The POD all in one USB cable can charge most of your USB electronics, this 7 inch adapter includes the items for the most comon phones on the market .

Snap in the POD versatile Surface book cable adapter, made
for Surface Book, Surface Pro 3 and Surface Pro 4.   Now never run out of power again, just connect the surace cable and seclect the 12V output on your POD-X5/x5 or x4 squared and quickly you are back to work, designed
to match the look and feel of your Surface this cable is a just have for all surface owners.