RC Calculations Logo Battery Resistance Demo

This page shows the effect that battery resistance has on usable voltage and output power.

Select the desired nominal voltage and drag the sliders to vary the battery internal resistance and motor current. Note the difference between battery voltage rating and actual output voltage on the meter, especially as current and/or battery resistance are increased.

Pack Voltage:
Building List...
Cell Resistance:
Nominal pack voltage: V
Total pack internal resistance:
Voltage drop from internal resistance:
Voltage available at ESC:
Motor Current: A
Pack power dissipation (power loss): W
Motor output power: W
Motor Current A