- May 31, 2012
In my quest for a physically smaller battery on my 71 roadster I've come up with a few AGM units that will work, but the amp hour rating is lower. Whats in it now is a standard lead acid 14 AH one but the AGM unit I'd like to use is only 9AH. To complicate things more, some of my research on the net says that AH ratings can be subjective, as not all manufacturers use the same testing methods. So taking into account Power Arc ignition, which is less voltage sensitive than a Boyer, Sparx 3 phase alternator and lights on riding, will the lesser AH battery be OK? Any problems with overcharging ?