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Usually, when jumping another car, you are supposed to leave the car running, getting power off the alternator rather than the battery.
by mankyd 11y ago
Usually, when jumping another car, you are supposed to leave the car running, getting power off the alternator rather than the battery.
- X-Istence 11y agoYou don't get the massive amount of power required for the starter from the alternator. You leave your car on so that in case the other car is severely broken or zaps all the remaining juice in your car's battery you don't end up stranded.
- prutschman 11y agoYou don't need to; I used to have a really crummy set of jumper cables that wouldn't actually pass enough power to start my car with the battery dead. I'd have to stay connected to the other car long enough to let its alternator charge my battery enough to start.