MEXICOWANDERER wrote:
Is setting up a Megawatt with a tiny generator too much to bear?
I guess no one can explain the difference between charging our AGMs slowly to low acceptance current levels versus charging them quickly to low acceptance current levels. However I'm really not all that worried for my AGMs, anyway.
We don't drycamp long enough in any one place to ruin the batteries by using the converter's only 13.X volts at campsites to partially top them up with the converter fed from one of our two generators. This is supplemented via periodically charging the RV's AGM batteries the supposedly correct way using higher voltages and currents from the 130 amp alternator by either idling of the big engine a bit, or while driving to another campsite.
I can see those higher charging voltages and acceptance currents happening via the gauges I've mounted on the cab's dash specifically for that. This system has so far worked out well given our hit and run camping style.
FWIW, for our next drycamping trip I'm going to try powering a different stand alone charger with our 650 watt Honda to top up the AGMs at the campsite. I have a high end ProMariner waterproof marine 3-bank multi-stage charger in which I've combined it's three charging outputs into one pair of alligator clips. I'll see if this delivers high terminal voltages to the RV's AGM batteries while I monitor the current going into the batteries.
If we were RV squatters the little generator powering an adjustable built-in converter or stand alone adjustable charger - like Mex is advocating for - would certainly be the way to go.