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DIY: How To Turn a Playing Card Into a Solar-Powered Battery Charger

A few weeks ago we shared Instructable‘s handy DIY guide to building your own solar-powered USB charger. Now, the website has provided a guide to creating a solar-powered charger for rechargeable NiMH AA and AAA batteries with a twist – it’s made from a playing card! Read the rest of DIY: How To Turn a [...]
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