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Why does the battery not charge fully and get hot?

1 Answers
SanDonovan
07/30/25 8:58am
The reasons why the battery does not charge fully and gets hot are as follows: 1. Battery aging, battery water loss, battery plate sulfation; 2. Damaged wiring; 3. Poor fuse contact; 4. Poor internal plug contact; 5. Damaged charger; 6. Circuit board failure. Below are some battery maintenance tips: 1. Avoid not turning off the air conditioning when the engine is off: The air conditioning consumes a lot of power. Some drivers are accustomed to not turning off the air conditioning when the engine is off, which causes the air conditioning to automatically start the next time the vehicle is started. This leads to an instantaneous high power load on the vehicle, which can damage the battery over time. 2. Regularly wipe the battery: Use a damp cloth to periodically clean the exterior of the battery, removing dust, grease, white powder, and other contaminants that can cause leakage from the panel and the positive and negative terminals. Regular cleaning prevents excessive buildup of white acid corrosion powder on the terminals and extends the battery's lifespan. Special grease can be applied to the terminals to protect the battery. 3. Prevent battery discharge: To prevent the battery from discharging, be especially careful not to use the car's CD player, cigarette lighter, or other charging devices for extended periods while the engine is off, as this consumes a significant amount of battery current. Discharging the battery easily leads to battery damage.
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