I had cause to test one of my 12v batteries, made from 4x Eve 280ah Lifepo4 cells.
The battery had been in service for 1 year and has just completed 67 cycles. My usage, as far as discharge amps is concerned is no more than .25c maximum, with the pack running generally much lower than that. Charge rate would be similar maybe .3c on a very good sunny day, but usually much less.
The weakest cell tested at 267.8ah (865.5wh)
Of the other three the highest was 270.9 (884.2wh) with the other two just failing to make it to 270ah
Is this inside normal range, as far as loss of capacity is concerned?
The battery had been in service for 1 year and has just completed 67 cycles. My usage, as far as discharge amps is concerned is no more than .25c maximum, with the pack running generally much lower than that. Charge rate would be similar maybe .3c on a very good sunny day, but usually much less.
The weakest cell tested at 267.8ah (865.5wh)
Of the other three the highest was 270.9 (884.2wh) with the other two just failing to make it to 270ah
Is this inside normal range, as far as loss of capacity is concerned?