Sam Abuelsamid joins Leo to talk about how you cannot jump start a gas car with an electric vehicle. The chief reason is that EVs have two batteries, one that runs the entire car system and acts as your main energy source, while the 12-volt battery runs things like windows and the radio. That extra 12-volt battery has a lower capacity and lower amps. There's also no alternator in an EV, like in a combustion engine. It has an inverter instead to handle DC to AC conversion.
This means that for jump-starting a car, an EV 12-volt battery doesn't actually have the cranking amps to turn an engine over, and the main battery is far too powerful and could blow out the electrical system in the gas car.
So it's best to have a portable jump starter that can fill the gap. You can get them at any auto parts store, Target, Walmart, etc. Then connect the red or positive terminal first, and then take the negative terminal connection and attach it to the frame.