Part 2/5:

"You can see that now, yes, the cell is visibly bulging," the expert notes, pointing out the physical change. This visible swelling indicates the buildup of internal pressure due to the excessive accumulation of energy within the cell. Such deformation not only jeopardizes the integrity of the battery but also increases the risk of catastrophic failure.

The Hazards of Overcharging

The demonstration underscores the potential dangers associated with overcharging. When a battery is overcharged, it heats up considerably. During a controlled experiment, a temperature rise of about 10°C was observed, which is significantly higher than the usual increase of around 3°C seen with properly managed charging using a reliable power source.