Charging AGM batteries
I have never owned an AGM battery, but the new trailer I am getting will have 2 of them. I replaced the converter/charger in my previous RV with a PD4655V, and am thinking of installing the same i...
Forum Discussion
BFL13 wrote:
It is important to know exactly which AGMs you have, since different AGMs have different charging specs. EG, some want to be charged at 14.8-14.9 volts while others only want 14.4ish volts. A regular PD at 14.4 would "undercharge" an AGM that wants 14.8 or so. You can get a PD from Randy that does 14.8
Some AGMs have a specified amps limit while being bulk charged too, like 27 or 30 amps per 100 AH. My two 100s are like that, so a 55 amp charger is just right for the pair. OTOH some AGMs can take more amps per 100AH.
Mex says do not obsess about the various charging specs, but IMO if you can meet the specs, then why not do what they say?
And as we've discussed before ad nauseam here on the forums some manufacturers (East Penn being one) insist that temperature compensated charging be used. Mex may not care but my bet is with East Penn's recco. :W
