Can a swollen car battery still be used?

[SanWilliam]

A swollen battery cannot be repaired and should be replaced immediately. Continuing to use a swollen battery may lead to the following consequences: 1. Polarity reversal: A swollen battery is prone to polarity reversal in later stages, where the positive terminal becomes negative and the negative terminal becomes positive. This can cause the charger to burn out and damage the controller. 2. Fire hazard: If the controller and charger lack comprehensive protection functions, it may also lead to vehicle fires. Additional information: Causes of battery swelling include: Battery swelling is one of the most common battery failures, often appearing as bulging on both sides. The main causes are excessive charging or discharging currents, which rapidly increase the battery's internal temperature. If the gas cannot be vented in time and the pressure builds up to a certain level, swelling or deformation occurs.