Battery Life Calculator
The core equation is:
Battery Life (in hours) = Battery Capacity (mAh) ÷ Device Consumption (mA)
If capacity is given in Ah or consumption in A, the calculator automatically converts units to mAh and mA respectively for accurate calculations.
To convert battery life into days, weeks, months, or years:
1 day = 24 hours1 week = 7 days = 168 hours1 month ≈ 30 days = 720 hours1 year ≈ 365 days = 8760 hours