Our Price

Deye 51.2v 100AH Rack Battery 5kwh 5.12kwh SE-G5.1Pro-B

Original price was: $2,150.00.Current price is: $1,800.00.

Battery rebate estimate Federal Cheaper Home Batteries Program
$1,292.00
Estimated STCs
34
Eligible capacity cap
5.12 kWh
STC factor
6.8

Estimate only. Final discount depends on install date, verified usable capacity, CEC-approved equipment, accredited installation, solar PV eligibility, STC market/admin handling, and official REC Registry calculation.

SKU: SE-G5.1 Pro-B Categories: , , , , , , Brand:

Description

Deye 51.2v 100AH Rack Battery 5kwh 5.12kwh SE-G5.1Pro-B

The Deye SE-G5.1 Pro-B is a high-performance 51.2V Lithium Iron Phosphate (LFP) battery designed for residential and commercial energy storage. Engineered for reliability in Australian conditions, this cobalt-free module offers high thermal stability and seamless integration with Deye and other leading 48V hybrid inverters.

Key Performance Features

  • High Discharge Capacity: Supports a 100A continuous discharge current, ideal for high-load solar applications.
  • Superior Safety: Uses Cobalt-Free LiFePO4 chemistry with an integrated BMS providing over-voltage, over-current, and temperature protection.
  • Massive Scalability: Supports up to 64 units in parallel (327kWh) without external hardware.
  • Flexible Installation: Compatible with 19-inch racks, wall-mounting, or floor-stacking configurations.
  • Smart Management: Features auto-networking for easy setup and supports remote monitoring/upgrades.

Technical Specifications

ParameterValue
Battery ChemistryLiFePO4 (Lithium Iron Phosphate)
Nominal Energy5.12 kWh
Nominal Voltage51.2 V
Operating Voltage43.2 – 57.6 V
Recommend Charge/Discharge Current50 A (0.5C)
Max. Continuous Discharge Current100 A (1C)
Peak Discharge Current150 A (2 mins @ 25°C)
Depth of Discharge (DoD)90%

Physical & Environmental Data

FeatureDetail
Dimensions (W/H/D)440 x 133 x 540 mm (3U Height)
Weight (Approximate)45 kg
IP RatingIP20 (Indoor Use)
Operating TemperatureCharge: 0 to 55°C | Discharge: -20 to 55°C
Cycle Life≥6000 cycles (@ 25°C, 0.5C/0.5C, 90% DoD)
Communication PortsCAN2.0, RS485
Warranty10 Years (Standard)
CertificationsIEC62619, CE, UN38.3, UL1973

 

The warranty is valid for either 10 years or until the battery reaches 16 MWh of total energy throughput, whichever comes first. This throughput is measured at the point where the battery retains 70% of its original capacity (End of Life/EOL).

To put that into perspective for a single 5.12kWh module:

  • 16 MWh = 16,000 kWh.

  • If you cycle the battery fully once per day (~4.6kWh usable), you would reach the 16 MWh limit in approximately 3,478 days (about 9.5 years).

  • If you are a light user and don’t fully cycle it daily, the 10-year time limit will likely trigger first.

Additional information

Weight48 kg
Dimensions50 × 50 × 22 cm
Capacity

100Ah, 5kWh

Voltage

51.2V

Chemistry

LiFePO4

Certification

CEC Approved, IEC62619

Use Case

Home Battery, Off-grid, On-grid

Brand

DEYE

Rebate Eligible

Yes

Installed Package

No


Real customer experiences

What our customers say

10 Google reviews preserved in our local archive.

4.5/5 Last recorded from 16 reviews
Russell Vosseler
Mark and the team have done a great job finding the best solar and battery solution for my house, my parents house, and also friends' houses.
Their batteries are top quality, not like the cheap and nasty ones you find with "special low deals". Best to pay a little extra and get quality products.
Their aftersales service is exceptional with continual support after installation. Mark had provided guidance months after installation to maximise the production of my inverter, and continues to provide valued suggestions even now. 😀
Ken Baker
just received my 30 jinko panels this morning...from initial enquiry to delivery in metro adelaide was 4 days!...on top of that LifePo4 beat the other quotes on price so needless to say I am very happy with the purchase. highly recommend
Steph G
I can’t speak highly enough of Mark at LiFePo4 Australia – they’ve now saved our motorhome adventure twice!
The latest drama hit when our battery failed mid-trip, leaving us in a power pickle. Even though it was outside business hours, Mark jumped on the phone and organised a replacement battery with lightning-fast turnaround.
This is the second time Mark has gone above and beyond for us – always friendly, knowledgeable and genuinely committed to getting you sorted. Couldn’t recommend them enough.
Response from LiFePo4 Australia

Thanks Steph. I'm glad we could assist. The cells you picked up before finding us at LIFEPO4 AUSTRALIA might have been B grade. We are glad we could help out with the 2 cells so far. If any of the others drop out, I'll send out replacements as quickly as we can. Enjoy your travels

Read all 10 preserved reviews
Peter Demol
I had an excellent experience buying components to assemble 2 battery packs. Mark is extremely knowledgable about the products he sells. He answered all my questions, prices are excellent, and when there was a potential issue, he went over and above by supplying extra products at no extra cost. Shipping halfway across the country to a rural area took only 3 business days which is insanely fast. I am totally happy with my new batteries and with Mark's excellent customer service. After 10 years of FLA batteries, finally going to lithium technology is heaven. Thanks again Mark. Very happy customer.
Vicki Wattus
Awesome customer service, Mark went above and beyond in sorting my order when we ran into a few snags with it. I would recommend this company to anyone who values good price, service and a great customer experience.
Response from LiFePo4 Australia

It was my pleasure Vicki, we love helping out especially those who need a little bit of help. We hope your get years of service from the Victron MPPT and Jinko 510W solar panel, thanks for you patience over the weekend while we arranged the shipping for the panel to the depot nearest you. The $200 we saved on shipping, was well worth the delay over the weekend. Safe Travels Mark

Ray Carson
Absolute legend of an owner great 10 star customer service and product and knowledge to match..!!!
Not just a salesman...anything but absolute legendary service and knowledge to suit..
T R
Cells arrived, a bit of a delay. But overall we'll priced and packaged.
garry miille
Mark knows what he is talking about when it comes to batteries. Great pricing and very helpful too. Just a great experience all round.
Dapper Rausimen
I totally agree with the other 5 star reviews and can highly recommend buying lithium cells from this business. I received my order of 72 automotive MB31 batteries quickly and I am very impressed. All the cells were within 0.01 of a volt so didn’t require balancing or top charging before installing. They are the real deal A+ automotive grade EVE cells as advertised and not B grade rubbish some online sellers are supplying. Mark actually answers the phone if you need to discuss anything before purchasing and is one of the few people I have found selling lithium batteries that actually now’s about how to install and set voltage settings in the BMS’s he sells.
Elliot C
Super helpful gentleman. I barely prompted him and he gave me plenty of important and useful information. Best customer service I have had in as long as I can remember.

Originally published on Google and preserved from our local review archive. These reviews describe experiences with LiFePo4 Australia generally and are not necessarily about the product shown on this page.

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