Could someone explain to me why do lead acid batteries as used on cars and aeroplanes need to be charged at certain current values and say fixed voltage 14.1V, and you have to be careful not to overcharge, yet when connected to a vehicle there is no charge regulation?
Most car alternators do infact have a regulator built-in to control the output voltage. I believe it is usually set at 13.8-14 volts to prevent overcharging as highlighted above. Thought I was taught at school years ago that a lead acid bettery on charge will always produce some gas (hydrogen + oxygen), but that overcharging causes excessive gassing.
