5V 2.1A 3 USB Mobile Power Circuit Board Boost Module For DIY Power Bank Lithium Battery

Features:

 

- 3 USB charging interface for charging up to three mobile phones simultaneously

- Dual IC control, synchronous rectification, high conversion rate of 90%

- Advanced mass inductance, double tube rectifier performance

- Over discharge, over charge, overload protection circuit

- Automatically recognizes the output current of 5V1A or 2A according to the device

- Board size: 65x19x9mm

- Suitable for 3.7-4.2V rechargeable lithium batteries, such as mobile phone batteries, flat batteries, 18650 batteries, etc.

 

Note:

 

1. The first use requires Micro USB port to activate once.

2.Please note that when the lithium battery is connected incorrectly, the board will be damaged. Please check carefully.

 

Package Included:

 

1 x 3 USB Mobile Power Bank Module