[IamPurple]

Another thing to consider: the stock battery doesnt charge to full 42v, but stops at 41.something. If I connect the battery charging wires in parallel and charge with a 4 or 5amp charger, will the second battery also stop at 41.something or try to go full 42v, thus f**king sh*t up?

I think the stock battery doesnt charge to full 42v because of regenerative breaking, but other batteries I buy from aliexpress or something might actually charge fully. Maybe, IDK.