Can I use an iPhone 4S USB power adapter with an iPhone 5S? I have an iPhone 4S, and I am thinking about upgrading to an iPhone 5S.  I know that the iPhone 5S has the new Lightning connector, so I will have to get new cables.  But what about the USB power adapter?  Can I use the iPhone 4S USB power adapter with the iPhone 5S?

I found an Apple page that discusses their iPhone 4S USB power adapter, and they do not mention the iPhone 5S, so I'm not sure if it is compatible with the iPhone 5S:
yes, they are both 5w chargers.