Heltec ESP32 battery (what and where to buy)

[what2use]

I just purchased an ESP32 development board with OLED, Bluetooth and Wifi.
I would like to use this as a GPS logger for my RC cars so it would need to run on battery power

I noticed the board has a connector for a 3.7V battery.

Does anyone know where these batteries can be purchased?

Thanks

[lbernstone]

Unless your board includes charging equipment, it is probably dangerous to use the battery connector. 3.7V lipo batteries can be easily found on almost any online marketplace- amazon, aliexpress, gearbest, banggood.