How do I hook up a second car battery?

How to hook up a car battery charger?

  • hook up battery charger to car battery while the battery is still hooked up to the car

  • Answer:

    put the red wire on the POS battery and the black on the NEG part of the Battery plug the charger into the outlet and turn it on

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Other answers

The red cable goes to Positive and the black cable goes to the Negative. Also it is good to make sure the battery is still hooked up to the car or it can be unhooked from car.

ELEPHANT

1- red cable of charger to + or pos terminal of battery. 2- black cable of charger to - or neg terminal of battery. be charger is unplugged when connecting.

Ron H

the same as you would if the battery wasnt hooked up to the car.

Jayson

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