Overcharging a battery causes the electrolyte to boil and evaporate, releasing toxic fumes into the air. These fumes can be both toxic and flammable. As a result, if you see smoke coming from your battery, proceed with caution. Hydrogen sulfide gas can be produced if lead-acid batteries are overcharged.
What does it mean when a battery smokes?
When a battery is overcharged, the excess pressure builds up and leaks out of the battery, causing it to explode. As flammable and toxic as the gas emitted by overcharged car batteries is, take every precaution possible.
What causes a battery to overheat?
Using Up A Lot Of Battery Power. In the same way that rapidly charging a battery can lead to overheating, rapidly discharging a battery can do the same. Using all of your car’s features while simultaneously trying to charge your laptop can cause your battery to overheat.