Battery Runtime Calculator

Calculate battery runtime based on capacity and load current. Ideal for IoT, drones, and portable devices.

Battery Capacity (mAh)

Load Current (mA)

Nominal Voltage (V)

Depth of Discharge (%)

Efficiency (%)

Peukert Exponent

t = C_usable × (C_rated/I)^k-1 / I

C_usable = C_rated × DoD × η