Coffee shop Power bank
Capacity:  20800mAh. 176000mAh. 16000mAh.                                                       
Input : DC 12V 2A
In All Output : DC 5V 8A  ( via 2 * 2.1A usb output ports + 1 * free 2.1A Micro cable line + 1 * free 2.1A Iphone 5/6 cable line ).
Power conversion rate: more than 85%
Charging time:5-6H.
Times of recharging circle: more than 500 times.                                     
Features: Free advertisment is workable to place on both side of the unit ,2 output USB port and 2 output usb line possible charging to 4 digital products at same time
Housing material:aluminum alloy+ABS
Weight:1000g.
Color:white
Product size:L130mm*W113mm*H40mm(Base) ; L197mm*W110mm*H46mm(Main unit)mm. 
With CE,Rohs,FCC certificates