But the original poster asked:
How many volt-amps are they trying put in these cars?
They were asking about storage while using the measurement of delivery.
Typically the damage is proportional to the current, not to the voltage.
The current is going to be determined by the voltage, and the impedance (resistance) of the system which includes the body parts in the circuit as well as the connection to return path of current, typically involving the ground.
Thank you, thackney. The meaning of the word "power" is understood by few people. It is rarely used correctly in articles, even those written by people who should know better. This even happens in text books, since the word is difficult to use correctly.Power is a rate. It can't be made, used, stored, or sold. Power companies don't make power. You don't pay your power bill.
Most people think power is energy. It is common to hear people say something produces so many watts per hour.
thackney, I know you know this, but for those who don't, power is the amount energy converted from one form to another in a given time. Energy is measured in joules. Power is measured in joules per second. A watt is a joule per second. Therefore, energy can be calculated by multiplying power times time.
Someone who does not know this produces confusing questions and comments. It requires care to use the word 'power' correctly. When in doubt, use joules per second instead of watts. Use joules for energy.