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.
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 50000mah power battery