Fold-Up Carrying Case Solar Panels At Harbor Freight

[AndyW]

I have that 5-watt one, mounted on the rock guard the way the U-Haul trailers had it. It seems to keep the battery topped off, but we're generally just away for a night or two.

[Byron Kinnaman]

I just looked at the specifications on HF folding panels. Max current = 400 mWatt. That's 0.4 amps. Not much there. Might keep your battery up if aren't using it.

[Joseph Domingos]

Originally Posted by cpaharley2008

What size controller you need is dependent upon your capacity. CW has a 8 amp one for $20
Rdk Products - Nature Power Solar Battery Charge Controllers- 8 Amp - RV Solar Power - Camping World
It says this is good for 120 watts.
I bought a 15 watt panel and controller from CW and it keeps my dual group 27 batteries fully charged while sitting and with the phantom drains of the propane/radio/tv on it still keeps it 100%. I'm hoping to get 1 amp per hour or 6 per day to allow me to go 4 days using 25 a/h per day before having to hook up again.

Ordered one of these Jim, we'll see how it works. I'm kind of viewing this set up as my 'learning process' set. I'll play with the panels and the controller, figure it all out, and learn a bit along the way, hopefully without hurting myself or my trailer! hehe
Joe

[Bud Kennedy]

If this is only a 15 watt panel, then you don't need a controller if your battery is any size at all. I have been usung mine on a group 24 battery with just a direct connection.