Dual USB 5V 1A 2.1A PCB Power Module with LCD

This is the Dual USB 5V 1A 2.1A Digital LCD 18650 Lithium Battery Charging Module Accessories, 18650 Circuit board shell.
Meet the individual needs of your DIY, but you must understand basic electronic assembly. The motherboard comes with protection Charging, overcharge protection, over-discharge protection, and overcurrent protection. An intelligent output device after charging full, automatically stop charging, to prevent mobile phones overcharge. Output voltage and current stable, will not harm user devices.

Note:The circuit board is connected to the battery negative B-, B + is positive, do not connect reversed, connecting reversed will burn the board, the battery is connected in parallel welding, assembling 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.