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
TOL-10617 - SparkFun | LiPo Fuel Gauge | Evelta
SparkFun ESP32 Thing Developement Board WiFi and Bluetooth - Newegg.com