SparkFun USB LiPoly Charger - Single Cell - PRT-12711 - SparkFun Electronics
Buy SparkFun Pro nRF52840 Mini - Bluetooth Development Board Includes LiPo battery charger Qwiic connector Onoff switch Reset switch User LEDbutton Pre-programmed with a USB bootloader Small footprint Online in Italy. B07MWGN5KV
PRT-13777 Sparkfun SparkFun Battery Babysitter - LiPo Battery Manager Arduino, Electronics and Robotics Electan, OnLine Store