Apple patents are strange and mysterious things. Like sums over futures, they give us a peek at thousands of strands of potentiality, but no clue about eventuality. In other words, Apple patents tons of stuff, most of which we never see in actual consumer products. Some of these, however, are pretty interesting looking. The Register says:
One of the applications describes a "host machine" - looking much like an iMac in the accompanying drawings - that has battery-charging slots built into its body.