FancyWhoop 1865O Battery Holder for Raspberry Pi and Arduino ESP32, Double Li-ion V8 Power Bank Holder Support Micro USB 5V/3A 3V/1A V8 Battery Shield, with 30CM USB Port Line (4 Holders)
Supports 5VI3A 3VI1A Power Bank Battery Charging Module
Micro USB charging current is 600mA- 800mA
Supports up to four lithium-ion batteries. Suggest using 4 18650 batteries, which can last longer! The battery must be 65mm
The operating temperature of the 18650 module is -20℃ to 70℃, and the conversion efficiency is up to 95%.
Special attention: The installation of the battery must determine the positive and negative poles, which are marked on the board! Installation errors can burn out modules