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E-Bike

E-Bike Controller Amps to Watts Calculator

Convert controller current draw to motor input and shaft power at different battery voltages.

WattQuick

Electrical input power

960W

816 W at shaft · 85% efficiency

Save Report: Download your battery and solar calculation specs as a private PDF via JoinMyPDF.

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About E-Bike Controller Amps to Watts Calculator

Controller to motor power

Input watts = V × A. Shaft power is lower after motor and drivetrain losses—use manufacturer efficiency when available.

Planning note

Estimates are for planning rides, charging, and battery health—not a substitute for manufacturer specs or professional e-bike service.

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