What to Do When Your Car Battery Voltage Is Low?
2 Answers
Here are the reasons and solutions for low car battery voltage: 1. When starting the vehicle, listen carefully for any unusual sounds from the engine. If present, it indicates the car battery is dead. Solution: Charge the car battery promptly. 2. If the car battery is faulty, you can test both the battery and the alternator to see if they are functioning properly. Solution: If the car battery or alternator is damaged, replace them immediately. 3. If the car shows low battery voltage but can start normally, the issue is minor and can be ignored. Here are some related tips: 1. During daily use, try to avoid keeping the lights on or listening to the radio for extended periods while the engine is off. 2. When parking for a long time, turn off unnecessary electrical devices (such as interior/exterior lights, audio, navigation, etc.).
Last time after camping, my car broke down directly, and I only found out the battery was dead after calling for roadside assistance. Now I've learned my lesson and keep an emergency jump starter in the car, the Xiaomi power bank-sized one fits perfectly in the glove box. I always unplug the dash cam power if parking for more than three days, and I've added a separate switch for the modified high-power audio system wiring. If the voltmeter shows a drop below 11 volts, I immediately drive out for a half-hour loop on the ring expressway to activate and charge the battery. Before the New Year, I replaced it with a Varta AGM battery - never cheap out with regular batteries for start-stop vehicles, the mechanic said this could extend its life by two years.
