All 3.7V-4.2V rechargeable lithium batteries, such as cell phone batteries, flat batteries, 18650 batteries and so on.It could be connected to a lithium battery can also be connected in multiple sections of lithium batteries Lithium positive pole connected B Lithium negative then B- 3 USB output, according to the device automatically recognize the output 5V1A or 2A current on the phone. Flat charge, you can also charge three mobile phone at the same time.

Specifications:

100% brand new and high quality.

Apply Battery Type: 18650 battery(not include).

Output Voltage: 5V 2.1A

Input Voltage: 5V 1A

Instructions: Level 4 Capacity indicator

Lighting: with LED lights

Rated Voltage: 3.7V ( Suit for 3.2V-4.2V. The batteries are in parallel)

Material: Electronic components

Color: Green

Note: All the cells that are connected to the power bank module should be in a Parallel, please don't connect the cells in series as this will damage the power back module and cause a heating issue in it and eventually the power bank module will stop working.

Size: 62×18×8mm/2.44×0.71×0.31in Quantity: 1 PC

Package includes:  1 X 3-Port USB Circuit Board

Product type: Electronic Modules