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iPad Charging
Authored by: JPry on Feb 04, '11 09:02:04AM

Unfortunately, I do not remember exactly where I saw it, but I do recall this being reported on soon after the iPad was released. What actually happens is that the iPad will not charge when the display is turned on. So, every time you unlock the screen for any reason, or are able to see the screen, you will always see "Not Charging" (as long as you're not connected to a high enough power USB port). As long as the display is off, the iPad will actually charge, albeit not as quickly as with a high power USB or with the wall charger.

Still, it's good info for those who were not aware of it before.



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iPad Charging
Authored by: arizdave on Feb 04, '11 01:10:36PM

Here’s an interesting WTF

I have a newer 27” iMac and the HD partitioned with Mac OS 10.6.6 & the other partition with Windows 7 / bootcamp. The iPad (plugged into any USB port) ALWAYS shows “charging” the iPad on the Mac side no mather what program - including itunes sync, sleep/wake et al. But when I restart into the “Windows 7” still plugged into the same USB port the iPad ALWAY show as “NOT CHARGING”. go figure ???



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iPad Charging
Authored by: boxcarl on Feb 07, '11 11:36:23PM

The reason is that Windows doesn't understand it when the iPad sends a message to the computer saying, "Hey, I can use more than the standard amount of voltage in my USB port." Mac OS X does. It's nothing surprising when you consider that normally the voltage that high wouldn't be sent to a USB port for fear of frying the peripheral attached.



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