Solar mat
Solar mat

This portable solar mat from SBM Solar weighs just 13 pounds.

Devices like this are crucial for troops out in the field. Normally they have to carry battery packs to charge radios or computers, packs that can weigh nearly 100 pounds.

The solar mat frees up space for more important things, like ammunition.


Last updated August 17 2011: 5:47 PM ET
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