1. Safe Cell, No Exposion: 100% actual 3.7V high voltage working, 
Wide application. 
2. High/Low Temperature Adaption: -20 degree-60 degree Working Temperature: In cold environments -20 degree, it can still discharge 70%, high temperature storage up to 80 degree
3. Dual-Output, Universal Charger: Charge cell phone & other digital devices. 
DC 9V/12V/16V/19V muti spectrums voltage output, 
Designed for laptops. 
4.2 A input, high efficiency: Support 19V 2A input charge, reduce charging time, support large current's over charge/discharge
5. Long lifespan: Common power bank only be used 300-500 cycle times, 
But this one up to 800 cycle times, 
Energy saving & environmental protection. 
It can be used as normal two pieces.