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. 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.