What does excessive heat in the battery indicate?

Excessive heat in a forklift battery indicates an overcharging condition. When a battery is being charged, it is normal for it to generate some heat; however, if the battery becomes excessively hot, it suggests that the charging rate may be too high or the charging process is improperly managed. Overcharging can lead to increased internal resistance, which generates more heat and can potentially damage the battery, reduce its lifespan, and create safety hazards, such as the risk of thermal runaway or leaking electrolyte. Recognizing this condition is crucial for maintaining the proper functioning of the forklift and ensuring the safety of operations.