Battery Rating vs Capacity Monitoring
Some things: Shipping batteries in the US requires the Watt-Hour rating to be marked on the battery, and the rule is to use the "nominal" voltage. So LFP uses their 12.8v figure for that 100AH x ...
Forum Discussion
As you point out, V is not constant, so you can't us Wh = Ah x V. You need to use Wh = (A x V) x t where t is time.
With a lead acid battery you get noticeably more power from the top 50% of the battery than the bottom 50% as the voltage in the top 50% is about 0.6V higher.
With a lead acid battery you get noticeably more power from the top 50% of the battery than the bottom 50% as the voltage in the top 50% is about 0.6V higher.
