SolLight offers the SOLiCharger, a soloar-powered rechargeable backup battery for iPhone and iPod touch. The SOLiCharger is a small lightweight Lithium-ion battery pack that can be charged from solar power. It offer iPhone or iPod touch up to 50% full charge.
This solar backup battery pack plugs directly to iPhone 2G, iPhone 3G and iPod touch. It can also be charged from computer via the Apple/USB cord, from 110v Apple USB charging cord, from any 12v Apple compatible car charger.
SolLight SOLiCharger is priced at $39.95.