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Open Roads Forum  >  Beginning RVing

 > Best solar trickle charger???

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FLY 4 FUN

Alberta

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Joined: 11/27/2004

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Posted: 03/05/19 08:07pm Link  |  Quote  |  Print  |  Notify Moderator

Im on the fence with your concern. I understand that the phantom loads are draining ur battery while in extended storage, but I would just pull the 30A fuse on the tongue before leaving it...problem solved.

If you want to keep it "up and running" and put back more than the phantom loads take out then its going to take at least 25-40W of solar, wiring, charge controller etc to accomplish this. If its a portable system are you confident it wont be stolen?

Unless you want to install a somewhat robust solar system for true charge capabilities I would just install an inexpensive cut off switch and use it in storage. Those tiny/cheap solar "maintainers" are in my mind simply useless in rv's and a cloudy week may mean you still show up to a dead battery. Just my .02


2012 Dodge Ram 3500 crew SB 4x4 CTD 3.73
2015 Brookstone 315RL
2009 Colorado 29BHS (sold 2015)
05 Jayflight 29BHS (sold 2008)
99 Jayco Eagle 12SO (sold 2005)

Harvey51

Alberta

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Posted: 03/06/19 09:20pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 12 watt one and gave up on it. It was too much trouble keeping it aimed at the sun to get near the 1 amp it is supposed to provide. It was useful for charging flashlight batteries with some trouble hooking them up.

Our 100 watt panel flat on the roof of our class C motorhome, with Renogy charge controller, provides all the electric energy we need in summer but I can’t use it much in winter due to snow on the panel. I simply disconnect the house batteries and check voltage once a month. If down to 12.4 volts I put a charger on them (usually once every 2 or 3 months).


2004 E350 Adventurer (Canadian) 20 footer - Alberta, Canada
No TV + 100W solar = no generator needed

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