5v 1/2.1a USB DC-DC Boost Converter Charging Step up Power Bank PCB Module

Power Bank Charging Module  Over Charging Protection  over-discharge protection, Besides, It is an intelligent output device after charging full  Automatically stop charging. So, to prevent mobile phones overcharge. The stable Output voltage. Moreover, it will not harm user devices. This is the mobile power module Accessories, 18650 Circuit board shell. Meet the individual needs of your DIY, but you must understand basic electronic assembly. Power Bank Kit Power Bank Charging Module Motherboard comes with protection function: Charging overcharge protection, over-discharge protection, overcurrent protection. Intelligent output device after charging full, automatically stop charging, to prevent mobile phones overcharge. Output voltage and current stable, will not harm user devices. The circuit board is connected to the battery negative B-, B is the positive, do not connecting 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. Power Bank Charging Module Specifications: Micro USB input: 5V 1A/2A USB Output: 5V 2A (Dual USB interface) Charging display: intelligent led level Batteries Type: liquid lithium-ion batteries (18650) 3.7 lithium-ion battery 4-level LED lamp display power, not working state intelligent automatic shutdown; The built-in lithium battery protection IC, over-current, overpressure, under voltage protection; Dual USB output ports. Dimensions: 68 x 34 x 9 mm (LxWxH) Weight: 10 gm Input port: Micro USB Input requirements: 5V constant voltage power supply can do charge input power, the most matching charger for 5V 1A above Output port: USB Output parameters: 5V1A/5V2A Requirements for rechargeable batteries: Compatible Batteries: 18650 batteries, cell phone batteries, flat-panel batteries, MP3 batteries, etc. 3.7v-4.2V polymer Lithium battery, en.wikipedia.org This is the mobile power module Accessories, 18650 Circuit board shell Power Bank Kit. Meet the individual needs of your DIY, but you must understand basic electronic assembly. Motherboard comes with protection function: Charging overcharge protection, over-discharge protection, overcurrent protection. Intelligent output device after charging full, automatically stop charging, to prevent mobile phones overcharge. Output voltage and current stable, will not harm user devices.