Power Bank Module Dual USB 5V 2.1A with Voltage Display and LED AA312

Power Bank 18650 Battery Charger Module with display Dual USB 5V 1A, 2.1A. It comes with protection function: Charging overcharge protection, over-discharge protection, overcurrent protection. 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, 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. Technical Specifications: USB Output: 5V 2.1A / 5V 1A(Dual USB interface) Charging display: intelligent digital display Batteries Type: liquid lithium-ion batteries (18650) 3.7 lithium-ion batteries only Protection circuit: Overcharge protection: 4.250V Overcharge protection release: 4.100V Protection circuit: Over-discharge protection: 2.900V Over-discharge protection release: 3.000V Idle time before LCD switch off: 60secs. Package Includes: 1 Piece- Dual USB 5V 2.1A Power Bank Module with Voltage Display and LED AA312