I'm looking into doing this as well but will spend more time crunching the numbers.
The idea of buying an $800 230v generator with 10hrs of run time is a big bonus for me (if it'll work). If I can get an all-electric range of 30miles and use this to double or triple the range it would be worth it to me to spend the extra.
Basically I'd just let the generator run at idle with it's 220v plug plugged into the charger (haven't selected one yet) while the motor runs off the 144v battery pack.
First step though is to build the EV and get a range figure. Then add the generator and see how much further I can go. That is a sure-fire way to gauge how much further you can travel with a set amount of power from the generator. The one I'm looking at is a 5500W Honeywell for right at $800.
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