I bought this product for charge my cellphone on the beach or traveling at the car or bus.
I tested with my cellphone, a SE w580 at 50% of charge, With the default charge, I connect the usb adapter and the SE connector and works!, I could charge the cellphone at 96% battery in 1.30 hours!. That it''s great!
If you think in buy this product, you should buy it. Works fine with any device that charges via usb. Includes a lot of adaptor for any devices, this is a good purchase
I bought that for my parent and it''s really simple use it. I charged for 2 hours with the included charger (110/220V) without problems. I readed the manual and in few minutes I could connect fine with my Dell Studio XPS 13, my SE w810, my SE c510 and my SE w580!!!, Really fast and simple!.