I don't know about you but we have a stack of rechargeable batteries that we've used two or three times and then given up because of the inherent inconvenience of waiting for 8 hours whilst the damn things charge. So i was very interested to see these things on NOTCOT. Notes from Knut: The SunCat Batteries - DIY prototypes describes his idea of wrapping a battery in a flexible photovoltaic cell.
Probably flawed in some way, but i love the simplicity of this.
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