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Letter Re: Advice on Backpacking Solar Panels

CPT Rawles:
I realize that you aren’t an advocate of fully-mobile retreating. Yes, I can see the wisdom of having a well-stocked fixed retreat. But since I’m still in college (due to graduate in 2011), my situation is different. Until a get a job, I can’t afford a retreat, and I’m not in any sort of a group. So I’m approaching the whole preparedness thing coming from the viewpoint of “just what I can fit in my car”, with the back-up plan of “just what I can carry on my pack”, or perhaps pushing/pulling a small deer cart, like you’ve mentioned.

My question is: What sort of solar panels can I buy that will charge a goodly-sized base camp battery, for [charging] trays for all my AA, C, D, CR-123, and 9-volt batteries. (These are for my radios, flashlights, and the combination laser/light for my SIG P250 pistol.) I’m a kinda power hog, so I need at least 20 Watts of charging power. I need something that is lightweight, sturdy, compact non-breakable, weatherproof, and affordable. (Like, under $350.) Am I dreaming? Oh, FYI, I’m good with a soldering iron. (I’m a E.E. major.)

Thx, – H.L.G. in Texas

JWR Replies: The panel that I recommend is the Brunton 26 watt foldable solar array [1]. These use amorphous solar cells, so the panels are flexible. These are much less prone to breakage than glazed monocrystalline panels. Add a small charge controller, a 3-to-5-pound gel cell, some Anderson Power Pole modular DC connectors and a couple of battery charging trays, and you will be all set.