Couple of questions about DC-Dc charging
I've been thinking about adding a DC-DC charger now that I've added 400 amp hours of AGM batteries. There are lots of useful posts but I haven't run into a couple of things I'm curious about. One ...
Forum Discussion
BFL13 wrote:
Steve, IMO that output wattage limit is "nominal" not for real, that goes with the "12v nominal". IE, 20 x 12 = 240 and says 250 limit, and 40 x 12 = 480 and says 500 limit.
I would agree with you but the spec sheet says "Max output = 500 watts" if they didnt have the "Max" in there I may think it is a nominal thing, so I think they looked at the combanation of different charge profiles and such and just rated it for the highest senerio which is fine by me.
BFL13 wrote:
I still think you could get the 40 and don't have to settle for the 20. I have a 105 amp alternator in the truck with the 20 so your 220 amper should do ok with a 40 in yours IMO.
ya I think that is what I have decided on, was just looking at different brands now, but the Renogy looks like the one I'll get. would be nice after a couple days of rain to just hit the remote start on the truck and in 2.5 hours have the batteries almost full again. would be like an auto start genny ;)
Steve
