Drone Battery Voltage Sag & Internal Resistance Calculator

Analyze your battery health instantly. Enter your flight data below to see detailed performance metrics.

Flight Metrics

Voltage at Rest (V)

Voltage Under Load (V)

Current Draw (Amps)

Number of Cells

Voltage Drop - V

Voltage Sag - %

Total IR - mΩ

IR Per Cell - mΩ

Health Assessment

Awaiting Data