[Barry] sent us a tip about a video from [electronupdate], describing an experimental cell phone charger. It’s a familiar issue: Your cell phone battery is low, and you aren’t in a position to ...

Cell-phone Chargers in Purses and Bags 01:40 You don't want your cell-phone battery to run out of juice when you're on the go. All kinds of devices promise to give your phone a boost, even some ...

How this isn’t a product already, we’ll never know. The circuit on this coin cell charger is built from an MCP73831, a nice single cell, lithium ion and lithium polymer charge management ...