I'm at work and I don't have my SP2 with me. But, I'm going to have a look at my charger when I get home. I just read on the Microsoft Store that it offers an additional USB charging port. I didn't see that on my charger yesterday evening. Of course, I wasn't looking for it though because I didn't know it was meant to have existed.
Can anyone confirm whether your charger has a USB charging port on it?
yes mine has a usb charging port.