18650 2xUSB 5V 2.1A 1A LCD Power Bank Module Arduino

The Power Bank module is used to build a portable power supply that allows you to charge phones / tablets, etc., it is enough to connect a Li-Po, Li-Ion 1S (3.7V) battery to the B + and B- pins. The module has been equipped with an LCD display informing about the charging status and providing many other information. The module has 2 outputs - USB sockets and one Micro USB socket (for charging), with over-current and voltage protection. An additional advantage is the protection against excessive discharge of the power bank - when the current drawn from the socket is minimal, the module disconnects the USB output. It is not possible to charge a power bank and an external USB device simultaneously. Preparing the module for operation is simple, just solder the battery connector to pins B + and B-. The created power bank should be secured and stiffened with a heat-shrinkable jacket.

Specification:
- Micro USB input: 5V 1A
- USB type A output: 5V 2.1A / 5V 1A (Dual USB interface)
- display informing about the state of charge
- PCB dimensions: 57mm x 28mm
- screen dimensions: 27mm x 17mm