Lipo+ is a battery charger PCB which is perfect for small projects. It has a small form factor and will charge any single cell LiPo you throw at it. I designed this PCB as a test PCB (of sorts) for it’s overall inclusion into a larger electronics project I am working on because I generally find that breaking down a large project first into smaller pieces and then testing those pieces alone leads to a quicker design flow than the alternative. You can use the smaller PCB’s to test the larger one before throwing everything together in a single design file, saving lots of headaches.
Included in the design are breakouts for the load, battery connector, and has a mini-usb connector as a charging source.
Microchip MCP73831 Lipo Charger IC | (PDF)
Eagle files | (GitHub)