I rehashed Adafruit's
Micro Lipo, as seen in the Minti Pi project, to have a USB C connector, and a load balancer to let the battery charge faster. Right now this version is akin to the original Micro Lipo when it comes to functionality, as the original schematic is imported into my project.
Right now I only have 18 to sell. Because of that the price is inflated a bit to $16, but with the next batch hopefully it will be cheaper.
The default charge rate is the same at 100 mAh, with an increased charge rate of 500 mAh when a bridge is shorted.
You can purchase one of these over at Tindie:
https://www.tindie.com/products/AWildTy ... o-charger/