If your car battery is not charging or draining quickly, it could be due to various reasons. Check for loose or corroded battery terminals, inspect the alternator belt for tightness, and ensure there are no electrical accessories draining the battery when the engine is off. To check if the alternator (dynamo) is working, use a multimeter to measure the voltage across the battery terminals with the engine running. A healthy alternator should provide a voltage reading around 13.8 to 14.4 volts, indicating proper charging. If the voltage is significantly lower, the alternator may be faulty and require professional attention.
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Негізгі бет Mechanic Tips: Checking Car Battery Issues
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