[Jay Kickliter] built his own coin cell battery recharger ... So we’re happy to see this charger project come along. Now the bad news. We looked around and indeed you can find LR2032; a ...

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 ...

A USB Type-C charger (left) alongside Apple's proprietary Lightning cable The European Union has given phone manufacturers a deadline of 28 December 2024 to adopt a common charging cable.