Being energy sufficient during a crisis really interests me as a potential project. Electric devices are reduced to paper weights when there is a no power. Could there be a cost efficient way to create enough power to at least charge a mobile phone.
The attached panels are bit of an over kill but it shows have much more available and cost solar technology is becoming. This kit costs £200 and can create 100w. Most mobile phones require around 5 - 10w to charge. But even so for £200 this could be a life saving tool to have on hand just in case.
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