• 0 Compare
  • 0 Wishlist
  • Shopping Cart
    Shopping Cart CLOSE

    No products in the cart.

  • Sign In
News Lithium Battery-school
admin , , , , ,
The Lifepo4 QR code B to A Grade problem

Q. What is a QR Code?
A. Its a 3D barcode

Q. What is a Barcode?
A. A visual representation of data

Q. Can a barcode be scanned to verify authenticity of unique products?
A. NO! A QR code does NOT authenticate product genuineness because it can be easily copied or duplicated by anyone.

Put Simply, if I have some text or numbers, I can quickly and easily generate a QR code. It is static data. It does not connect to EVE or any other manufacturer.

Q. Why I keep writing these articles over and over?

Part 1

I am observing that most sellers in Australia (Melbourne, Sydney, Rockhampton, Perth, and Brisbane) sell B grade cells as A grade. They either don’t care, or they don’t know themselves. It’s really disappointing.

I have to defend our own business sometimes, yet those same people attacking me are under the impression that the other sellers are selling genuine products, but I KNOW they aren’t.

a) I know because I have seen their cells in person, and I have seen the packaging. I can see they are buying from QSO, Basen, Docan, or EEL by the boxes, the stickers, the busbars, and the QR CODE! b) I have spoken to most of the sellers personally. c) I have seen the evidence over and over again.

Part 2

I have always known what a barcode and therefore a QR code is. I have personally worked in stock control systems since I was a teenager and in IT for years. I sold and supported stock control systems. We work with barcodes all day, and we know what a keyboard wedge is. (I know that 99.8% of people do not.)

Part 3

I only recently realized that most (not all) people do not understand what they are or how they work.

I’ve watched multiple people scan the code, thinking they were connecting to an authenticity server or something. Recently, I actually watched a guy scan his “known fake” jacket, which had a QR code on it, and I finally realized that people just don’t understand this technology in general.

Let me say this in BOLD red text!

QR CODES DO NOT AND CAN NOT VERIFY AUTHENTICITY

QR Codes for DUMMIES

Below this paragraph I have given you a QR code generator. You can make it do whatever you want within a set number or characters. It can create any data, like

If I have a spreadsheet with genuine QR codes, I can then generate a QR Code. If someone gets a hold of a spreadsheet like this one, attatched here. EVE uses a 24 character “string” of numbers and letters as their identifier.
1200px .xlsx icon.svg1
Click it to download the spreadsheet of real QR codes, from a real EVE spreadsheet

Use this tool in orange, to create your own EVE barcodes using the Spreadsheet.

In Depth detail of QR codes

The amount of text a QR code can hold depends on the version and error correction level. Here’s a general idea:

  • A standard QR code (Version 40, the largest version) can hold up to:
    • 7,089 numeric characters
    • 4,296 alphanumeric characters
    • 2,953 binary (8-bit) bytes

However, practical QR codes used in everyday situations usually hold much less data to ensure they are easily scannable.
For best results, it’s advisable to keep the text short, typically under 300 characters, to maintain quick and reliable scanning.

Summary

EVE and others like them use QR codes for internal tracking while manufacturing battery cells. They are not there for the end user, to verify the authenticity.

QR Code created with a QR Generator by LiFePo4 Australia

THIS QR will have the string of data “https://www.lifepo4.com.au” You can scan this with a camera app, or a QR Code scanner and it will take you to this website, it won’t work with the LIFEPO4 QR Scanner, because that app has been modified to interpret batteries only.

If you have the spreadsheet with genuine QR codes, You can then generate a QR Codes and upload them to the Laser Engraver, and every 5 seconds you can laser engrave a new QR code onto a B grade cell, making it appear as a genuine A grade product, that even matches the spreadsheet you are look at.

Stop thinking chinese people are not educated, the truth is that many chinese, over 100 Million of them hold college degrees, they are smarter that you, almost certainly. And it only takes a few to tell the others what to do. Just like an egineer would do in Australia to his subordinates. As of recent data, approximately 18.3% of Chinese people hold higher education degrees.
That means, that there are more educated people in china, than the entire population of USA and Australia combined.
It also means that there are at least 10-20 educated chinese people for every one of us.
Make your own judgement.

image

How to use a spreadsheet to generate and print new QR codes with a Laser

If someone (think shady chinese battery mafia figure) gets a hold of a spreadsheet like this one, attatched here. They can then upload the data onto the Laser Machine, then one by one, they will write over the top of the Invalid or B Grade QR Code. Thus making a Battery cell with 280ah appear to be a 330ah cell.

It is really simple, the entire process takes a few seconds at most per cell. I have seen a video of this being done, I did not have the ability to save that video, and I can not seem to find it no matter how hard I google, and Baidu it. The videos are private for obvious reasons. But they do exist.

The Process of QR code Re-Lasering

Q How does QR replacement take place, and who is doing it?

A. In china, there are vast warehouses full of products that did not meet specifcations for use in commercial or high voltage battery pack use. They are still batteries, and they work, but for how long I hear you ask?

“how long is a piece of string”

b54eeda7 4f3d 4bec be74 ddefbde04ff0
IMG 20230604 223542 1
4090a58f a847 4412 8675 643a02ad5d06
IMG 20230604 223954 1
01a29d98 1128 4074 925c 9b1b4cbf1c0c

High Voltage Module and A grade Pack disassembled

QR CODES DO NOT AND CAN NOT VERIFY AUTHENTICITY

Summary
A QR code is like a sticker. Anyone can print the same sticker and put it on anything, so it doesn’t prove the product is real. Only trusted sellers, like us, can guarantee the product’s genuineness. 

How to decode the data from EVE LFP Batteries

This is the EVE format of a QR code

How to Quickly Identify Fake Batteries Part 3 QR code parsing

Why a Lifepo4 QR Scanner app does NOT verify the Authenticity or Genuineness of Batteries

As we have discussed, a QR code is STATIC,
1. It does not connect to a database and return anything that can be used to know if the product is real or fake.

The Lifepo4 QR Scanner App, has a database, (think of it as a big spreadsheet. The database contains all the cell models, and some logical programming for the app to be able to decode all known QR codes. The user who created this app, did this to assist the community to try to know what product of battery cells, and where they were made and what capacity they were.
He has been able to gather enough data to make it work for the most popular manufacturers.

Once he has this image and others like it from the other manufacturers, he can very easily decode the important data, and that will return you a result on what that QR is supposed to be attached or printed on. (notice I said supposed)

H95df8f324b3a4959bece3fdc98ad34dbm1How to Quickly Identify Fake Batteries Part 3 QR code parsing
Why Does all this even matter?

In a high voltage battery pack, it’s crucial that the batteries in series are matched and high quality because:

  1. Balanced Performance: Matched batteries ensure consistent performance, as each battery will charge and discharge at the same rate.
  2. Safety: High-quality batteries reduce the risk of failures, such as overheating, leaks, or explosions.
  3. Longevity: Using matched and high-quality batteries extends the overall lifespan of the pack by preventing weak batteries from causing the entire pack to degrade faster.
  4. Efficiency: Ensures that the battery pack operates at optimal efficiency, providing reliable power output without losses due to imbalance.

By ensuring batteries are matched and high-quality, you maintain the safety, efficiency, and durability of the high voltage pack.

But wait there is more!

If a single battery cell in a high voltage pack is faulty, it impacts the entire pack because:

  1. Chain Reaction: In a series configuration, the current flows through each cell in the chain. A faulty cell disrupts this flow, reducing the pack’s overall performance.
  2. Reduced Capacity: The faulty cell limits the pack’s capacity to the weakest cell, causing the whole pack to discharge faster and reducing its overall capacity.
  3. Safety Risks: A single faulty cell can overheat or fail, potentially causing damage to adjacent cells and posing safety hazards like fires or explosions.
  4. Increased Wear: The healthy cells are forced to compensate for the faulty one, leading to uneven wear and shortening the lifespan of the entire pack.

In summary, a single faulty cell can degrade the performance, capacity, and safety of the whole pack, highlighting the importance of ensuring all cells are high quality and well-matched.

Now the best way to explain this. using math

if you have 16 cells in series, all of which are 330ah, though a single cell has only 150ah of capacity, then the entire pack will loose 55% of its capacity.

In this example the single cell, limits the pack to a total of 16 x 150ah. Making your pack only 7.6Kwh, when it should be 16.8kwh.

In dollars in todays market, this would mean,

A $5000 investment would loose $2750 in value.

Making your battery worth only $2250

Not only this but the cell will continue to cause problems, causing your power to cut off regularly, and remain out of balance, and it will strain every other component in your pack.

Not only this but the cell will continue to cause problems, causing your power to cut off regularly, and remain out of balance, and it will strain every other component in your pack.

e0d9bf352a509dd7b53c206fd69ef54
IMG 20230604 223542
IMG 20230604 223827
IMG 20230604 223954
IMG 20230604 230526

Notice these are 2023-2024 cells, V3 LF280K or MB31

shipping lfp
News Lithium Battery-school
admin , , , , , ,
Understanding Lithium Battery Cell Purchasing from China: Navigating Quality and Shipping Challenges

The process of purchasing from China lithium battery cells, particularly for do-it-yourself (DIY) projects, is fraught with complexities and pitfalls, largely stemming from issues of quality and shipping. As a specialist in the field with extensive experience, I aim to experienced on these challenges, providing insights that stem from my personal journey in navigating this treacherous terrain.

The Allure and Risks of Using Alibaba

Many importers continue to be drawn to platforms like Alibaba due to apparent cost savings and convenience. However, a significant risk lurks beneath the surface: approximately 90% of importers end up with subpar, or “B grade,” cells. This pervasive issue is largely attributable to the shipping practices and the inability to visually distinguish between A and B grade cells.

Why Most Cells Are B Grade

The core of the problem lies in the shipping practices employed by many Alibaba vendors. These sellers often resort to “black market shipping,” where containers filled with dangerous goods (like lithium batteries) are not properly declared. This involves using what is known in Chinese as “special line” shipping, which typically involves bribes to customs officials in both China and Australia.

This unorthodox approach allows sellers to dramatically reduce shipping costs—sometimes by half compared to reputable companies like EVE Energy, which adhere strictly to international shipping regulations for dangerous goods. EVE Energy, being a billion-dollar enterprise, cannot risk the legal and ethical implications of concealing dangerous goods in regular shipments.

e0d9bf352a509dd7b53c206fd69ef54
IMG 20230604 223542
IMG 20230604 223827
IMG 20230604 223954
IMG 20230604 230526

The Difference Between A and B Grade Cells

From a technical perspective, A and B grade cells may appear identical, but their performance and reliability diverge significantly. EVE Energy, for instance, implements rigorous testing procedures during their 3-4 week manufacturing process. This includes specialized charging processes, capacity checks, and voltage tests, which classify cells into categories like A+, A, B, and B- grades. Up to 40% of cells are downgraded to a lower grade due to identified defects during these tests.

Our Approach: Ensuring Quality and Compliance

Given the complexities of legally and safely importing lithium cells, I have taken the route of organizing my own shipping and securing necessary certifications for transporting dangerous goods. This approach, while time-consuming and complex, ensures that I provide only A+ grade cells, unlike the prevalent B grade cells that flood the Australian market through less scrupulous importers.

The Misrepresentation by Alibaba Sellers

A common tactic among Alibaba sellers is falsely representing B grade cells as A+ grade. This misrepresentation is facilitated by the structure of the supply chain, where cells are warehoused en masse and drop-shipped by vendors who often operate merely as call centers. The consequence is a market flooded with inferior cells sold under the guise of top-tier quality.

Conclusion: Navigating the Lithium Cell Landscape

The challenges of purchasing lithium battery cells from China revolve around navigating through a murky landscape riddled with deceptive practices and regulatory challenges. My expertise and commitment to quality and safety have allowed me to overcome these barriers, ensuring that I can provide genuinely high-grade lithium cells.

This situation underscores the importance of rigorous due diligence and understanding the intricate dynamics of international shipping and quality control. By sharing my experience, I aim to enlighten potential buyers and DIY enthusiasts on the pitfalls of the market and the critical importance of sourcing from reliable and ethical suppliers.

In simpler terms, buying lithium battery cells from China can be tricky. Many buyers (importers) get tempted by lower prices on platforms like Alibaba, but often end up with lower-quality, “B grade” cells due to shady shipping practices where sellers don’t declare dangerous goods properly to cut costs. This is risky and against the law.

On the other hand, reputable companies like EVE Energy follow strict shipping rules, which makes their cells more expensive but ensures they are of high quality. I’ve gone the extra mile to organize my own shipping and make sure everything is above board, which means I only provide top-quality, “A+ grade” cells.

To put it plainly, if you’re looking to buy lithium cells, it’s crucial to understand that the cheapest option might end up costing you more in the long run due to poor quality. It’s better to pay a bit more for cells that are safely and legally shipped, ensuring you get what you pay for—reliable and effective batteries.

To clearly highlight our approach: we manage our own shipping and customs processes entirely within legal frameworks. This commitment to legality and ethical practices sets us apart from many sellers around the world who often resort to shortcuts like purchasing from Alibaba to save on shipping costs.

By purchasing in bulk and overseeing every step from customs clearance to delivery, we ensure that we provide only A+ grade cells. This direct involvement allows us to maintain high standards of quality and safety, unlike many other sellers who compromise on these aspects to reduce expenses. This unique approach ensures that our customers receive the best possible product without the common risks associated with improperly handled imports.

Probably the best information we can give you is to outline the actual practices

  1. EVE might sell a battery for $68-78 USD A+ grade
    Shipping might be $500-800 AUD for 16 cells (Its always more expensive because its legal shipping)
  2. Alibaba sellers buy B grade cells from anywhere between 50-75% of the A+ grade price.
    This means $34-56 USD
  3. The Alibaba seller will then quote you $63-$78 for that same cell
    But not only that there shipping quote to you might be $300-600.
  4. The price is not that important, BUT! they are also making profits on the shipping because its not DG shipping. Its illegal.
  5. They do not declare the Batteries as DG in Australia either, so they pay $100’s of dollars less for this shipping pathway.
  6. This is all profit. The process has been improved over a few years. So its now down to only a couple of shipping companies who handle all of the deliveries in Australia
  7. In many cases, they do not pay GST either or only a tiny fraction of what should be paid.
    This is our money, our countries money, that is supposed to go back into, schools and hospitals and such for the benefit of our country. No in the pockets of overseas companies who are also selling bad cells to us.

The total price is always lower through Alibaba sellers. The Alibaba seller makes $20-35 USD more per cell. This means they can put signinificant effort into replacing a QR code with valid data.

The Laser etching technique which is used to replace a QR code, machine is a very cheap investement when we are talking about replacing the QR code of thousands of cells a day. The investement into this machinery and process is now extremely profitable.

The cells are purhased in lots of thousand and hundreds of thousands. They are transported to a warehouse/ processing centre. where they are graded again and then relabelled with a new QR code. The QR code is from genuine A+ grade cells. A QR code is just letters and numbers. So this data is taken from a genuine batch of A+ grade cells. The spreadsheets from EVE A+ grade cells are used to create what appears to be A+ grade cells. This process costs about $1.50 USD per cell.

LF306K MB31
News Lithium Battery-school
admin , , , , , , , , , , , ,
Comparing the most popular 300AH Lifepo4 cells

Comparing the EVE LF304 to the LF280, LF280K, and LF280k v3, MB30, MB31 we can analyze the key differences and similarities among these popular Lifepo4 cells.

You can also find out why the next generation of MB (Mr Big) cells is better than the last, mostly due to the new stacking technique being employed by just a small number of LFP manufacturers. At this stage CATL, EVE have next generation cells, not yet freely available. But in the near future, you will be able to purchase these cells if you don’t buy them from the grey markets.

EVE LF304

EVE 304ah 300Ah 310Ah 320Ah
LF304 EVE

The EVE LF304 has a cycle life of 4000 at 0.5C/0.5C. Giving it an estimated lifespan of up to 11 years.
The EVE LF304 is EVE’s high power cell, with thicker coatings,

Capacity: 304Ah
Nominal Voltage: 3.2V

LIFEPO4 AUSTRALIA OPINION
Cycle Life @ 1C : 2000 Cycles
Cycle Life @ 0.5C : 4000 Cycles

Claimed Cycle Life @ 1C : 4000 Cycles

Production technology – Winding

LF280

LF280

The EVE LF280 has a cycle life of 4000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 11 years
Capacity: 280Ah
Nominal Voltage: 3.2V

LIFEPO4 AUSTRALIA OPINION
Cycle Life @ 1C : 2000 Cycles
Cycle Life @ 0.5C : 4000 Cycles

Maximum Continuous Discharge 1C
Production technology – Winding

LF280K

eve lf280k 2
EVE LF280K

The EVE LF280K has a cycle life of 6000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 16 years
Capacity: 280Ah
Nominal Voltage: 3.2V

LIFEPO4 AUSTRALIA OPINION
Cycle Life @ 1C : 3000 Cycles

Cycle Life @ 0.5C : 6000 Cycles
Production technology – Winding

LF280k v3

The EVE LF280K has a cycle life of 6000 cycles (A+ Grade 8000 Cycles) at 0.5C/0.5C. Giving it an estimated lifespan of up to 16 years
Capacity: 280Ah
Nominal Voltage: 3.2V

LIFEPO4 AUSTRALIA OPINION
Cycle Life @ 1C : 4000 Cycles
Cycle Life @ 0.5C : 8000 Cycles

Cycle Life: 6000 Cycles (A+ Grade 8000 Cycles)
Maximum Continuous Discharge 1C
Recommended Discharge 0.5C

Production technology – Stacking

MB30

The EVE MB30 has a cycle life of 10000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 20-25 years
Capacity: 306Ah
Expected Real measured capacity when new 320+AH
Nominal Voltage: 3.2V

LIFEPO4 AUSTRALIA OPINION @ Thermally controlled environment
Cycle Life @ 1C : 5000 Cycles
Cycle Life @ 0.5C : 10000 Cycles

Cycle Life: 10000 Cycles
Maximum Continuous Discharge 1C
Recommended Discharge 0.5C

Production technology – Stacking

MB31

The EVE MB31 has a cycle life of 8000 cycles at 0.5C/0.5C. Giving it an estimated lifespan of up to 20-25 years
Capacity: 314Ah
Expected Real measured capacity when new 330+AH
Nominal Voltage: 3.2V
Advertised Cycle Life: 8000 Cycles

LIFEPO4 AUSTRALIA OPINION @ Thermally controlled environment
Cycle Life @ 1C : 4000 Cycles
Cycle Life @ 0.5C : 8000 cycles

Maximum Continuous Discharge 1C
Recommended Discharge 0.5C

Production technology – Stacking

Stacking vs Winding

Longer life span
The stacked battery cell has more tabs, the shorter the electron transmission distance, and the smaller the resistance, so the internal resistance of the stacked battery cell can be reduced, and the heat generated by the battery cell is small. The winding is prone to deformation, expansion and other problems, which affect the attenuation performance of the battery.

Comparing process of stacking battery vs winding

Stacking
Winding
Energy density
Higher. Higher space utilization.
Lower. There is a C angle, and the larger the capacity, the lower the utilization rate.
Structural stability
Higher. The internal structure is uniform and the reaction rate is relatively low.
Lower. There is a C angle, which leads to uneven rate of internal reaction of charging and discharging.
Fast charging adaptation
Better. The multi-pole plates are connected in parallel, the internal resistance is low, and the charge and discharge of large current can be completed in a short time, and the rate performance of the battery is high.
Poor. During the charge and discharge process, the degradation rate of the active material at the high temperature position is accelerated, and the other positions are rapidly attenuated.
Safety
The risk is low. Stress distribution is more consistent, which keeps the interface flat and more stable.
Lower. Potential problems such as powder shedding, burrs, pole piece expansion, and separator stretching are easy to occur at the bend.
Cycle life
Longer. Low internal resistance, relieve battery heating during fast charging, improve battery chemical system stability and prolong service life.
Shorter. It is easy to deform in the later stage, which in turn affects the cycle life of the battery.
Productivity
Large-capacity batteries are generally low, mainly 6-8PPM.
Higher, generally at 12-13PPM.
Yield
Low, the glitch problem is prominent.
Higher automation, higher yield rate, higher number of pole pieces.
Process maturity
Low, the number of pole pieces is large, and the investment in equipment is large.
Higher, fewer pole pieces, mature equipment and low investment cost.

Summary of new technology

Technologies such as low-expansion anode materials, full tab design, electrode surface treatment, and flexible electrode forming help resolve liquid infiltration challenges for large cells, enabling comprehensive safety protection and high cycle life through heat insulation, diffusion prevention, pressure relief

What to choose for a battery with the longest lifespan.

EVE MB30 Automotive A+ verified cells directly supplied from EVE, not via a third party, not via Alibaba, and not from most resellers and battery pack manufacturers including almost all battery builders in Australia and China, unless they can provide you with a) the official eve delivery report for the cell purchase, and b) evidence that the QR code is genuine and not re-lasered.
The B grade to A grade problem is going to be larger with the new models the LF280K v3 which is actually the MB30

A genuine QR code should be shiny behind the data that has been printed.

CleanQR wpp1710016061418
QR EVE LF304
Lithium Battery-school
admin , , , ,
How to Top Balance Lifepo4
  1. Hook up the LiFePO4 cells in parallel – (that means connecting all the positives together and the same for the negatives.)
  2. Charge to 3.45V with a regulated DC power supply with overvoltage protection. This part takes a long time! And your power supply should be large enough to cater to your needs. Our exclusive 30amp Lab supply is voltage and current limited here.
    IMPORTANT – DO NOT CHANGE THE VOLTAGE AFTER CONNECTION TO THE CELLS
  3. Once it hits 3.45V, then adjust the target voltage to 3.65V, keep an eye on the cells during this stage, the voltage will rise very rapidly and it’s good not to rely solely on the overvoltage protection feature of the power supply. Check with a multimeter very regularly.
  4. Once you hit 3.65V, turn off the power and leave for an hour or more. Check to see if it’s still over 3.5V. If not, charge it up to 3.65V again and leave it for another hour. Repeat until it does.
  5. Once done, reassemble the pack into your desired battery Voltage eg. 12V or 24V, and discharge
  6. Storing at a high level of charge is not good for the LiFePO4 cells. If storing for a long time, discharge down to 30-50%. If possible, keep the battery below 90% SOC and above 10% SOC. It will increase the lifespan of the cells. And definitely help with cell bloat.

    Congratulations you have successfully manually top balanced.

An alternative (not ideal or recommended) way to top balance a battery pack with a BMS, such as the JBD BMS is to connect the battery cells in series, and slowly, incrementally increase the pack voltage inside the Bluetooth app. (occasionally this will not work if the cells are at different SOC, please be aware, it could take weeks to balance if that were the case, and therefore it’s not usually recommended unless you don’t have any access to an appropriate voltage limited Lab supply)

1. Wire up the Battery in series. Eg, connect the 4 cells (positive to negative) Which will create a battery of about 13.2V for a 4s LiFePo4 Battery.
2. Charge with a charger between 14v and 14.6v. Slower is better
3. Inside the JBD Bluetooth app (XiaoXiang), set the fully charged voltage to 3.45v, and a total pack voltage of 13.8v and charge it until the BMS stops. Inside the app turn off the charge balancing feature and leave until all the cells are balanced.
4. The following day or more inside the BMS Bluetooth app settings increase the pack voltage to 14.4v (3.6v per cell) or 14.6v (3.65v) and ensure the balance on charge is turned off. The battery will then go and top balance itself. Leave here until balanced

Xiamen Haichen New Energy Lithium Battery
Blog Lithium Battery-school Manufacturers
admin , , , , , , ,
Hithium 280ah 300ah and 320ah cell Lifepo4 Review

Wondering about Hithium Lifepo4 cells quality?

Hithium 280Ah cells are a type of lithium iron phosphate (LiFePO4) battery cells. They are known for their high energy density, long cycle life, and safety features123.

Information about the cell. The cell is identical to the current reference design of a prismatic Lifepo4 cell with the dimensions of 207mm x 173mm x 71mm. These are identical in every way to the cells made by CATL, EVE, CALB, GOTION, BYD, GREAT POWER, REPT, SUNWODA and the list goes on. All of these currently manufacturer this exact same cell, with the exact same dimensions. They all use the same ingredients, with very minute differences to the cathode and anode and electrolyte mixture.

202303301648005656
290AH
Hithium 280AH
  • Product certifications:
    IEC 62619, UL 1973, UL 9540A, UN 38.3
  • Company certifications:
    ISO 9001, ISO 14001, ISO 45001
  • Environmental Compliance: ROHS, REACH

High safety

  • Hithium-developed prismatic LFP cell with high thermal stability
  • Passes crush and nail penetration test
  • Ultra wide operating temperature range


Overall this cell is modified to last longer. Although the truth is the cycle count can be manipulated such as 6000 cycles at 80% is the same as 9000 cycles at 70% and so on. So the claim of 10000 cycles is probably true. Especially considering they are made with the intention of Energy storage, so with a Hithium cell you know you are getting something that will last a very long time.

3.2V 280Ah LiFePO4 Battery Prismatic Cell With 10000cycles (evlithium.com)

News Blog
admin , , , , ,
Kings vs Voltx Lithium Battery

Lets start with The Kings 120Ah Lithium LiFePO4 Battery it’s a reliable and versatile energy storage solution. Let’s explore its features:

120thumbnail1
  1. Capacity and Chemistry:
  2. Applications:
  3. Quality Assurance:
    • Kings prioritizes quality by integrating a robust BMS.
    • With its impressive cycle life, this battery can serve you reliably over the long term.

Remember to follow proper charging practices and safety guidelines to maximize the lifespan of your Kings 120Ah Lithium Battery.

We 100% recommend the kings 120Ah lithium battery for those who do not want to spend all their money on their setup. There are better batteries out there. But 98% aren’t that much better to demand 5 times the price.

VOLTX 100ah Lifepo4 Battery Review.

image

The VoltX 12V 100Ah LiFePO4 Basic Lithium Battery has garnered positive reviews from users. Let’s delve into some feedback:

  1. Richard B. from Metropolitan Adelaide, SA:
    • Describes the battery as “faultless” and praises its bargain price.
    • Used it for over 6 months without issues.
    • Runs two fridges (40L & 60L) for days on end, primarily charged via solar.
    • His brother also purchased one with similar success.
  2. Udo:
    • Calls it “perfect” and great value for the money.
    • Works well for his off-grid setup.
  3. Goona:
    • Labels it a “brilliant battery” that outlasts AGM batteries.
    • Faster charging and significantly lighter.
    • Going strong for almost 3 years.
  4. Keith Wilkinson from South East Queensland, QLD:
    • Replaced a 120AH AGM with this battery.
    • Powers a chest freezer through a 3000W inverter.
    • Reliable even after cloudy days.
  5. Mark:
    • Appreciates its lightweight (half the weight of AGM).
    • Runs fridges and an inverter without issues.
  6. Steve K:
    • Loves it for camping with a 75L fridge.
    • No more messy ice-filled eskies.

SUMMARY
Both of these batteries are basic with no Bluetooth or management options, but they both do what they say. The Kings battery has the advantage of larger capacity, but also with many retail locations you can always get customer service if required. It should be noted that at this price point, The warranty is a mere 12 months.
But for the price, I think its pretty fair, Its likely the batteries will last a few years, but without a warranty. You might be unlucky and get a dud!

Remember that individual experiences may vary, but overall, the VoltX 12V 100Ah LiFePO4 Basic Lithium Battery seems to be a solid choice for various light applications, and I would choose a voltx battery over any Lead Acid battery every day of the week.

For more detailed reviews, you can check out ProductReview.com.au.1

We recommend this battery only when the Kings Battery isn’t available.

Lithium Battery-school
admin , , , , ,
Are second life Lithium Batteries safe?

Are you considering repurposing battery cells and building your own Powerwall or similar Energy storage system?

We are going to take a look at what you must understand before starting a project of this type.

The Chemistry

NMC or NCA

Both of these chemistries are considered dangerous, and they should be avoided, especially in any second life application. And even more importantly in any residential application. There is a real risk of a short circuit, leading to thermal runaway. Both of these chemistries will be extremely difficult to extinguish. And may explode, and burn anything and everything around it down to ashes, Firefighters will not try to extinguish a Lithium Battery fire, as they know they have no option but to wait for the

The capacity loss of LiBs is generally considered to be linear, with end of life typically around 75% to 80% state of health (SoH) and the final end-of-life stage around 50% to 60% SoH. However, at some point a severe and potentially dangerous deterioration can occur and lead to an increased ageing rate. The time at which this occurs, referred to as the “knee,” is difficult to predict. It can occur at a higher SoH than expected, thereby increasing the risk of thermal runaway, internal short circuits, and joule heating, according to the report.

Lithium Iron Phosphate

Although it is possible for LFP to enter thermal runaway, it is very unlikely, and usually only happens when external heat is present, it can also happen when the cell is at 100% SOC and is supplied with a very high current, such as

What is Thermal Runaway?

EVE factory locations
Lithium Battery-school
admin , , ,
Who is EVE Energy?

EVE Energy is a technology-driven company focused on the development of lithium batteries. Their products are widely used in the IoT, EV and ESS. Eve Energy makes prismatic, pouch and cylindrical battery cells. Along with a range of other batteries, including Lithium metal non rechargeable batteries.

Company Website – www.evebattery.com
EVE Energy Co., Ltd. (stock code: 300014)

Household ESS, Utility ESS, and Telecom ESS with products covering cells, modules, battery systems, battery management systems, and other comprehensive solutions

Renaissance One Progress 768x6541 1
News Blog
admin , , , ,
Who is Energy Renaissance?

Energy Renaissance is Australia’s first lithium-ion battery manufacturer and they produce batteries that are safe, affordable and optimised for hot climates at Tomago, NSW. They are building an exciting future where the world is powered by clean, stored energy everywhere – right here in Australia. They work with CSIRO as our research collaborator and Cadenza Innovation as our technology partner. Energy Renaissance will advance local battery manufacturing capabilities, create jobs in Australia and build significant economic benefits for our lithium-ion battery materials industry through a local supply chain. More than half of the batteries will be exported to Asia and when its production facility is operating at capacity, Energy Renaissance will be able to make enough batteries to power every public school, hospital, fire station, SES unit and new homes built in Australia.

[embedyt] https://www.youtube.com/watch?v=F-Iysy6CmyY[/embedyt]

Energy Renaissance is developing Australia’s first advanced lithium-ion battery Gigafactory. 

Driving sustainable economic development and creating jobs in regional Australia. For every employee they hire, Energy Renaissance has the potential to create five jobs in upstream industries.

A look at the current product available by energy renaissance

renaissance superRack™ twin

pre-configured higher voltage multi rack system with unique ship-in-rack capability

The Renaissance superRack™  twin has been designed from the ground up for faster, simpler, safer implementation and maintenance. Ideally suited for commercial, agricultural and utility scale applications.

The superRack™ Twin design makes it easy to address a wide range of power and energy applications. Scaling is simple with multi rack systems that are pre-configured and with our unique ship-in-rack capability this means faster, easier and more cost effective installation.

  • Powered by cybersecure Renaissance superBMS™ and supported by cybersecure Renaissance superEMS™
  • 10-year performance warranty
  • High energy density kWh/㎥
  • Real time monitoring and reporting down to the minute via the Energy Renaissance portal, accessible from any internet connected device
  • Air cooled for safety and reliability
  • Transportable; packs designed to be transported in rack to site
renaissance superRack twin 2

You can find more on there website here

Contemporary_Amperex_Technology-Logo
Lithium Battery-school
admin , ,
Who is CATL?

CATL is the leading Lithium and as of 2023 Sodium-ion battery manufacturer in China and the World.

CATL (Contemporary Amperex Technology Limited) is a Chinese battery manufacturer that produces lithium-ion and as of 2023 sodium-ion batteries for electric vehicles (EVs) and energy storage systems. The company was founded in 2011 and has quickly become the leading EV battery manufacturer in the world. It supplies batteries to a number of major automakers, including Tesla, Volkswagen, BMW, and Toyota. CATL has also established a number of partnerships and collaborations with other companies in the EV and energy storage industries.

The company provides research and development, production, and sale of electric vehicle and energy storage battery systems. It also provides battery management systems, materials, battery cells, and battery recycling and reuse systems. These batteries are used in electric passenger vehicles, electric buses, electric trucks, and other special vehicles; and spare parts. The products of energy storage systems find their applications in renewable energy, communication base stations, grid frequency modulation, commercial and industrial buildings, and household energy storage. It also operates its business from Ningde, Fujian, China also has production in Germany, and overseas offices in Japan, France, and the USA regions.

LiFePo4 Video from CATL

Official CATL VIDEO

HOW China’s CATL makes its batteries

X
0