Some NiMH batteries that have flexible solar cells wrapped around them to trickle charge them when in sunlight.
Sounds like a neat idea, leave dead batteries on the windowsill and they charge up on their own. Not sure if this is commercially viable
Some NiMH batteries that have flexible solar cells wrapped around them to trickle charge them when in sunlight.
Sounds like a neat idea, leave dead batteries on the windowsill and they charge up on their own. Not sure if this is commercially viable
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I possess a Solio which is a similar idea... In the summer it is pretty handy for festivals and such.