LINK   My neighbor, an avid boater, installed a marine Genasun GV-5 controller to handle his 50 watt solar panel on his vintage Travco. He says its great and gets about 40% more actual charging efficiency than standard models. The great news is it's only $75 factory direct.

If you're thinking of installing solar panels in an rv you might want to check it out

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  Pat, that looks like a good unit. Of course, there are several different brands out there a person can shop around for. I chose an MPPT (that's the type/technology NOT a brand) Solar Charge Controller over some cheaper units and that's my advice as an engineer while others may opt for different technologies which may or may not be as efficient and might cost less and that's certainly their money and their choice. The Charge Controller has to have the capacity to match whatever total solar wattage one chooses, typically 50 or 100 or 200 or more solar panel watts as that corresponds to a 10 or 20 or 30 or more amp charge controller operating at x volts. Sure 50 watts will help in an RV, but if you're going to the time trouble and expense of installing Solar Panels in the first place and do much dry camping, Id go with at least a 100 watt panel or more as space and your needs and budget allows.

 John T

Yep.  If you are going to go solar, an MPPT type controller is the way to go.  We have 3 235 watt Canadian Solar solar panels flat mounted, and use a Morningstar MPPT-60 charge controller, which handles all the watts they can put out and more.  If we wanted to, we could add a couple more smaller panels of around 100 watts or so each, and the controller would handle them just fine.  Just make sure your controller can handle the amount of watts put out by your panels.

Great learning Kevin and John T. He was so impressed with the much larger gains he got, even on cloudy days, with this MPPT type controller that he wished he'd done it years ago. As most folks readin here know electricity is voodoo to me. I'll just ask you both what to do!  

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