[SoftTalker]

That's interesting. What good is 4V in an EV? You'd need cables as thick as your arm to handle the amperage to do anything useful.

[adrian_b]

You might be able to put more in series if the tolerance of the capacitance value is low enough.

Otherwise, you can use a step-up voltage converter to generate a voltage as high as you want, in order to distribute power at greater distances. You can make bidirectional converters, which work as step-down converters for charging and as step-up converters for discharging.