Why is the car not charging?

[JeremiahDella]

The reasons why the car battery cannot be charged are as follows: 1. If it is caused by loose charging line connections, simply reconnect the charging lines properly. 2. If it is caused by a damaged charger, simply replace it with a new one. 3. If it is caused by low battery fluid, just add pure water and perform maintenance charging and discharging to restore the battery capacity. 4. If the car battery still cannot be charged, it may be damaged and needs to be replaced with a new one. Battery maintenance methods are as follows: 1. Regularly clean battery dust: Regularly clean dust and grease from the car battery terminals and apply special grease to protect the wiring harness. 2. Regularly check the lines: Regularly inspect battery accessories and connecting lines. 3. After the car is turned off, minimize the use of electrical devices. 4. When not in use for a long time, start the car periodically.

[ArthurFitz]

Last time my car wouldn't charge, it took me two full days to find the cause. At first I thought it was the battery aging, since it had been used for over four years, and the voltage measured below 12 volts. Upon closer inspection, I found the alternator output was insufficient, the belt was a bit loose and not properly tightened. Additionally, there was corrosion on the wiring connectors, and poor contact also affected charging efficiency. Luckily there was no accident - it would have been dangerous if the battery suddenly died on the highway. I immediately went to the repair shop to replace the battery and tighten the belt. Now I regularly check the battery status. If anyone encounters this situation, it's best not to push your luck - early repair saves both trouble and money.

[StNorah]

I've encountered the issue of a car not charging several times. Simply put, start by checking the fuse. If the fuse is blown, the charging system will be cut off. Then inspect the battery; loose or corroded terminals can hinder current transmission. The alternator is a critical component—if its output voltage is abnormal and drops below 13 volts, it needs repair. Worn-out wiring is also common, as damaged wires can cause short circuits. If you're unsure, using a multimeter can help make a preliminary diagnosis. Regular maintenance, like keeping the battery clean, can extend its lifespan. Avoid jump-starting carelessly, as it can easily lead to accidents.

[Alves]

Failure to charge the car battery should be taken seriously, especially in cold weather. The battery may be damaged or sulfated, preventing it from holding a charge; a malfunctioning alternator or broken belt can also stop charging. The risk of breaking down on the road is high, such as stalling at traffic lights, which can disrupt traffic. I recommend pulling over immediately and calling for roadside assistance. Develop good habits by testing the battery voltage every six months. Proper maintenance can significantly reduce such failures.