What do parameters like V(Volt) mean for ebikes?

What do parameters like V(Volt) mean for ebikes?


Power equals Voltage by Current:

The higher the voltage, lower current is necessary to get the same amount of power (P=VI). 
The voltage should be managed by compromising safety and current rating of component.
This is a parameter which is set based on electrical characteristics of the motor/controller and wiring. 

Voltage has no mechanical effect on the ebike performance. 
Having a higher motor or battery Voltage does not translate a higher performance or higher range by itself. 
Voltage in Li-Ion battery is a matter of number of cells in series.
 

Battery Voltage will not be constant and varies based on SOC (state of charge) a complete charged battery voltage is about 42V when it is nominally 36V and battery voltage is about 30V when the battery is considered complete depleted.


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