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! Product Description:
This module is a portable mobile power supply that supports 3V / 1A and 5V / 2.2A two voltage outputs!
5V voltage output rated current is 2.2A, maximum support 3A current (not recommended for overload, easy to damage the module, speed up the service life), the output of current depends on the quality of the battery!

Package Included:
1X Dual Li-ion Battery Shield V8 3V1A 5V 3A Micro USB Power Bank Battery Charging Module for Raspberry Pi