Wemos esp-wroom-02 ESP8266 D1 mini WIFI Module with 18650 Battery Case

Features:

With nodemcu.
18650 charging system integration.
Indication LED (green means full of red means · Charging) Charge and work can be done at the same time.
1 switch control power supply.
1 SMT connector available for sleep mode · 1 additional LED programmable (with gpio16 [do]).
0.5a charge current.
1A output.
Overcharge protection.
Over discharge protection.
10 digital pin read / write / interrupt / PWM / I2C / line support (except D0).
1 analog input to be careful + -.