IGR

Done that so max of 53.6v was done starting from 44v but primary battery just will not show capacity of more than 28.5 so it goes down to 0% in a few hours despite te V still in the 49.5V range

Thx. How far below 44V as I have gone to 44 and then charged to 53.6 with no change. Battery still shows capacity as 28.5Ah

What is more confusing is that while the capacity of one is 28.5Ah, when run down so SOC is 0% it still shows a voltage reading of 49.8V which makes me doubt the accuracy of the capacity reading. How do I correct the capacity reading?

I bought one battery in Dec21 and another in Sept22 and now with software have established that my 2 batteries have different firmware resulting in absolute weird readings as below: Bat1 Bat2 Capacity. 29Ah 100ah SOC. 4.2%. 62.1% Charge capacity. 1.2Ah. 62.1Ah Cycles. 561. 88 Looks like the different firmware could be the issue?