iPad 2 not charging through USB

Discussion in 'iPad' started by Dr. McKay, Mar 14, 2012.

  1. Dr. McKay, Mar 14, 2012
    Last edited: Mar 14, 2012

    Dr. McKay macrumors 6502a

    Joined:
    Jan 20, 2010
    Location:
    Belgium, Europe
    #1
    I activated my refurb iPad 2 yesterday. When I connect it to iTunes via USB however, it says 'not charging', even though it's connected to a USB 2-hub with its own power supply.
    Is this normal ? Does this mean you can only connect it directly to a USB-port on the mac ?
     
  2. Azzin macrumors 68040

    Joined:
    Jun 23, 2010
    Location:
    London, England.
    #2
    Yes it's normal.

    I had an ASUS app that runs in my taskbar that turned on USB charging on my Windows PC (even though I didn't have an ASUS board).

    I'll see if I can find the download link for you.

    [Edit] - Found it: http://event.asus.com/mb/2010/ai_charger/

    Just install that, reboot and charge away.
     
  3. satchow macrumors 6502

    Joined:
    Jul 11, 2011
    #3
    Most PC USB ports don't pump out enough juice to charge the iPad. Recent Macs do though.
     
  4. Dr. McKay thread starter macrumors 6502a

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    Jan 20, 2010
    Location:
    Belgium, Europe
    #4
    I have an early 2008 24" iMac (2.8Ghz C2D). However, I connected the iPad to a powered hub, which I believed would provide enough power...
     
  5. deeddawg macrumors 603

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    Jun 14, 2010
    Location:
    US
    #5
    What happens when you connect it directly to the iMac?
     
  6. Dr. McKay thread starter macrumors 6502a

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    Belgium, Europe
    #6
    Haven't tried it yet. I'm at work now, I'll try tonight... :D
     
  7. billhelm macrumors regular

    Joined:
    Aug 1, 2010
    #7
    They often still charge even if "Not Charging" shows up, just more slowly. I can still fully charge my iPad 2 overnight off of the USB port on my 5 year old laptop.
     
  8. deeddawg macrumors 603

    Joined:
    Jun 14, 2010
    Location:
    US
    #8
    It's likely the hub only puts out 500mA max. I believe an iPad will charge from this if its asleep, but very slowly since it's 2.5 Watts at best.

    Many computer USB ports can switch to a 1A output, especially Macs, which matches the 5W capacity of an iPhone charger. Still going to be slower than the iPad's 10 Watt charger.

    https://discussions.apple.com/thread/2543338?start=0&tstart=0
    http://en.wikipedia.org/wiki/Universal_Serial_Bus#Charging_ports_and_accessory_charging_adapters
     
  9. poloponies macrumors 68030

    Joined:
    May 3, 2010
    #9
    "Powered" can mean a variety of things, it still needs to pump out enough juice to charge the iPad. The standard charger is 2A/10W, so unless your hub puts out at least that much (and you don't have other devices plugged in to reduce the draw) you'll be charging slower than expected.
     
  10. Dr. McKay thread starter macrumors 6502a

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    Jan 20, 2010
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    Belgium, Europe

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