This half-inch square ultra-low power energy harvesting LiPo cell charger by [Kris Winer] uses a low voltage solar panel to top up a small lithium-polymer ... features like battery health ...
The company introduced its Hi-Tech Lithium Battery & Charger Series, optimized to meet the latest AIS 156 Phase 2 standards.
Rechargeable coin cell batteries are great for all your small projects ... The circuit on this coin cell charger is built from an MCP73831, a nice single cell, lithium ion and lithium polymer ...