What can happen if a lead-acid storage battery is charged or discharged too quickly?

Charging or discharging a lead-acid storage battery too quickly can lead to overheating, which is often accompanied by the release of flammable gases. This is particularly concerning due to the buildup of hydrogen gas that occurs during the charging process. If the temperature rises excessively, it can create hazardous conditions, possibly resulting in an explosion.

Additionally, rapid charging can cause the electrolyte to evaporate, which further contributes to the risk of overheating. Proper charging rates are crucial for maintaining the integrity of the battery and ensuring safety during use. The risks associated with overheating and gas release emphasize the importance of following manufacturer guidelines for charging and discharging rates.

While other options may address different battery technologies or issues pertinent to those technologies, focusing specifically on lead-acid batteries, the primary danger from rapid charging or discharging is indeed the potential for overheating and associated risks.