Can a battery read 12 volts and still be to wek to start your car

Can a battery read 12 volts and still be to wek to start your car

First, less than 12.4v means discharged. But even if voltage is good and starts the car OK it can still be too weak and putting a big strain on the charging system, can lead to burned alternator and other electronics, even computer in a more complex car.

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