Have a hard time finding a use for the other 9 volt battery you got in that 2-pack? Look no further that Richard Lawson’s charming DIY LED light: 9Vo(l)tive. Just stick one of these suckers on a 9 ...
When the power goes out, scrambling for a flashlight can be frustrating. Light bulbs with backup batteries solve this by providing light even during an outage. These innovative bulbs charge their ...
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