I’ve seen numerous complaints today about the iPad not charging via USB, only via the power adapter. According to Apple:
Some USB 2.0 ports and accessories do not provide enough power to
charge iPad. When this occurs the message “Not Charging” appears
in the status bar next to the battery icon.
It works for me via the built-in USB ports on my MacBook Pro, but not via my USB hub. Apparently some Macs have built-in USB ports that aren’t “high power USB 2.0”, though.
Update: This is not a bug or error on Apple’s part. It’s a factor of just how strong the iPad battery is. It’s closer in watt-hour capacity to a MacBook Air battery than to an iPhone battery. More from Dan Frakes here.
★ Saturday, 3 April 2010