How long can a car battery last without the engine on?

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asked Apr 15, 2020 in Other-Cars/Transportation by 89wishmongreror (300 points)
How long can a car battery last without the engine on?

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answered Apr 16, 2020 by Mechanic21 (29,150 points)
A car battery can usually last and stay charged enough to start a car after sitting for 2 weeks to a month at a time.

To keep your cars battery charged you should start the engine for 5 or 10 minutes at least once per week and take the car around for a small drive.

That also keeps your tires from developing flat spots and going bad just sitting in one spot.

Some car batteries may last and stay charged for a few months in the car without starting the car.

But you should use a trickle charger or at least start the car every week to keep the battery from going bad.

Ideally take the car for a short drive of even around the block a few times to help keep the battery up and keep the tires rolling.

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