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
MakerFocus Wemos D1 Mini WiFi Module with 18650 Battery Slot ESP WROOM
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