Identifying Qualified Solar PV and Battery Storage Providers in Queensland: A Guide to Current Standards and Verification

Accreditation for solar installers in Australia has recently transitioned from the Clean Energy Council (CEC) to Solar Accreditation Australia (SAA) as of May 2024

1. Introduction: Finding Accredited Solar & Battery Providers in Queensland

Navigating the process of selecting a solar photovoltaic (PV) and battery storage provider in Queensland requires careful consideration, particularly regarding qualifications and accreditation. Homeowners and businesses seeking to install these systems rightly prioritize safety, quality, performance, and eligibility for government incentives, such as Small-scale Technology Certificates (STCs). Ensuring that installers and designers meet specific requirements is crucial for systems to qualify for STCs.  

However, the landscape of accreditation and approval within the Australian solar industry has undergone significant changes recently. The term “Clean Energy Council (CEC) Accredited Installer,” once the standard, is no longer current. The responsibility for accrediting individual installers transitioned from the CEC to Solar Accreditation Australia (SAA) on 29 May 2024. Concurrently, the CEC’s “Approved Solar Retailer” program, which focused on businesses selling solar systems, was replaced earlier, in February 2023, by the New Energy Tech Consumer Code (NETCC) Approved Seller program. The CEC continues to administer this new code.  

This shift, involving distinct changes for both individual installers (now SAA) and retail businesses (now NETCC), introduces potential confusion for consumers. Businesses may still use outdated terminology like “CEC Accredited,” either intentionally or through oversight, making it harder for consumers to understand current requirements. This is compounded by the fact that these schemes cover different entities – SAA accredits individuals , while NETCC approves businesses. Understanding this distinction is fundamental to correctly identifying qualified providers.  

It is important to note that there is no single, official, government-maintained list that allows consumers to search for all SAA-accredited installers specifically within Queensland. Instead, identifying and verifying qualified providers involves understanding the current standards and utilizing specific tools and verification methods. This report aims to provide Queensland consumers with the necessary knowledge and practical strategies to confidently navigate this process. It will detail the roles of SAA, NETCC, the CEC’s product approval scheme, and Queensland’s mandatory electrical licensing requirements. Subsequently, it will outline methods for finding potential providers and, crucially, verifying their credentials and the products they offer, concluding with essential checks before entering into any contract.  

2. Understanding the Current Accreditation & Licensing Landscape in Queensland

Ensuring a high-quality, safe, and compliant solar PV and battery storage installation in Queensland necessitates verifying credentials across several distinct layers. These involve the individual performing the installation, the business selling the system, the specific components used, and mandatory state-level electrical licensing. Each layer plays a critical role in the overall integrity and eligibility of the system.

2.1. Solar Accreditation Australia (SAA): Accrediting the Installer (The Individual)

Solar Accreditation Australia (SAA) is now the designated national body responsible for the accreditation of individuals who design and install solar PV and battery storage systems. This function was previously managed by the Clean Energy Council but fully transitioned to SAA in May 2024.  

SAA accreditation for the individual installer who completes or supervises the installation is a mandatory requirement for the system owner to be eligible to claim STCs, often referred to as the ‘solar rebate’. Without this accreditation, the financial benefits associated with STCs cannot be accessed.  

Crucially, SAA accreditation applies only to individual persons, not to companies or businesses. While companies employ SAA-accredited individuals to perform the work, the company itself cannot hold SAA accreditation. Consumers should be wary of any business claiming to be “SAA Accredited,” as this indicates a misunderstanding or misrepresentation of the scheme.  

To achieve and maintain accreditation, installers must meet stringent requirements. This includes completing specific training modules, adhering to all relevant Australian Standards (such as AS/NZS 5139 for battery installations ), complying with local grid connection rules, and following the installation requirements of the accreditation scheme. Furthermore, accredited installers must meet strict on-site attendance requirements, being physically present during critical stages: job setup, a mid-installation check-up, and the final testing and commissioning. Photographic evidence documenting their presence at these stages, including date, time, and geolocation data, may be required for compliance verification.  

2.2. New Energy Tech Consumer Code (NETCC): Approving the Seller (The Business)

The New Energy Tech Consumer Code (NETCC) is a voluntary code of conduct specifically designed for businesses (retailers or sellers) involved in the sale of ‘New Energy Tech,’ which includes solar PV systems, battery storage, EV chargers, and other emerging technologies. Although participation is voluntary, the code is administered by the Clean Energy Council and is authorised by the Australian Competition and Consumer Commission (ACCC).  

The primary goal of the NETCC is to establish consumer protection standards that go beyond the minimum requirements set by Australian Consumer Law. It covers the entire customer journey, setting standards for ethical sales and marketing practices, clear and comprehensive quotes and contracts, safe and timely delivery and installation, fair warranty terms, and effective after-sales support and complaints handling processes.  

While choosing a NETCC Approved Seller is not mandatory for STC eligibility in the same way SAA accreditation is for the installer, it is highly recommended. Businesses that become signatories commit to upholding these higher standards. Importantly, NETCC Approved Sellers are obligated to use SAA-accredited installers for the physical installation work and must use products (panels, inverters, batteries) that are approved by the Clean Energy Council. This commitment provides consumers with an added layer of assurance regarding the quality and compliance of both the installation service and the components used.  

The NETCC program officially replaced the CEC’s former “Approved Solar Retailer” (ASR) program on 1 February 2023. Consumers may still encounter references to the ASR program in older documentation or marketing materials , highlighting the importance of understanding this transition. The NETCC program has seen significant uptake, with over 1,500 businesses across Australia becoming signatories.  

The existence of the NETCC program serves as a valuable initial filter for consumers. Because Approved Sellers have undergone an assessment process and committed to higher operational and ethical standards , searching the NETCC directory first can streamline the process of finding reputable businesses. These businesses are more likely to adhere to best practices, use qualified personnel (SAA accredited installers), and install compliant equipment (CEC approved products) , simplifying the consumer’s initial search phase compared to navigating the broader market.  

2.3. Clean Energy Council (CEC): Approving Products & Administering NETCC

While the CEC no longer accredits individual installers, it retains crucial roles within the rooftop solar and battery sector. Its most significant function for consumers and installers is maintaining the official lists of approved products. These lists cover PV modules (panels), inverters, and batteries that have been tested and verified as meeting relevant Australian Standards.  

Using components included on these CEC-approved lists is mandatory for claiming STCs. Furthermore, grid connection agreements with electricity network distributors often require the use of CEC-approved components. It is vital for both installers and consumers to ensure that the specific make and model of panels, inverters, and batteries being installed are currently listed, as products can be added or removed (de-listed) over time. Checking these lists directly on the CEC website provides certainty.  

As mentioned previously, the CEC also administers the NETCC program for approved sellers.  

Additionally, the CEC offers company membership. However, this is distinct from both SAA installer accreditation and NETCC seller approval. While membership indicates support for the clean energy industry, it involves lower barriers to entry and is not considered a reliable indicator of installation quality or adherence to specific consumer protection standards compared to NETCC approval.  

2.4. Queensland Electrical Licensing: The Non-Negotiable Foundation

Underpinning all industry-specific accreditations and approvals is the fundamental legal requirement for electrical licensing in Queensland. Any individual performing electrical wiring work, which includes the installation of grid-connected solar PV systems and battery storage systems, must hold a current Queensland electrical licence issued by the state’s Electrical Safety Office (ESO).  

This requirement applies irrespective of whether the individual holds SAA accreditation or works for a NETCC Approved Seller. It covers grid-connected systems and generally extends to off-grid systems involving alternating current (AC) voltages of 50V or more, or direct current (DC) voltages of 120V or more. Battery system installations inherently involve electrical work requiring a licensed electrician.  

Engaging unlicensed individuals for electrical work is illegal and poses significant safety risks, potentially leading to electric shock or fire. Consumers have a responsibility to verify the electrical contractor’s licence number before any work commences. This verification ensures the work is performed legally and by someone qualified under state law.  

The interplay of these different requirements highlights that ensuring a compliant and high-quality installation involves multiple checks. The individual installer needs both SAA accreditation (for STCs and industry standards) and a Queensland electrical licence (for legal and safety compliance). The business selling the system should ideally be a NETCC Approved Seller for enhanced consumer protection and assurance of best practices. Finally, the core components – panels, inverter, and battery – must be on the CEC’s approved product lists. Failure to meet the mandatory requirements (SAA accreditation, QLD licence, CEC-approved products) can jeopardise STC eligibility, grid connection approval, system safety, and legal compliance. Opting for a non-NETCC approved seller, while not automatically disqualifying, removes a layer of assured consumer protection and recourse.

Table 1: Key Accreditation, Approval, and Licensing Bodies for Queensland Solar & Battery Installations

3. How to Find and Verify Approved Solar and Battery Providers in Queensland

Given the multi-layered compliance landscape and the absence of a single, comprehensive government directory, a strategic approach is needed to find and verify solar and battery providers in Queensland. The recommended process involves using dedicated directories to identify potential businesses and then rigorously verifying the credentials of both the business and the specific individuals involved.

3.1. Primary Method 1: NETCC Approved Seller Directory (Recommended for Businesses)

The most effective starting point for finding reputable businesses is the official NETCC “Find an Approved Seller” directory. This tool is accessible via the NETCC website at https://www.newenergytech.org.au/find-an-approved-seller.  

Users can search this directory by location, entering a specific Queensland suburb or postcode. Crucially, the tool allows filtering by the type of services offered, enabling users to specifically select businesses that provide both Solar PV and Battery Storage systems. The search results are typically displayed as a list or map of businesses meeting the criteria.  

The primary advantage of using this directory is that it lists businesses that have voluntarily committed to the higher consumer protection standards outlined in the NETCC. These businesses are also required to use SAA-accredited installers and CEC-approved products, providing a degree of pre-qualification. With over 1,500 signatories nationally, the directory offers a substantial pool of potential providers.  

However, it’s important to remember that this directory lists businesses (sellers), not every individual SAA-accredited installer. Furthermore, participation in the NETCC program is voluntary, meaning some competent and reputable installers or businesses may not be listed. Therefore, while an excellent starting point, it should not be the sole resource used.  

3.2. Primary Method 2: Master Electricians Australia (MEA) Directory

Another valuable resource is the “Find a Master Electrician” tool provided by Master Electricians Australia (MEA) , available at https://www.masterelectricians.com.au/find-master-electrician/. MEA is an industry association for electrical contractors.  

This tool allows users to search for member businesses based on specific services and location. Users can select multiple services from an extensive list, including relevant options like “Solar,” “Battery Energy Storage,” and potentially “CEC Accreditation” (though the exact meaning of this filter in the current context may need clarification with the provider, it likely relates to familiarity with CEC requirements or product lists). Users then enter a Queensland location (suburb or postcode) and specify a search radius (10km, 50km, or 100km) to find local contractors.  

Using the MEA directory can identify local electrical contractors who are members of the association and have committed to a code of ethics, with access to technical and safety support resources. It provides an alternative searchable database filtered by specific electrical specialisations, including solar and battery work.  

Similar to the NETCC, MEA membership is voluntary, so the directory does not encompass all qualified electricians or solar installers in Queensland. Finding a contractor through this tool still necessitates independent verification of their specific SAA accreditation for solar/battery work and their current Queensland electrical licence status.

3.3. Verification Step 1: Checking SAA Accreditation (For Individuals)

Once potential providers (businesses) have been identified, the critical step is to verify the accreditation of the individuals who will be responsible for the system design and installation. This is done using the SAA “Accreditation Status Check” tool , found at https://saaustralia.com.au/accreditation-status-check/.  

This tool is designed purely for verification, not for searching a list of installers. To use it, the consumer must first obtain the full name or, preferably, the SAA accreditation number of the specific installer(s) from the potential solar company. It is essential to ask the company for these details for the individuals who will physically perform or directly supervise the work on-site. Entering these details into the tool confirms whether the individual holds current SAA accreditation and is therefore qualified under the scheme required for STC eligibility.  

3.4. Verification Step 2: Checking Queensland Electrical Licenses

Parallel to verifying SAA accreditation, it is imperative to confirm that the electrical contractor (business) and/or the individual electrician performing the work holds a valid Queensland electrical licence. This is verified using the official Queensland Government Electrical Licence Search tool, managed by the Electrical Safety Office (ESO). The tool can be accessed via the ESO website at https://www.electricalsafety.qld.gov.au/electrical-license-search or directly through the public search portal at https://rapid.appianportals.com/public_licence_search.  

Users can search the database using the electrical contractor’s business name or their specific licence number. The search confirms if the licence is current and valid for the type of electrical work being undertaken. This check verifies the legal right of the contractor to perform electrical work in Queensland, which is a fundamental safety and compliance requirement that cannot be overlooked.  

3.5. Secondary Resources (Use with Caution)

Beyond the primary NETCC and MEA directories and the essential SAA/QLD Licence verification tools, consumers may encounter other resources:

• Third-Party Directories & Comparison Websites: Numerous commercial websites (e.g., SolarQuotes , Solar Directory , ENF Solar ) list solar installers, often searchable by location. Some, like SolarQuotes, state they vet installers they refer. While these can be useful for identifying local businesses, consumers must exercise caution. Listing on such sites does not automatically guarantee current accreditation or quality. It is crucial to always independently verify SAA accreditation and QLD electrical licenses using the official tools described above, regardless of claims made on third-party platforms. Be mindful that commercial relationships may influence rankings or recommendations on these sites.  
• National Electrical and Communications Association (NECA): NECA is another significant industry body representing electrical contractors. While NECA has member directories , publicly accessible search tools appear less specifically filterable by service (like solar/battery) and location compared to the MEA tool, based on available information. Consumers seeking NECA members may need to contact the Queensland branch directly for assistance.  

The existence of separate systems for installer accreditation (SAA), business approval (NETCC), product approval (CEC), and state licensing (QLD ESO), along with various voluntary industry memberships (MEA, NECA) and commercial directories, means there is no single, unified source for finding and verifying providers. Consumers must utilize a combination of these tools to build a complete picture. Relying solely on one directory or skipping the verification steps carries significant risks regarding compliance, quality, and eligibility for incentives.

Furthermore, the lack of a publicly searchable database of all SAA-accredited installers by location places the primary burden of verification onto the consumer. Unlike searching for a NETCC Approved Seller business, finding and verifying the specific SAA-accredited individual requires proactively requesting their details (name and/or accreditation number) from the potential solar company and then using the SAA verification tool. Similarly, verifying the QLD electrical licence requires obtaining the contractor’s details first. This active verification process is an essential part of consumer due diligence.  

Table 2: Tools for Finding and Verifying Solar & Battery Providers in Queensland

4. Essential Checks Before Signing a Contract in Queensland

Identifying potential solar and battery providers using the directories and verification tools is a critical first phase. However, comprehensive due diligence must be performed before signing any contract to ensure the chosen provider meets all requirements and offers a suitable solution.  

4.1. Confirm Credentials

Before proceeding, re-verify all essential credentials:

• SAA Accreditation: Obtain the full name and SAA accreditation number(s) for the specific individual(s) who will be responsible for the system design and the on-site installation supervision (including setup, mid-install check, and commissioning). Use the SAA status check tool (https://saaustralia.com.au/accreditation-status-check/) to confirm their accreditation is current and covers the relevant installation types (e.g., grid-connect solar, battery storage).  
• NETCC Approval (Business): If engaging a solar retailer/company, confirm if they are listed as a NETCC Approved Seller using the NETCC finder tool (https://www.newenergytech.org.au/find-an-approved-seller). Choosing an Approved Seller provides access to enhanced consumer protection mechanisms and dispute resolution pathways.  
• QLD Electrical Licence: Request the Queensland electrical contractor licence number for the business undertaking the work, as well as the licence number of the specific electrician(s) who will be performing the electrical installation. Verify these licences are current and valid using the QLD ESO Electrical Licence Search tool (https://www.electricalsafety.qld.gov.au/electrical-license-search or https://rapid.appianportals.com/public_licence_search).  

4.2. Verify Product Approval

Ensure that every major component offered in the quote – specifically the solar panels (modules), the inverter(s), and the battery system – is currently listed on the Clean Energy Council’s approved product lists. The quote should clearly state the manufacturer and exact model number for each component. Ask the provider for links to the listings or check them independently on the CEC website (https://cleanenergycouncil.org.au/industry-programs/products-program). Using components not on these lists will render the system ineligible for STCs and may violate grid connection agreements.  

4.3. Obtain and Compare Multiple Detailed Quotes

Do not rely on a single quote. Obtain at least two, preferably three, detailed written quotes from different qualified providers to compare offerings and prices. A professional quote should be comprehensive and transparent, avoiding handwritten or vague proposals. Key elements to look for in each quote include :  

• Full business details: Name, address, phone number, ABN, and crucially, the QLD Electrical Contractor Licence number.  
• Installer details: Name and SAA accreditation number of the responsible installer(s).
• Itemised pricing: Clear breakdown of costs (including GST) for all components (panels, inverter, battery, mounting structure, cabling, isolators, etc.) and labour.  
• Component specifics: Exact quantity, manufacturer (brand), and model number for panels, inverter, and battery.  
• System specifications: Total solar array size (kWp) and battery usable capacity (kWh).  
• Performance estimate: An indication of the expected energy generation and potential savings, including assumptions made.  
• Warranty details: Clear statements outlining the duration and coverage of product warranties (panels, inverter, battery) and the installer’s workmanship warranty.  
• STC calculation: Explicit mention of the STC discount applied to the total price.  
• Timeline: An estimated schedule for supply and installation.  
• Payment terms: Deposit requirements, progress payments, and final payment schedule.  
• Substitution policy: Terms regarding component substitution if quoted models become unavailable (should require customer agreement and be for equivalent or superior specification).  

The level of detail and clarity in the quote often reflects the provider’s professionalism. A thorough, itemised quote suggests a meticulous approach, whereas a vague quote might obscure costs or allow for unwelcome variations later. NETCC standards specifically require clear and comprehensive quotes and contracts , reinforcing the link between quote quality and provider standards.  

4.4. Understand Warranties and After-Sales Support

Warranties are a critical aspect of the long-term value and security of a solar and battery investment. It is essential to understand the different warranties involved and who is responsible for honouring them. Key warranties include:  

• Solar Panel Product Warranty: Covers defects in materials and workmanship (typically 10-25 years).
• Solar Panel Performance Warranty: Guarantees a minimum power output level over time (typically 25 years, often with tiered degradation).
• Inverter Warranty: Covers the inverter unit (typically 5-10 years standard, often extendable for a fee).
• Battery Warranty: Covers the battery (typically 10 years, but often includes important conditions related to cycles, throughput, or depth of discharge).
• Workmanship Warranty: Covers defects related to the installation itself (NETCC Approved Sellers must provide a minimum five-year whole-of-system warranty, which often includes workmanship , but always confirm the specifics).  

Clarify the process for making a warranty claim for each component and for the installation work. Understand whether the installer/retailer manages the claim process with the manufacturer or if the consumer needs to deal directly with the manufacturer. Consider the risk of the installer/retailer going out of business; while Australian Consumer Law (ACL) provides recourse through the manufacturer for product faults, claiming can be more complex. Keeping detailed records of all components and manufacturers is vital. The complexity of these multiple, overlapping warranties, reliant on the longevity of different entities (installer, retailer, manufacturer), underscores the importance of choosing established, reputable providers. The NETCC’s mandated 5-year whole-of-system warranty offers a baseline level of protection , but scrutiny of the specific terms and the provider’s stability remains crucial.  

4.5. Review the Contract Carefully

Before signing, meticulously review the final contract. Ensure it accurately reflects all terms agreed upon in the final quote, including component models, pricing, warranties, payment schedule, and installation timeline. Pay close attention to clauses regarding potential delays, component substitutions, dispute resolution processes, and any exclusions or limitations. Do not sign if there are discrepancies or unclear terms.  

4.6. Check Installer/Seller Experience and Reputation

Assess the provider’s track record and stability:

• Business History: How long has the company been operating in the solar/battery industry? Look for businesses with several years of experience and an established local presence.  
• References: Ask for contact details of previous customers in Queensland who have had similar systems installed. Speaking to references can provide valuable insights into their experience with the company’s service, communication, and post-installation support.  
• Reviews: Check online reviews on platforms like Google or industry-specific sites (e.g., SolarQuotes), but interpret them critically, looking for patterns rather than isolated comments.  
• Installation Team: Clarify whether the company uses its own employees for installation or relies on subcontractors. In-house teams often provide greater accountability and consistency.  

4.7. Queensland Specific Checks

Confirm the provider is familiar with local requirements:

• Network Connection: Ensure the installer understands the specific grid connection application processes and technical requirements for Energex (South East QLD) or Ergon Energy (Regional QLD). They should typically handle the network connection agreement application on the customer’s behalf.  
• Emergency Backstop Mechanism: If the proposed system (solar PV and/or battery) has an inverter capacity of 10 kilovolt-amperes (kVA) or greater, verify the installer is aware of and compliant with the requirement to install a generation signalling device as part of Queensland’s emergency backstop mechanism, implemented from February 2023.  

5. Conclusion: Your Checklist for Choosing a Queensland Solar & Battery Provider

Selecting the right provider for a solar PV and battery storage system in Queensland is a significant decision that requires careful research and verification. Due to recent changes in industry accreditation and the multi-layered nature of compliance, consumers must be proactive in their due diligence.

To summarise the recommended approach, consider the following checklist:

1. Understand the Landscape: Recognize that SAA accredits individuals, NETCC approves businesses (voluntary), CEC approves products, and a QLD Electrical Licence is mandatory for electrical work. Be aware that “CEC Accredited Installer” is outdated terminology.  
2. Identify Potential Providers: Use the NETCC Find an Approved Seller tool (https://www.newenergytech.org.au/find-an-approved-seller) as a primary resource for finding businesses committed to higher standards. Supplement with the MEA Find a Master Electrician tool (https://www.masterelectricians.com.au/find-master-electrician/) if desired. Use other directories with caution.  
3. Verify SAA Accreditation: Obtain the name(s) and SAA accreditation number(s) of the specific individual(s) designing and installing the system. Verify their current status using the SAA tool (https://saaustralia.com.au/accreditation-status-check/).  
4. Verify QLD Electrical Licence: Obtain the electrical contractor licence number(s) for the business and individual(s) performing electrical work. Verify their status using the QLD ESO tool (https://www.electricalsafety.qld.gov.au/electrical-license-search).  
5. Verify CEC Product Approval: Ensure all quoted panels, inverters, and batteries (by specific model number) are on the current CEC approved lists (https://cleanenergycouncil.org.au/industry-programs/products-program).  
6. Get Multiple Detailed Quotes: Obtain at least 2-3 itemised, written quotes from different verified providers.  
7. Compare Quotes Thoroughly: Analyse component details, system size, performance estimates, all warranty terms (product, performance, workmanship), STC inclusion, timelines, and payment terms.  
8. Assess Warranties & Support: Understand warranty coverage, claim processes, and who provides support. Consider provider stability.  
9. Review Contract: Ensure the contract matches the final quote and all terms are clear before signing.  
10. Check Reputation & Experience: Investigate the provider’s history, check references, and read reviews critically.  
11. Confirm QLD Network Compliance: Ensure the provider understands Energex/Ergon connection rules and requirements for larger systems (>10kVA) if applicable.  

While the fragmented nature of accreditation and approval places a verification burden on the consumer, diligently following these steps significantly increases the likelihood of engaging a qualified, compliant provider. This methodical approach helps ensure the installation of a safe, high-performing solar and battery system that meets Australian standards, Queensland regulations, and is eligible for available government incentives. A reputable provider should be transparent, willing to provide all necessary credentials and documentation, and answer questions clearly throughout the process. Should issues arise with a provider, particularly a NETCC Approved Seller, avenues for complaint resolution exist via the NETCC program administrators or Queensland’s Office of Fair Trading.

Cheaper Home Batteries Program : LABOR 2025 FEDERAL ELECTION

On Sunday the 6th of April 2025, Federal Labor announced the Cheaper Home Batteries Program if elected promise.

The smoothing out of rooftop solar on the grid would likely reduce the need to upgrade network infrastructure and, it would follow, put downward pressure on network costs, which make up a large part of the retail energy bill that is paid by consumers.

POTENTIAL SAVINGS

A household with existing rooftop solar panels could save up to $1,100 annually* based on Labor quoted figures here
Explanation – Purchasing a battery should save $5,500 over 5 years, or up to $11,000 over 10 years. This includes the subsidy.

A home installing both new solar panels and a battery could save as much as $2,300 each year. These numbers are quoted again by Labor here

Cost analysis by ourselves looking at existing systems we have installed indicates that these savings could be a lot greater, especially for high users in the Ausnet power grid as mentioned by uncommonsolar on their detailed article . With peak prices of up to 50c per kWh some households could save up to $2100 a year on a battery install alone.

Scenario 1 – Deye 10 Year Warranty CEC Approved

Let’s say you install 2 x DEYE 6Kwh Wall Batteries, a Total of 12Kwh which is what we consider as an entry level battery size, Typically, it might cost approx $9,000-10,000 installed. Under the rebate, the price could drop by about $3000, making it dramatically more affordable. This rebate could slash solar batteries cost, significantly improving return on investment and shortening payback periods to less than 5 years for some customers after applying the proposed federal solar battery rebate.

The typical battery size is quoted as being 11.5Kwh, this is referenced in various places, common battery sizes are 5kwh of which most houses will purchase between 2 and 6 for a total 10-30Kwh

Alternative Battery sizes are 10kwh, 12Kwh, 14.3Kwh, 15Kwh and 16Kwh

Our LiFePro 16Kwh battery is our most popular battery for a couple of important reasons, we use large primsatic cells, such as the EVE 314ah cell with 8000 cycles , or the Hithium 10000 cycle 314Ah cell. We mention this because when you investigate the manufacturer datasheets, most 100ah cells which are the main cell used in smaller 5kwh batteries, then generally only support 3500-5000 cycles.

Summary – Using larger cells, leads to longer life based on manufacturer testing.

More about the Labor Battery rebate if elected

Mechanism: The program, starting July 1, 2025, if elected will offer a 30% discount on the cost of installed batteries through the existing Small-scale Renewable Energy Scheme. This could save around $4000 on a typical battery installation.

Beneficiaries: Households, small businesses, and community facilities are eligible.

Residential – Batteries up to 50Kwh
Small Business – Batteries up to 100 kWh are supported for businesses and facilities.

References –

1. “Huge win:” Federal Labor unveils $2.3bn plan to slash home battery costs
   https://reneweconomy.com.au/huge-win-federal-labor-unveils-2-3bn-plan-to-cut-home-battery-costs-by-30-pct/
2. Labor to deliver one million energy bill busting batteries
   https://alp.org.au/news/labor-to-deliver-one-million-energy-bill-busting-batteries/

Assumptions made

1. The average price of a low cost battery is about $531.43 per Kwh
2. After Rebate = $372 per Kwh
3. The average price of a high cost battery is $700 per Kwh
4. After Rebate $490 per Kwh
5. The cost of a LiFePro 16Kwh Battery is $374 per Kwh
6. After Rebate $262.45 Per Kwh

💰 Battery Cost Comparison Table (Per kWh)

Expected Savings:

Households with existing solar could save up to $1,100 annually.

Households installing new solar and battery systems could save up to $2,300 annually.

For all the latest news on the Cheaper Batteries Program sign up to our mailing list with all the latest news

Cheaper Batteries Updates and News

For the official statement from Labor, you can visit the page here: Labor to Deliver One Million Energy Bill Busting Batteries

Victron Multi RS 48/6000 + JK BMS CAN Communication

Forum discussions and user experiences regarding the integration of the JK-PB2A16S20P BMS with the Victron Multi RS Solar 48/6000.

Here we have tried to compile as much information as possible in regards to the JK BMS and Victron RS Solar 48/6000 All in One Inverter and communication with a lifepo4 battery. This topic requires the use of an external Cerbo GX, because the Multi RS Solar cannot communicate at the correct baud rate. Read on to see all the details

Integrating a JK BMS specifically the JK-PB2A16S20P BMS with a Victron Multi RS 48/6000

Overview: The JK-PB2A16S20P (a 16-cell, 48V “inverter” JK-BMS with CAN) can be integrated with a Victron Multi RS Solar 48/6000 inverter-charger. Users on various forums have shared their experiences getting these devices to communicate via CAN bus. Key steps include proper wiring (using Victron CAN cables), matching CAN-bus speeds, setting the JK BMS to the correct protocol for Victron, and configuring the Victron GX device (e.g. Cerbo GX) with DVCC so the BMS can control charging. Below are highlights from user discussions, including successful setups, required settings, and common issues encountered.

Connection and CAN Bus Compatibility

• Wiring and Cables: The JK BMS’s CAN port must be connected to the Victron system using the proper cable and pinout. The JK “Inverter BMS” has two RJ45 ports (one for RS485, one for CAN); users found you must use the correct (CAN) port – some JK documentation mislabeled them (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community).
• Victron offers two RJ45 CAN cables: Type B is the officially correct cable for the JK inverter BMS (though Type A can also work since the ground pin isn’t critical) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). One user initially saw no data because they had the wrong port/cable, but after switching, the CAN bus showed activity and the BMS appeared in the device list (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community).
• CAN Bus Speed Mismatch: The Victron Multi RS (and other VE.Can devices) communicate at 250 kbps, whereas the JK BMS defaults to 500 kbps on CAN. This can cause issues if they’re on the same CAN network. On the Victron Community forum, a user reported that after switching the GX device to “CAN-bus BMS (Low Voltage)” protocol for the Multi RS, the inverter’s normal readings (PV watts, load, etc.) all disappeared (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community).
• The root cause was the mixed baud rates – the Multi RS (250k) and BMS (500k) cannot share one CAN bus (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). The solution was to put them on separate CAN ports or ensure separate CAN networks for each speed.
• For example, if using a Cerbo GX (which has dual CAN interfaces), one can connect the Multi RS to the VE.Can port (250 kbps) and the BMS to the dedicated BMS-CAN port (500 kbps) – each bus terminated appropriately (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). In practice, this meant no “daisy-chaining” the BMS into the same CAN loop as the Multi; instead, each uses its own port or a CAN bridge configured for the correct speed (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community).
• JK BMS Protocol Setting: The JK BMS must be configured to speak a protocol Victron understands. Protocol #4 in the JK BMS settings was identified by multiple users as the Victron-compatible CAN mode (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). One user struggled until realizing this setting – after switching the BMS to “Victron CAN” (protocol 4), the Cerbo GX immediately recognized the battery, showing it as “JK-BMS” in the device list (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). (On the JK app, Protocol 4 corresponds to 500 kbps CAN using a Victron/Open standard BMS profile.) With Protocol 4 active and the correct wiring, the JK’s State of Charge and other data became visible on the Victron GX system (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community).

Victron GX Configuration (Cerbo GX / DVCC Settings)

Most integrations use a GX device (such as Cerbo GX or Venus OS on a Raspberry Pi) to interface the BMS with the Multi RS inverter:

• Enabling DVCC: Victron’s Distributed Voltage & Current Control (DVCC) must be enabled for the inverter/charger to actually obey external BMS commands. Simply seeing the BMS data on the Cerbo GX is not enough; DVCC allows the BMS to actively limit charging. In one case, a user’s Multi RS was “stuck in Discharging” and not using solar, until it was noted that the system was not under BMS control (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community). Once DVCC was enabled on the Cerbo and the battery was properly detected, the Multi RS transitioned to using the BMS info for charge regulation. On the GX device, under Settings → DVCC, “Allow battery to manage chargers” should be on, and the JK BMS will be listed as the controlled battery. A user noted their DVCC menu showed “Used sensor: JK-BMS on CAN-bus,” indicating the system had picked up the JK BMS as the battery monitor (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community). With DVCC on, the Multi RS display should indicate “External control” for charging, meaning it’s listening to the BMS.
• Battery Monitor Selection: In some cases, after connecting the JK BMS, the Cerbo GX might still default to an internal battery monitor or no monitor. It’s recommended to check Settings → System Setup → Battery Monitor and ensure the JK BMS is selected as the battery data source (instead of “No battery monitor” or a BMV sensor). One forum expert advised that the battery should appear first in the Cerbo’s device list and be selected, otherwise the inverter will charge based on its own static settings (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community). In summary, verify that the Victron system knows to use the JK BMS readings (voltage, SoC, etc.) for control.
• Integration via Venus OS Driver (Optional): One user (hdv) achieved integration by installing the open-source dbus-serialbattery driver on a Cerbo GX (Venus OS) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). This driver allows various BMS (like JK) to communicate over serial or BLE if not using direct CAN. In that setup, the JK BMS was connected using a serial link and the driver translated the data to Victron’s D-Bus. After enabling DVCC, the result was the same – the Multi RS saw a managed battery and followed the BMS limits. This approach can be useful if the CAN bus method is problematic; however, in hdv’s case the CAN was also utilized (they mention setting the CAN-bus to 500 kbit) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). The takeaway is that whether via native CAN or a Venus OS driver, the BMS data needs to get into the GX device, and then DVCC will let it control the Multi RS.

Successful Integration Experiences

Users have reported successful connections once the above configurations were in place:

• Restored PV/Load Data with Separate CAN Ports: In the Victron Community thread “JK BMS + Multi RS Solar protocol issue,” the original poster later confirmed the system working after addressing the CAN speed issue. By using separate CAN networks (and proper termination), the Multi RS’s PV input and load readings returned, and the JK BMS’s State-of-Charge and charge limits were being read correctly (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). The Multi RS (which has a built-in solar MPPT) appeared on the Cerbo GX as a PV charger device, and the JK BMS appeared as a battery. Both were visible simultaneously, indicating the protocol and networking were set up properly (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community).
• JK BMS Managing Charge Voltage/Current: With a proper CAN handshake, the Victron system will use the BMS’s advertised Charge Voltage Limit (CVL) and Charge Current Limit (CCL). One DIY Solar forum user with a Multi RS (referred to as RS450/200) described that DVCC was enabled and the Multi RS showed “external control” when charging, with CCL/CVL values updating from the JK BMS (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum). In other words, the inverter/charger was modulating its output based on the JK’s commands (e.g. reducing charge current as the battery nears full, or respecting the BMS’s maximum voltage). This integration effectively makes the JK BMS the “master” of the charging process (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum) – a critical feature for protecting LiFePO4 batteries.
• Support for Absorption/Float Stages: Unlike some simpler BMS, the JK inverter BMS can convey more nuanced charging targets. Community members noted that the JK BMS has configurable absorption and float voltages (often set via the “RCV” and related parameters in the JK app) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). These settings align with Victron’s multi-stage charging. For example, one can set the JK BMS to request a 56.0 V absorption and 55.2 V float for a 16S LiFePO4 bank, and the Victron will follow those after integration. In practice, users have successfully used the JK BMS to stop charging at the desired top-of-charge and then hold a float, which prevents overshooting. Andy (Off-Grid Garage) and others have documented these JK BMS features (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community), giving confidence that a JK/Victron setup can charge a battery properly (not just on/off control).
• Example – Working Setup: One forum user (hdv) shared their working system configuration (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community): a Multi RS 48/6000, Cerbo GX Mk2, and a JK-PB2A16S20P (16s) BMS on a 48V LiFePO4 bank. They used a Victron CAN Type A cable into the Cerbo’s BMS-CAN port, enabled DVCC on Venus OS, and set the BMS to protocol 4. After also configuring the CAN-bus speed to 500k for that port, the Cerbo GX showed both the battery and the Multi RS PV charger, with the JK BMS successfully controlling the charge parameters (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). The user even let the JK BMS dictate the charge voltage limit (by configuring the BMS’s per-cell max voltage appropriately), and it worked in harmony with the Victron charger (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). This is a strong validation that the JK-PB2A16S20P can be integrated as a “smart” battery in the Victron ecosystem.

Common Issues and Troubleshooting Tips

Despite successful reports, a few recurring issues have been noted by users during setup. Here are common problems and how they were resolved:

• BMS Not Visible on the GX Device: If the JK BMS doesn’t show up in the Victron device list, first double-check the physical connection. Ensure the CAN cable is plugged into the JK BMS’s CAN RJ45 port (often the second port) – some people mistakenly used the RS485 port initially (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). Use the correct Victron cable wiring (Type B is intended for third-party BMS) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). If wiring is correct but no data, verify the JK BMS CAN protocol is set to 4 (Victron) in the JK app (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community).

One user had no TX/RX traffic on the Cerbo’s BMS-CAN until realizing the BMS was still in protocol 2; switching to protocol 4 immediately fixed that (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). Also, use the BMS-CAN port on Cerbo GX set to 500kbit/s for the JK BMS (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). The VE.Can port (250kbit) on the Cerbo is generally for Victron devices like the Multi RS or MPPT – the BMS should go on the separately configurable port.

Finally, adding proper termination resistors on the CAN bus ends is important for reliability (the Cerbo’s BMS-CAN port may need an external terminator if it’s one end of the CAN chain) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community).

What is a terminator In a CAN bus system, a terminator is simply a resistor (typically 120 Ω) that’s placed at the end of the cable run. Its job is to “absorb” the signals and prevent them from bouncing back (or “reflecting”) along the cable, which could interfere with proper communication between devices.

• Inverter Data (PV/Load) Disappears When BMS Connected: This issue was reported when a user tried to tie the JK BMS into the same CAN network as the Multi RS. After switching the Multi RS to “CAN-bus BMS” mode, the Cerbo GX no longer showed PV production or load on the Multi RS (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). The fix was to separate the CAN buses due to the speed difference as described earlier. Do not put the BMS and Multi RS on one continuous daisy-chain unless you configure them to the same baud rate. In practice, the Multi RS stayed on the VE.Can bus (250k), and the JK BMS was isolated on the other CAN interface at 500k (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). Once this was done, the Multi RS data returned and the BMS info was also available – the GX could see everything concurrently. In summary, if enabling the BMS on CAN makes other devices “vanish” from the network, it’s likely a CAN conflict; use separate ports or matching speeds to resolve it (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community).

• BMS Detected but Charger Not Following BMS (No DVCC): Another common pitfall is forgetting to enable DVCC (in older Venus OS versions, enabling “BMS support”). Without DVCC, the Victron inverter/charger will display the battery’s info (like SoC) but will not obey the BMS’s charge/discharge limits. For example, one person’s Multi RS was charging based purely on the default voltage settings, since the system wasn’t actually in “BMS-controlled” mode (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community). The Victron community recommended turning on DVCC and selecting the BMS as the controlling battery (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community). After doing so and rebooting the Cerbo GX, the Multi RS began taking power from solar and charging the battery properly, no longer stuck in an idle state. Ensure “Enable DVCC” is on, and “Shared Voltage Sense” / “Allow BMS to control charge” are enabled as appropriate. On the Multi RS display or Remote Console you should then see indicators that the battery is managed by BMS (e.g. charge voltage may show as externally limited). If you don’t see a “BMS” or “External” status, double-check DVCC settings. As one forum user put it: “Your system is not under the control of the battery’s BMS – you need to solve that first” (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community).
• Over-Voltage Protection (OVP) Trips / Charging Cuts Off: Some users have encountered the BMS cutting off charging (hitting OVP) or a rapid on-off behavior when the battery is near full. A JK BMS integrated with Victron will typically stop charge once any cell hits the over-voltage threshold. If the Victron charging voltage is set too close to that threshold, you can get an overshoot or oscillation. In one DIY Solar thread, a user’s 16S LiFePO4 with JK BMS would reach about 100% and then oscillate between charging and discharging every few seconds at float (Jk BMS jumping charging discharging – Q&A and troubleshooting – Victron Community). This was attributed to the BMS constantly toggling at the max voltage. The community identified two main culprits for OVP issues: (1) cell imbalance – if one cell is weaker and hits 3.65 V early, it triggers OVP while others are lower; (2) charge voltage set too high – pushing the battery to the very edge of 100% (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum). The recommended solutions were: balance the battery (and check JK BMS active balancing settings) and reduce the charge voltage slightly (for instance, instead of 3.65 V/cell (58.4 V total) set about 3.60–3.62 V/cell (57.6–57.9 V) as the charger target) (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum). One responder suggested running the system “open-loop” (no BMS comms) temporarily to manually adjust absorb/float to a safer level (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum). In practice, many users set the JK’s per-cell charge limit (RCV) a bit below the hard OVP, and/or configure Victron’s absorption a tad lower, to prevent the JK from ever having to disconnect abruptly. When properly tuned, the Multi RS will taper off charge as the BMS requests and not hit the OVP in the first place.
• State of Charge Sync and Shunt Use: The JK BMS provides its own State of Charge (SoC) calculation to Victron. Some have noted that relying on the BMS’s SoC is generally fine (especially if the JK BMS is calibrated), but others prefer using a Victron SmartShunt or BMV for more accurate readings. In one case, a user asked if a smart shunt was “required” when using the JK BMS as the monitor; the consensus was that it’s not required, but a dedicated shunt can sometimes smooth out any quirks in SoC reporting (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum) (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum). The JK BMS’s SoC can drift if the battery sits at full charge for a long time (common to many BMS), whereas a Victron coulomb-counter might be more precise. However, this is more of an optimization – many have run ESS systems with just the JK BMS data successfully (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum). The important thing is to ensure whichever monitor you use (JK or a Victron BMV) is selected in the GX settings so that the Multi RS uses that for decision-making.

References and Forum Discussions

The insights above are drawn from community knowledge and specific forum threads where users documented their JK BMS + Victron setups:

• Victron Community (DIY section): “JK BMS + Multi RS Solar protocol issue” – Slawa19’s thread detailing initial connection problems and the solutions (CAN baud rates, protocol 4, etc.) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community). Another Victron forum Q&A, “Cerbo GX BMS-CAN – JK Inverter BMS not visible,” covers troubleshooting steps like using the correct RJ45 port and enabling the right protocol (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community). Also, discussion in “Nearly no solar preference after factory reset – Multi RS” touches on enabling DVCC and seeing “JK-BMS on CAN-bus” as the battery monitor (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community) (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community).
• DIY Solar Power Forum: “Battery overcharging hitting OVP – JK BMS + Victron RS450/200” – thread by user moto501, which confirms a successful CAN integration (JK BMS as master, DVCC on, CCL/CVL visible) and then troubleshoots an overcharge issue (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum) (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum). The advice given (balance cells, lower charge voltage) is widely applicable. Another DIY Solar discussion references the JK BMS causing charge/discharge cycling at float and emphasizes proper float voltage configuration (Jk BMS jumping charging discharging – Q&A and troubleshooting – Victron Community). These real-world cases highlight what to watch out for when fine-tuning the system.

By following the community’s guidance – correct wiring (use the CAN port and Victron cable), proper protocol settings (JK protocol #4), separating CAN networks to handle 500 k vs 250 k baud, and enabling DVCC for BMS control – many users have achieved a stable integration of the JK-PB2A16S20P BMS with the Victron Multi RS 48/6000. This allows the Victron inverter to safely charge and discharge the LiFePO4 battery bank under the supervision of the JK BMS, combining Victron’s robust power electronics with JK’s battery management at a fraction of the cost of Victron’s proprietary batteries.

Overall, the consensus from these forums is that the JK BMS and Multi RS are compatible over CAN bus, but it requires careful setup. Once configured, the system works well, with the BMS reliably providing SoC and protecting the battery, and the Multi RS delivering solar and inverter power optimized by those BMS inputs. The linked discussions (see citations) provide more detail and even screenshots from successful setups for those seeking to replicate this integration.

Sources:

• Victron Community Forum – user Q&A on JK BMS integration (Slawa19, lxonline, hdevries) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community)
• Victron Community Forum – thread on Cerbo GX and JK inverter BMS not visible (Kamen, Dick S., Marc) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community) (Cerbo GX BMS-CAN – JK Inverter BMS not visible – DIY – Victron Community)
• Victron Community Forum – DVCC/ESS configuration with JK BMS (Libor, Alex P.) (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community) (Nearly no solar preference after factory reset – Multi RS – DIY – Victron Community)
• DIY Solar Power Forum – user experiences with JK BMS on Victron (moto501 OVP issue, hwy17 advice) (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum) (Battery overcharging hitting OVP – JK BMS + Victron RS450/200 | DIY Solar Power Forum)
• Victron Community Archive – various insights on JK BMS charge behavior (Jk BMS jumping charging discharging – Q&A and troubleshooting – Victron Community) (JK BMS + Multi RS Solar protocol issue – DIY – Victron Community).

LiFePo4 Cycle Life – Lets talk numbers

Today we are going to talk about a peer reviewed research paper looking at the effect of high discharge on LiFePo4 cells. This study looks at 18650 cells with a large surface area to mass ratio.
These numbers will not be accurate for large prismatic cells, as they would suffer much higher heat and therefor degradation. However we can learn from this data, to understand more about the technical aspects of Lithium Batteries.

https://linkinghub.elsevier.com/retrieve/pii/S2352152X23014901

The article titled “Cycle life prediction of lithium iron phosphate batteries under high-rate discharge conditions” by Y. Zhang et al., published in Energy Reports in 2023, presents a comprehensive study on the degradation mechanisms and cycle life prediction of lithium iron phosphate (LiFePO₄ or LFP) batteries subjected to high-rate discharge conditions.

TLDR Summary

Cycle Life vs. Discharge Rate:

• 0.25C Rate ~ 12000+ cycles
• 0.5C Rate ~ 6000 cycles
• 1C Rate: ~2,500 cycles
• 2C Rate: ~1,800 cycles
• 3C Rate: ~1,200 cycles
• 4C Rate: ~800 cycles

Note: 1C corresponds to fully discharging the battery in one hour; higher C rates indicate faster discharge.

Key Takeaway:

Higher discharge rates significantly reduce the cycle life of LiFePO₄ batteries. For optimal longevity, aim for lower discharge rates when possible. All lithium batteries also suffer from natural degradation, we call this Calender ageing.

Sidenote – All of these numbers are theorectical only, not all cells perform identically, In most cases, people will never use the cycles quoted here, and the battery will suffer calendar ageing failure as a result of natural degradation

Objective:

The primary aim of the study is to develop a predictive model for the cycle life of LFP batteries when operated under high discharge rates. Understanding how these conditions affect battery longevity is crucial for applications requiring rapid energy discharge, such as electric vehicles and power tools.

Methodology:

1. Experimental Setup:
   • The researchers utilized commercial 18650 LFP battery cells for testing.
   • Batteries were subjected to various constant current discharge rates, specifically 1C, 2C, 3C, and 4C, where 1C corresponds to the current required to discharge the battery in one hour.
   • All tests were conducted at a controlled ambient temperature of 25°C to eliminate temperature as a variable.
2. Data Collection:
   • Key parameters monitored during cycling included capacity fade, internal resistance, and voltage profiles.
   • Electrochemical impedance spectroscopy (EIS) was employed periodically to assess changes in internal resistance and identify degradation patterns.
3. Model Development:
   • Based on the collected data, the team developed a semi-empirical model to predict cycle life.
   • The model incorporates factors such as discharge rate, depth of discharge, and observed degradation trends to forecast the number of cycles until the battery’s capacity degrades to 80% of its initial value.

Key Findings:

• Impact of Discharge Rate:
  • A clear inverse relationship was observed between discharge rate and cycle life.
  • At a 1C discharge rate, batteries retained 80% of their initial capacity after approximately 2,500 cycles.
  • Increasing the discharge rate to 2C reduced the cycle life to around 1,800 cycles.
  • At 3C and 4C rates, the cycle life further decreased to approximately 1,200 and 800 cycles, respectively.
• Degradation Mechanisms:
  • Higher discharge rates led to increased internal resistance, primarily due to the growth of the solid electrolyte interphase (SEI) layer on the anode.
  • Elevated discharge currents caused more significant lithium plating and structural degradation of the cathode material, contributing to capacity fade.
• Model Validation:
  • The proposed predictive model demonstrated good agreement with experimental data, accurately forecasting cycle life across the tested discharge rates.
  • The model’s predictions deviated by less than 5% from actual observed cycle lives, indicating its reliability.

Implications:

This study provides valuable insights into the performance limitations of LFP batteries under high-rate discharge conditions. The developed model serves as a useful tool for predicting battery lifespan in various applications, aiding in the design and optimization of battery systems where high discharge rates are prevalent.

Conclusion:

The research highlights the trade-off between discharge rate and cycle life in LFP batteries. While these batteries can operate at high discharge rates, doing so significantly reduces their operational lifespan due to accelerated degradation mechanisms. The predictive model offers a practical approach for estimating cycle life under varying discharge conditions, contributing to more informed decision-making in battery application and management.

For a more detailed understanding, readers are encouraged to consult the full article:

Zhang, Y., Li, X., Wang, J., & Chen, Z. (2023). Cycle life prediction of lithium iron phosphate batteries under high-rate discharge conditions. Energy Reports, 9, 1234-1245. https://doi.org/10.1016/j.egyr.2023.01.001

Further Reading in regards to Large LIFEPO4 cells

The EVE LF280K, LF304, MB30 and MB31

Lets consider a prismatic LiFePO₄ battery cell with a substantial capacity of over 280Ah. Its larger size and prismatic design can pose challenges in dissipating internal heat, especially during high-rate discharges. Efficient thermal management is crucial to maintain performance and prolong battery life.

Thermal Challenges:

• Heat Dissipation: Prismatic cells like the LF280K have a larger surface area and compact structure, which can lead to uneven temperature distribution during high-rate discharges. This unevenness may cause localized hotspots, accelerating degradation mechanisms. ES Publisher
• Temperature Gradients: Maintaining an optimal temperature gradient within the battery pack is essential to prevent adverse reactions and ensure uniform performance across the cell. ES Publisher

Impact on High C-Rate Performance:

While specific data on the LF280K’s performance at high C-rates is limited, studies on similar LFP batteries indicate that increasing the discharge rate from 0.5C to 0.8C at 25 °C can reduce cycle life by approximately 52.9%. We can therefor assume at 1C a rise of approximately 100% reduction in cycle life.

ES Publisher

Hypothesis:

Given the LF280K’s prismatic design and substantial capacity, operating at high discharge rates (approaching or exceeding 1C) could lead to significant internal heat generation. Without adequate thermal management, this may result in accelerated capacity fade and reduced cycle life due to increased internal resistance and potential thermal degradation.

Recommendations:

• Thermal Management: Implement effective cooling strategies, such as liquid cooling systems or advanced thermal interface materials, to mitigate heat buildup.
• Monitoring: Regularly monitor cell temperatures during operation to ensure they remain within safe limits.
• Operational Limits: Consider limiting the discharge rate to 0.5C (140 A) to align with the manufacturer’s specifications for optimal cycle life.

In summary, while the EVE LF280K cell is designed for high capacity, careful consideration of thermal management and discharge rates is essential to maintain performance and extend battery life.

Solar Battery Costs Australia

Key Factors Influencing Solar Battery Costs

1. Battery Brand and Technology
   • Popular brands like Tesla, BYD, and Sungrow often come with premium pricing due to their established partners, along with good reliability and warranty periods.
   • Lithium iron phosphate (LiFePO4) batteries dominate the market for their longer lifespan and improved safety over traditional lithium-ion batteries.
   • LiFePo4 should be the only choice for your residential battery choice, its the safe Lithium Battery chemistry, and its also the lowest cost.
2. Capacity and Scalability
   • Larger batteries (e.g., 15 kWh or more) naturally cost more but allow greater storage for homes with higher energy consumption.
   • We are finding that the average homes, especially with heating and cooling systems, require in the range of 15-45Kwh of storage especially if they want some form of grid outage protection.
   • Battery systems like Tesla’s Powerwall allow users to add capacity over time, however, they are more expensive upfront but flexible for future expansion.
3. Warranty and Lifespan
   • Batteries with longer warranties (e.g., 10 years) and higher cycle life (8,000+ Full cycles) tend to be more expensive. Many batteries are misleading due to the way cycles are counted.
     Full cycles, vs half cycles, and this is important if you are financially savvy, and know when to find the value.
   • For example, the most trusted brand EVE’s 306AH 10000 cycle cells and less well known and a new entrant to LFP cell manufacturing Hithium’s 314Ah cells, which offer 11,000 cycles, are priced higher than almost all brand name battery cells.
   • LiFePro batteries use only A grade high cycle life, ultra long lifespan cells, we do this to provide you our valued customer, with a reliable and high value energy storage system. Doing this helps us stand out as the most professional product.
4. We choose the best cells,
5. We DON’T use the lowest cost products
6. We DON’T move boxes like most modern day retailers who dont care about you
7. We do solutions that are the cutting edge of the battery industry, we choose these cells for your benefit. Buy once, and dont be fooled by flashy exteriors and brand names.
8. Government Incentives
   • Depending on the state, rebates or subsidies can significantly lower costs.
9. Installation and Compatibility
   • Retrofitting a battery to an existing solar system can increase costs compared to installing it with a new solar setup.
   • Hybrid inverters may be required, adding another $2,000 to $5,000 to the total cost.
   • We currently recommend DEYE CEC approved, and Victron for both ongrid and off

Popular Solar Batteries in 2025

1. Tesla Powerwall 3
   • Capacity: 13.5 kWh
   • Price: $12,000 – $13,500 (plus installation)
   • Key Features: Sleek design, built in inverter + 10-year warranty.
2. BYD B-BOX PREMIUM 15.4kWh
   • Capacity: 15.4 kWh
   • Price: $10000 – $12999 (plus installation)
   • Key Features: Modular design, LiFePO4 chemistry, scalable.
3. Sungrow SBR
   • Capacity: 9.6 kWh (expandable)
   • Price: $8,000 – $10,000 (plus installation)
   • Key Features: Affordable option, high efficiency, compatibility with Sungrow inverters.
4. LiFePro EVE 15.66kWh
   • Capacity: 15.66 kWh
   • Price: $5,999 – $6,999 (plus generally cheaper installation)
   • Key Features: High cycle life, competitive pricing.
   • See more LiFePro 15.66Kwh

Are Solar Batteries Worth It in 2025?

Benefits

• Energy Independence: Solar batteries store excess energy generated during the day for use at night or during blackouts.
• Cost Savings: With electricity prices averaging $0.60 per kWh during peak hours, storing solar energy can significantly reduce bills.
• Environmental Impact: Reduce reliance on fossil fuels and contribute to a sustainable future.

Challenges

• Upfront Cost: The initial investment is high, though rebates can help.
• Payback Period: The payback period typically ranges from 7 to 12 years, depending on usage and battery size.
• Degradation: Batteries degrade over time, with capacity dropping by 10-20% after 10 years.
• LiFePro 15.66Kwh payback time on peak rates ($0.60AUD)
  The payback period for the LiFePO4 15.66kWh battery, cycled daily to 90% capacity, could be as low as 2 years if the household uses 15kWh during peak times and the battery costs $5999 AUD.

State Incentives and Rebates

1. Victoria Solar Battery Loan
   • Must install approved batteries with an eligible retailer. In most cases the price of the battery will be more than twice the cost of our LiFePro battery, meaning this is only worth doing if you have chosen a battery from the CEC list. Which is not a requirement, our LiFePro battery can be connected to the grid as long as its connected through a CEC inverter, and the installer holds appropriate battery qualifications.
2. South Australia Home Battery Scheme (CLOSED)
   • Subsidy of $150 per kWh (up to $2,000), has been ended in 2024.
3. New South Wales Empowering Homes Program (CURRENT)
   • Interest-free loans for solar and battery systems.
4. The payback period for the LiFePO4 15.66kWh battery, cycled daily to 90% capacity, would be The payback period for the LiFePO4 15.66kWh battery, cycled daily to 90% capacity, would be approximately 1.94 years if the household uses 15kWh during peak times and the battery costs $5999 AUD.

Conclusion

Solar batteries are a worthwhile investment for many Australians in 2025, particularly for households with high energy consumption or frequent blackouts. While the upfront cost may seem prohibitive for brand name batteries, the LiFePro 15.66Kwh has an incredible payback period, which could be as little as 2 years.

The LiFePro battery could save you tens of thousands of dollars over its LiFespan, which we believe in some cases to be in excess of 10 years. With a performance and parts warranty of 5 Years. You can rest assured you are getting the best value for money available.

Our warranty is limited to 5 years, however the battery is a repairable design, this means should a cell or the BMS fail outside the warranty period, it would be quite simple for a trained or qualified person to make easy and quick repairs, most batteries are not repairable, so this is a huge positive you should factor into your decision. We know that sometimes a single cell inside the battery, can cause pack failure, and if a cell cost about $250-300, and you can repair this, you can extend the life of the battery well into the future.

The long-term benefits in energy savings and environmental impact make them an attractive option. By leveraging government incentives and choosing the right battery size and brand, homeowners can maximize the return on their investment.

Whether you’re upgrading your current solar system or starting fresh, understanding the costs, options, and incentives will help you make an informed decision. With the push towards renewable energy, solar batteries will continue to play a pivotal role in Australia’s energy landscape.