What Causes a Motorcycle Battery to Heat Up During Charging?
1 Answers
The reasons and solutions for a motorcycle battery heating up during charging are as follows: Charger or Battery Malfunction: The charger is damaged, unable to maintain a constant voltage, and remains in a constant current charging state. The battery is severely dehydrated. The battery is heavily sulfated. Solutions: First, rule out charger issues before attempting battery repair. Check if the problem lies with the charger parameters. Discharge the battery and then charge it with a compatible charger, monitoring the battery surface temperature. If the temperature does not rise abnormally to a scalding level (slight warmth is normal), it can be concluded that the issue is not with the internal battery cell groups but with mismatched charger parameters. Conversely, if the temperature rises excessively, it indicates a quality issue with the battery itself. If the battery shows no external damage, bulging, or signs of short or open circuits, you can attempt a water refill repair. Only add deionized or distilled water—never tap water, as it can cause significant self-discharge issues in the battery.