what doesn't my iPad charge when its plug into the computer?

Discussion in 'iPad' started by ben173, Jun 15, 2011.

  1. macrumors regular

    Joined:
    Jun 8, 2011
  2. macrumors 601

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    Jun 29, 2010
    #2
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8G4 Safari/6533.18.5)

    Its not like a iPhone and needs more power hence the bigger adapter. If you have it plugged into a computer it will charge very slowly, only if asleep and you aren't using it.
     
  3. macrumors 68020

    Blorzoga

    Joined:
    May 21, 2010
    #3
    It does charge but very slowly. The USB from your computer does not put out enough juice to charge it as quickly as the wall charger.
     
  4. thread starter macrumors regular

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    Jun 8, 2011
    #4
    my iPhone has a different charger then the iPad but i use my iPhone charger for my iPad is that bad for it?
     
  5. macrumors 6502a

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    Mar 8, 2011
    #5
    When the screen is off, it will charge the iPad, but VEEEEEEERY slowly
     
  6. macrumors 65816

    BlindMellon

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    Apr 4, 2011
    #6
    Might shorten the life of your charger, but it shouldn't hurt the iPad. That, and it will take forever to charge.
     
  7. macrumors 6502a

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    Nov 11, 2009
    Location:
    The Netherlands
    #7
    Why would you risk it?
     
  8. macrumors 68030

    Mlrollin91

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    Nov 20, 2008
    Location:
    Ventura
    #8
    I believe because the USB port you are using is a low power one. I don't have problems with my computer, charges fine, slower than outlet of course but not terrible.
     
  9. macrumors 68030

    HazyCloud

    Joined:
    Jun 30, 2010
    #9
    This will make it charge. It works flawlessly on my Win 7 machine.

     
  10. macrumors demi-god

    Joined:
    Apr 20, 2009
    Location:
    NY
    #10
    Puleeze.... The iPad needs one amp for charging properly. The standard USB port is rated at half an Amp. Why risk damage by overloading the USB port?? Even if some silly software can make it work?? :eek:

    Use the right charger. :cool:
     
  11. macrumors 6502a

    Ashin

    Joined:
    Jun 19, 2010
    #11
    iPhone charges slow enough via USB compared to on the wall, I think the iPad would take far too long even if it did charge through USB
     
  12. macrumors 68030

    HazyCloud

    Joined:
    Jun 30, 2010
    #12

    I never though of it like that. Good point.
     
  13. macrumors newbie

    Joined:
    Jun 18, 2011
    #13
    Most computers won't charge it but macs will. My MacBook air is what I use to charge my iPad 2 and it charges fully from near 0% in about 2 hours or les I'd guess. I'll have to let you know when I run it dead tonight. I'm at 78% now so I'm no where near dead, lol.

    I guess you need to go out and buy a mac. Darn right? Haha!
     
  14. macrumors member

    Joined:
    Jun 20, 2011
    #14
    Lmao if they set the max to .5 A why would they put it there if it could damage your port??

    It doesn't charge because your mobo doesn't allow for greater power draws. More expensive motherboards allow for 1A to be drawn, charging the iPad. Like my pc. Why do you care anyway? Lost your iPad charger? Just buy any 5V adapter. Just make sure it puts out 1A or more.

    iPad wants 2A. You can use anything less or anything more thn 2A. Just make sure it's the same voltage.
     
  15. macrumors 604

    chrono1081

    Joined:
    Jan 26, 2008
    Location:
    Isla Nublar
    #15
    If you are on a Windows machine there is a good chance the USB port isn't powerful enough to charge it. This was a BIG fiasco at work when the iPad was introduced. Employees were trying to charge them via the HPs and Dells we had and they wouldn't charge.

    However, that being said many machines had a fix released that would allow more power to the USB (I forget the specifics but if I remember correctly Asus had an article about it on their website which is how I learned about all of it).

    Your computers website may have the information, but if not your motherboard manufacturers should.
     
  16. macrumors 6502

    Joined:
    Jun 29, 2009
    Location:
    US
    #16
    Each USB port is suppose to support up to 0.5A. Some manufacturers try to skimp by multiplexing multiple external USB ports onto one USB slot on the motherboard. Essentially 0.5A ends up being divided among the multiplexed ports. Normally most devices like USB drives and card readers don't draw that much current, so you can use multiple of them simultaneously and not have problems. However with the iPad, it needs at minimum 0.5A. So if you want to charge the iPad, then you'll have to disconnect other devices plugged into these multiplexed ports.

    It is also the same reason why external USB hubs without an external AC adapter doesn't charge the iPad either.
     

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