How to Fix a Swollen Battery?
1 Answers
A swollen battery cannot be repaired. Here is relevant information: 1. Causes of battery swelling: In valve-regulated sealed lead-acid batteries during charging, especially in series battery packs, overcharging can lead to poor internal gas recombination in low-quality batteries, resulting in bulging. Setting the float voltage too high or using excessive charging current accelerates oxygen evolution on the positive plate, which cannot recombine at the negative plate in time. Meanwhile, the battery temperature rises rapidly. If venting is delayed and pressure builds up, the valve-regulated sealed lead-acid battery may bulge and deform. To prevent this, users should reduce float voltage and charging current, and avoid using low-quality batteries. 2. Battery maintenance: To extend battery life, overcharging must be avoided. First, check if the charger is qualified—cheap chargers often have significant parameter drift, such as maintaining high charging current and voltage even after the indicator light turns off. Such chargers are battery killers. Lead-acid batteries are much more durable than lithium batteries, and occasional slight overcharging is not a major issue. However, long-term overcharging will shorten battery life. The simplest way to prevent bulging is to strictly control charging time.
