Battery Life Calculator

Estimate the remaining hours of battery life.
It appears you have JavaScript disabled within your browser. Functions on this page will not work.
Send Feedback

Battery Life

(mAh)

(mA)

Runtime

(Ah)

(W)

Battery Life =
Battery Capacity in mAh ÷ Load Current in mA
X
Consumption Rate (0.7 default)
Runtime =
10 x Ampere Hours (Ah)
÷
Load in Watts (W)
Back to Conversion Calculators