Main Feature Creative products,BLE-Nano-Board:Keywish Upgraded nano board for arduino,The main chip is ATMEGA328P-MU QFN32,the latest bootloader (Arduino IDE 1.8.8) was
Product Description: Li-Pol TP4056 Single Cell 1S 3.7V USB Type C Battery Charger with Safety
Features
Single-cell charger for lithium polymer batteries with a voltage of 3.7 V. The module is based on the TP4056 chip. The chip is powered via a USB Type C connector. The charger has built-in protection against discharging the battery below 2.5 V and against charging with too high a current exceeding 3 A.