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iPad charged by USB (PC or Mac)

8731 Views 5 Replies Latest reply: Mar 25, 2012 4:39 PM by phoneuser RSS
phoneuser Calculating status...
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Mar 24, 2012 2:56 PM

hi, is it per apple standand that the new ipad can NOT be changed by an usb port?  I tried the usb port from two different desktop PCs and neither of them worked (showing 'not changing'). but it works on my macbook (not the pro) even when the macbook is on its battery power. 

  • stedman1 Level 8 Level 8 (49,815 points)
    Currently Being Moderated
    Mar 24, 2012 2:59 PM (in response to phoneuser)

    Not really an Apple standard. More of a USB standard, as most computers do not provide the current required to charge the iPad at an acceptable rate. The iPad may charge, but at a much slower rate.



  • Johnathan Burger Level 6 Level 6 (14,440 points)
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    Mar 24, 2012 3:02 PM (in response to phoneuser)

    Your pc's don't have hi-power USB ports, your Mac does.

    iPad requires more power than a standard USB port puts out.

  • Texas Mac Man Level 8 Level 8 (44,210 points)
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    Mar 24, 2012 4:02 PM (in response to phoneuser)

    The quickest way (and really the only way) to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.


    Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.


    At this link,3014-11.html , tests show that the iPad 2 battery will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery, so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night.


     Cheers, Tom


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