Why doesn't the car battery hold a charge?

1 Answers
MacKaden
07/24/25 3:53pm
The reasons why a car battery doesn't hold a charge are as follows: 1. Battery aging or damage. 2. Aging of the generator belt. Functions of the battery: 1. When starting the engine, the battery supplies power to the starting system, ignition system, and electronic fuel injection system. 2. When the engine is stopped or at low idle, it powers the vehicle's electrical equipment. 3. It can assist in supplying power to electrical equipment when the generator output is insufficient. 4. It mitigates voltage surges in the electrical system, protecting the vehicle's electronic devices. 5. It can store excess electricity generated by the alternator.
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