How to use the E-Bike Voltage Sag Calculator
The Formula
R_total = R_cell × S ÷ P. Sag = I × R_total. Under-load voltage = V_nominal − V_sag.
Practical Example
Estimates are for planning rides, charging, and battery health—not a substitute for manufacturer specs or professional e-bike service.
About E-Bike Voltage Sag Calculator
Pack resistance model
R_total = R_cell × S ÷ P. Sag = I × R_total. Under-load voltage = V_nominal − V_sag.
Planning note
Estimates are for planning rides, charging, and battery health—not a substitute for manufacturer specs or professional e-bike service.