Dual USB 5V 3A Power Bank Module can be use with 18650 3.7v Cell. It maybe use with any li-ion battery. Not only – but you can also easily make your own power bank using this Power Bank Module. It has battery level indication with in.

Features:

1.  Over Charging Protection
2.  over-discharge protection,
3. Besides, It is an intelligent output device after charging full
4.  Automatically stop charging. So, to prevent mobile phones overcharge.
5. The stable Output voltage. Moreover, it will not harm user devices.

Specifications:

1. Micro USB input: 5V 1A/2A
2. USB Output: 5V 3A (Dual USB interface)
3. Charging display: intelligent led level
4. Batteries Type: liquid lithium-ion batteries (18650) 3.7 lithium-ion battery
5. Product Size: 57mm x 28mm (approximately)
6. Screen size: 27mm x 17mm (approximately)

Installation instructions:

The circuit board is connect  to the battery negative B-, B + is positive. It should be noted that do not connect reversed. While connecting reversed will burn the board also the battery is connected in parallel, assembling the battery.  Note that the insulation between the battery and the circuit board, battery lead not to touch the circuit board, so as not to cause a short circuit.

Package included:

1 x Dual USB 5V 3A Power Bank Module