WeMos D1 ESP Wroom-02 Mother Board ESP8266 Mini WiFi Nodemcu Module 18650 Charging Battery Development Board Nodemcu PWMI2C | Nyereka Tech || STEM and IoT, Raspberry Pi and Sensors Store
Amazon.com: for WeMos D1 Mini ESP8266 WiFi Module with Battery Slot ESP- Wroom-02 Motherboard 18650 Charging Battery Development Board Compatible with NodeMCU : Electronics
Free 3D file Case for Wemos® D1 Esp-Wroom-02 Motherboard ESP8266 Mini-WiFi NodeMCU Module ESP8266+18650 Battery+0.96 OLED ・Template to download and 3D print・Cults