diymore 1865O Battery Holder Double Li-ion V8 Battery Shield Micro USB 5V/3A 3V/1A Power Bank Battery Charging Module for Raspberry Pi and Arduino ESP32 with 30CM USB Port line(2 Holders)
Supports up to two Li-ion batteries. It is recommended to use two 18650 batteries, which can be longer! The cell has to be 65mm.
Special attention: the installation of the battery must be determined positive and negative, the board has been clearly marked positive and negative! Installation errors will burn out the module!