Why does the battery keep getting hot after adding water?
1 Answers
Reasons for battery heating after adding water are as follows: Battery issues: Battery aging, increased internal resistance, dried-up electrolyte, or internal short circuits can cause heating. As the battery undergoes repeated charge-discharge cycles, water molecules gradually deplete (known as battery gassing and water loss), leading to heat generation during electrochemical reactions. Another cause is sulfate crystallization during charging/discharging, where sediment adheres to lead plates, increasing resistance and generating heat. These issues can be addressed through water replenishment, desulfation, or depolarization techniques. However, if heating is caused by shorted or broken plates, battery replacement is recommended. Charger problems: Standard chargers lack pulse functionality and negative pulse depolarization capability, often failing to maintain constant voltage during late charging stages. This causes battery voltage to exceed permissible values, resulting in excessive gassing, water loss, and heating. Most market-available chargers employ constant-power charging without real-time monitoring of internal resistance. Even when detected, they cannot dynamically adjust charging parameters or provide optimal charging solutions – all contributing factors to battery heating during charging.
