Very Inexpensive Battery Maintenance Charger
1.0 ampere output. 13.8 volts regulated charge limit. This unit is good for 100 amp hours worth of batteries. IMO the voltage is a tad high for a high antimony RV battery with temps 60F or higher but ...
Forum Discussion
Mex wrote:
These critters live day in and day out in RV's and emergency vehicles, where charging system voltage ranges from 13.8 - 14.4
But didn't you say you were floating them (assuming day after day?) at 13.75V? If that kind of float voltage ruins wet cell batteries over time (as all in the forums say, due to their converter experiences), why wouldn't it ruin an AGM battery where the manufacturer specifically states to use 13.2V for float? It makes me think that Lifeline has something unbeknown to us in their AGM construction or chemistry that is different enough for them to recommend a float voltage lower than what most other AGM manufacturers specify.
That's what concerns me about what you are doing. :)
By the way, I think those temperatures in the temperature versus float voltage charts refer to the most logical thing - ambient air temperatures that the battery is sitting in.
