How long to leave car running after jump?

After starting a car with jumper cables, the general advice is usually to drive for half an hour to recharge the battery.

This is usually the case, but better advice than the first would be to go to a garage to check the condition of your battery.

The battery has probably reached the end of its charge cycles. It is very likely that you will need to replace the battery. If not, the best thing to do is to recharge the battery completely using a battery charger.

You may be too lazy to go to the workshop, and you may think that the battery will be able to last a few more months. However, you are exposing yourself to running out of battery power again in the near future, especially if it is winter or you live in a cold region.

On top of that, you run the risk of having an even more expensive part of your car break down. I’m talking about the alternator.

If you want to recharge the battery again by driving the car for at least 30 minutes, you will be using the alternator to do so. In the event that it has not been fully recharged, it will not take long to run out again. Over-stressing the alternator more than a couple of times is a breakdown risk you don’t want to take.

So don’t be lazy and check the condition of your battery after a first failure!

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