Exro Technologies Inc. T.EXRO

FYI ... EV Battery

[AnalogueMan]

EV Battery Specs: Voltages and Capacities

An electric vehicle battery is often composed of many hundreds of small, individual cells arranged in a series/parallel configuration to achieve the desired voltage and capacity in the final pack. A common pack is composed of blocks of 18-30 parallel cells in series to achieve a desired voltage. For example, a 400V nominal pack will often have around 96 series blocks (as in the Tesla Model 3).

Common nominal pack voltages in current vehicles range from 100V-200V for hybrid/plug-in hybrid vehicles and 400V to 800V and higher for electric-only vehicles. The reason for this is higher voltages allow more power to be transferred with less loss over the same diameter (and mass) of copper cable.

[AnalogueMan]

I posted this battery info because (ignornace) I did not understand the WHY difference between the need for 400 and 800 volt inverters. Turns out to be to accomodade different battery voltages - required for different applications. Something like that ...