1.This product have six adjustable voltage and can charge digital divices for 5v, 8.4v, 9v, 12v, 16v,(compatible 16.5v),20v(compatible 19v,19.5v).
2.When charging for laptops, first, you press the bottom for two seconds, then you double click on the bottom to adjust the voltage to what laptops need and it can start charging
3.Usb1, usb2 outports can charge digital devices with 5v, 9v, 12v, and support quick charge.
4.Type-c output charges 5v,9v,12v digital devices with type-c output.(support charge to usb-c input macbook)
5. All outputs of this product like dc-out,usb1,usb2,type-c can charge several devices like laptop, tablet, cell phone simultaneously.
6.Charge for the power battery
connect the charger with the dc input port,the other side connect to the adapter.The digital screen showing 100% means it is full charged.
7.Charge for your usb device
press the button for 2 seconds to start up,connect the usb cable with output port,it will start charging your devices