Do batteries get hot?

[rix313]

Just a random question really do car batteries get hot?

Does it effect them if they get too hot or does it not make the slightest bit of difference?

[magpie]

mmmm,at a guess id say heat is not good for them.
but we'll soon find out no doubt.

[chriskkk]

From a battery manufacturer


Temperature
Battery capacity is reduced as temperatures go down. This is why your car battery dies on a cold winter morning. Capacity is increased at temperatures over 25 C (77 F), but battery life is shortened. Battery capacity is reduced by 50% at -22 degrees F. Battery life is reduced at higher temperatures - for every 15 degrees F over 75, battery life is cut in half, for ANY type of Lead-Acid battery, whether sealed, gelled, etc

Batteries also get hot when charging and dis-charging, and yes careful charging is required to not overheat and damage a battery

[johnlouis]

so boiling a battery by charging it with a fork lift charger is not reccommended? ;)