RE; overcharging batteries

["Alex Redding" <aredding@mail.com>]

A major reason that battery boxes rust away is that when the voltage
regulator fails, it allows the acid to boil away from the battery but
once the vapor hits colder air it condenses back to liquid.Dripping
sulpheric acid on steel is generally not good for the steel. The working
life of the batterty is also compromised.

Cheers. Alex