Sell Dual USB 5V 1A 2.1A Mobile Power Bank 18650 Battery Charger PCB Module Board best price

Features: * This is the mobile power module Accessories, 18650 Circuit board shell. * 100% brand new and high quality * 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, over-current 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. Specifications: * Micro USB input: 5V 1A * USB Output: 5V 2.1A / 5V 1A(Dual USB interface) * Charging display: intelligent digital display * Batteries Type: liquid lithium-ion batteries (18650) * Product Dimensions: 57* 28mm(approx) * Screen Dimensions: 27* 17mm(approx) Installation: 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. Package contents: 1*PCBA Motherboard(Case is not included) Note: 1. 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. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness