Lithium (LiFePO4) Battery Charge Time Calculator & Formula
Shortcomings of all the above methods 1 - Battery life cycles count: Batteries lose their charge-holding capacity as they age or after a few hundred cycles. After 1000 cycles, a 100Ah lithium battery may only be able to store 80Ah. 2 - Battery charger efficiency: The battery charging efficiency will depend on the battery''s state of charge.