Solar-charged external power source

Small cube with solar panels on top and sides of it. Lithium battery inside which would get charged by these panels. This would probably be a slow process but it's perfectly fine with people who are camping outside with no power source.

The power source could have 230V socket, USB sockets and so one.

by Zuzana Kapitancikova on 2018-07-02 11:33:53
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