Battery life calculator
How long a battery lasts.
How it’s worked out
Capacity × usable share ÷ draw. Real batteries give less than the label, more so in the cold or under heavy load. Lower the usable share for a cautious estimate.
How long a battery lasts.
Capacity × usable share ÷ draw. Real batteries give less than the label, more so in the cold or under heavy load. Lower the usable share for a cautious estimate.