![]() Turn off the engine and disconnect the battery pack in reverse order: black then red.Let the car run for five to ten minutes.Connect the black jump lead to a grounding point.Connect the red jump lead to your car battery’s positive terminal.Make sure the booster pack is fully charged - otherwise every other step is futile.If you planned for this eventuality already and have a charged-up battery-booster pack in your car, then the jump-start process is much the same, albeit without having to find a second car willing to wait around to give you a jump. Remove the jumper cables in reverse order, and be sure the leads don’t touch each other.This will recharge the dead battery enough to give it an independent start. Once both cars are running, leave them both idling for around 10 minutes.If two or three start tries don't do it, wait a couple of minutes and then try again. You may have to pump the gas pedal a few times before the engine starts. Switch on the ignition on the car with the dead battery and try to get the engine to turn over.Switch on the working car’s ignition and let the engine run for a couple of minutes.This can be any piece of unpainted metal in the engine block - provided it’s well away from the battery and fuel system. Connect the other end of the black jumper cable to a grounding point on the car with a dead battery.Connect the black jumper cable to the negative terminal on the working battery.Connect the other end of the red jumper cable on the positive terminal on the dead battery.Connect your red jumper cable to the positive terminal on the working battery.Turn off both engines and pop the hoods, then ensure the hand or parking brakes are on.Position both cars so that both batteries are within reach of the jumper cables. ![]() The working battery with jumper cables connected to both battery terminals (Image credit: Shutterstock)
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