WEMOS ESP-WROOM-02 main board, D1 Mini WiFi Module, ESP8266 +18650 Battery Cover

– Same with NodeMCU.
– 18650 charging system integrated.
– indicate LED inside(Green means full& Red means charging)
– Charging and working could be at the same time.
– 1 Switch could control the power.
– 1 SMT connector could be used to sleep mode
– 0.5A charging current
– 1A output
– Over charge protection
– Over discharge protection
– 10 digital pins write/read/interrupt/pwm/I2C/one-wire supported(except D0)
– 1 analog input