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> Small nit: I can 'jump' (read: charge the battery of) other cars with my model X, as long as the other car is an ICE car. In the frunk there is a panel that p
by lelanthran 3y ago
> Small nit: I can 'jump' (read: charge the battery of) other cars with my model X, as long as the other car is an ICE car. In the frunk there is a panel that pops off and underneath there are (unlabeled) 12V and ground terminals that I can put jumper cables on.
"Jump" isn't the same as "charging the battery" of other cars.
You can charge a 12v car battery with as little as 4A if you're willing to wait. Jump starting requires between 45 and 60A, minimum. For a larger car engine, you're looking at 80A-100A, or even more.
I don't think that the EV 12v terminals are able to provide that sort of current; I think those terminals are provided so that normal camping equipment (lights, winch, things like that) can be powered.
- blamazon 3y agoAnother commenter already pointed that out about the word jump, you can reference that comment for my reply. On the second point, I can comfortably pull 50-100 amps for an inverter from those terminals. I believe the DC-DC is 2500W on my car - I have an early model X which is over specified in many regards. It does not take long to charge an ICE battery enough to be able to turn a starter.
- blamazon 3y agoAnd to clarify: I don't try to start the ICE with my Tesla hooked up, mostly out of superstition. I don't see why it wouldn't work given there's also a regular old 12v sealed lead acid battery behind the frunk.