And take a look Brunton's incredibly small, lightweight Solaris 6 ($240). When folded it fits into a pocket and weighs only 7 ounces, and Brunton bills its copper indium gallium diselenide panels as the most efficient on the market (and it’s fun to say “copper indium gallium diselenide”). The Solaris will charge AA or AAA batteries and nearly any electronic device you can find. It can even trickle-charge a car battery, and it's possible to link up to three Solaris 6s for even more charging power.
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