When a battery is overcharged, the voltage applied to it is higher than what is required to fully charge it. This can cause the battery to overheat and start releasing gas.
Sulfation
Sulfation occurs when lead sulfate crystals build up on the battery's plates. This can reduce the battery's capacity and also lead to out gassing.
Excessive heat
High temperatures can also cause a battery to out gas. This is why it's important to keep your battery in a cool, well-ventilated area.
Damaged battery
A damaged battery is more likely to out gas. This is especially true for batteries that have been in a collision or that have been exposed to extreme weather conditions.
Here are some tips for preventing car battery out gassing:
* Ensure your battery is properly maintained. This means keeping it clean, free of corrosion, and topped up with distilled water.
* Avoid overcharging your battery. Use a voltmeter to monitor the battery voltage and make sure it doesn't exceed 14.4 volts.
* Keep your battery in a cool, well-ventilated area.
* Avoid exposing your battery to extreme weather conditions.
* Have your battery tested regularly. This will help you identify any problems before they cause damage.
