Originally Posted by mgm
I know I can wire them in series, but I won't gain any significant amperage when I do that. I guess my question is if I wire them in parallel if that will cause any issue with my stock battery charger.
You MUST wire them in series. They are 6 volt batteries. You have a 12 volt
system in the AS, and a 12 volt
converter/charger. Two 6 volt batteries in series will give you the 12 volts you require.
If you connect them in parallel, you will have a 6 volt battery bank hooked to a 12 volt
charger and AS system. It will not work. Period.
Don't worry about Amps. When you series the batteries you will double the capacity of the system.
I have been using two 6 volt golf cart stile batteries in series for many years. They simply work better than any other combination for the same money.
A twelve volt battery is simply 6 two volt cells in series (wired internally). A 6 volt battery is simply 3 two volt cells wired in series (again, wired internally).
The advantage of 6 volt golf cart stile batteries is that the cells themselves are larger with more capacity in each cell, and are more rugged in design overall.