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)
Battery Holder
 
Product Features
  

         
Supports 3V 1A voltage outputs.
         
Supports 5V 2.2A voltage outputs.
         
Micro USB charging current is 600mA-800mA.
         
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!