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Do you have to drive the car around after jump starting a dead battery or can you just keep the engine running?
Wiki User
∙ 9y ago
It is not absolutely necessary to drive the vehicle for the battery to recharge, BUT...
If you allow the vehicle to stand idling for a long period of time without moving, you run the possible risk of the engine and cooling system overheating, which could damage the engine.
Therefore it is suggested that the vehicle be driven for a few miles to recharge the battery, OR stay with the vehicle while it is stopped/idling, and monitor/watch the engine/coolant temperature gauge and/or idiot light.
IF the gauge approaches full hot, or the hot coolant warning light comes on, then either take the vehicle out for a drive to cool it down, OR turn the engine OFF.
Wiki User
∙ 9y ago
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Weak alternator?Check with a voltmeterWithout engine running and a good battery reading should be around 12.8 With engine running reading should be 13.8-14.2
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Connect a voltmeter across the battery terminals without engine running reading should be around 12.8 With engine running reading should be 13.8-14.2 if you are getting these numbers alternator is charging battery
Will your alternator recharge your battery if you let it sit for a while?
If the engine is running and the alternator is good. If the engine is not running, no.
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If it is running on the battery only then that means the alternator is not charging the battery.
Does an alternator charge a battery while the car is not running?
No , just when the engine is running
Will disconnecting a battery cable cause a 2009 Chevrolet Cobalt's engine to stop running?
Yes, and disconnecting the battery while the engine is running can severely damage the computers
How do you charge a vehicle battery?
By running the engine on the vehicle or by connecting the battery to a 12 volt battery charger.
