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Envision ESS 72173207 305Ah - LiFePO4 - 3.2V B-grade

Additional Information

EAN / GTIN  6097319748772
Weight - g  5500
Brand  Envision AESC
Model  ESS 72173207
Battery chemistry  LiFePO4
Voltage  3.2V
Capacity - Ah 305.00
Discharge current - A 305.00
Included  Busbars
Terminal type  M6
Height - mm 207.00
Width - mm 173.00
Thickness - mm 71.00

Availability: Pre-order. Estimated shipping date: 28 juni 2024 (in 32 days)

This product is for pre-order, we don't have it in our warehouse yet but it is in transit to us from our supplier. The shipping date is an estimated date.
€76.95 (€ 63,60 without VAT)
  • Buy 4 times for €74.50 (€61.57 without VAT)   
  • Buy 8 times for €72.90 (€60.25 without VAT)   
  • Buy 16 times for €71.90 (€59.42 without VAT)   



Manufacturer: Envision
Model: ESS 72173207-305A
Dimensions: 71mm x 207mm x 173mm
Capacity: 305ah
Weight: 5.5kg
Maximum discharge: 305A (1C)
Rated Voltage: 3.2V
Above: including screw terminals, busbars and screws.
Protection: None
cycle life to 70%: 5000 cycles!

Additional Information




Customer Reviews

Products came in great shape! Review by Alex
Not a scuffmark anywhere on the 8cells i bought.
They were all very, very flat and came in great condition.

Not yet had time to cycle and check capacity but seems solid so far! Could draw 150A without any issue. (Posted on 10-05-24)
First class service Review by Kev
I placed an order for cells on back order so I expected some delay. I was kept informed of progress and advised when there was a delay. When the cells arrived, one had been damaged while in transit. I informed NKON who promptly arranged for the cell to be collected. They informed me when they had received the damaged cell and when a replacement was shipped. Basically, communication was excellent and they dealt with the damaged cell efficiently and with no fuss. First class service and the cells are very good as well. (Posted on 01-03-24)
Excellent choice for each cent spent Review by Amber
Great product, wisely priced. The only con is that the barcodes are scratched, so you can't check them anywhere. Probably expected from the B grade, and I'm guessing it's done by the manufacturer to mark the gray sheep. Out of 4 cells, one is slightly bulged, but the rest are nearly perfectly flat. Also, I was advised not to fasten them with more than 6Nm of torque. Awesome support service by the way! (Posted on 03-02-24)
Good cell for the price. Review by Snakeiboy
For this price it is an excelent lifepo4 cell I think. Delivery and cell build quality is ok. Thank you. (Posted on 21-01-24)
Envision ESS 72173207 305Ah Review by Arunas
Everything is great, the delivery is fast,the batteries correspond to the description. thank you. (Posted on 29-12-23)
Overall good with some issues Review by Oaky
I found the 16 cells to test above nominal capacity (average: 309.69Ah). I have posted a detailed review on the Boards.ie renewable energies forum (comment# 121012673)

See review: www.boards.ie/discussion/comment/121012673/#Comment_121012673 (Posted on 29-08-23)
Info Review by [email protected]
Hi plese possible send me tech list for this battery? Thank (Posted on 03-07-23)
liquid in the cells! Review by phil du sud France
I have never seen such a problem, liquid in a lifepo4! I test them in charge / discharge, not sure that the lifespan is at the appointment. The after-sales service confirmed to me that I had to use them standing up. (Posted on 28-06-23)

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B-grade cells are cells usually did not qualify as A-grade by the manufacturer. This may be due to optical imperfections, higher self-discharge, lower capacity and/or higher internal resistance. Unfortunately manufacturers don't tell which aspects or aspects are the reason to mark a a specific cell as B-grade. We have sold several and get seldom negative feedback. We tested several eve B-grade and one had about 2% lower capacity, the other ones we did not find a difference with A-grade cells. We don't advise B-grade for high performance electric vehicles but for home energy storage they will work fine. In case you get one which performs significant less than the others like lower capacity, high self-discharge or fast wear we will replace it. Take care that we don’t put a lot of trust in a simple test of a single cell, if you buy 16 cells and you test them and they are all 6% lower than expected then your test gives to low results. If you buy and test 16 and 15 cells give you 100% and one cells gives 5% lower results then we will replace one. When we buy cells the cells are tested for voltage and internal resistance. Also a couple of every batch are tested for capacity, and if one gives less than 100% capacity we test the whole batch and discard the bad ones or don't buy the batch at all. Lot of seller in china buy B-grade cells, test them, even swap qr-codes and sell the good looking and performing as A-grade cells. We believe our B-grade cells are the same as lot of A-grade cells from China, including the well known resellers there with good reputation. We give regular warranty on these cells (at least 2 year).