Can the iPhone be charged by USB?

Discussion in 'iPhone' started by mrsir2009, Oct 20, 2011.

  1. mrsir2009 macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #1
    Hi,

    Can the iPhone be charged via USB, as in plugging it into a computer's USB port and it charging that way. My current Samsung can, and I'm wondering if the iPhone can do it as well, as I'm upgrading sometime.

    Thanks!
     
  2. MadGoat macrumors 65816

    MadGoat

    Joined:
    Jul 30, 2007
    Location:
    Canada
    #3

    Yup, USB or USB wallplug
     
  3. UniPro macrumors regular

    UniPro

    Joined:
    Apr 23, 2009
    Location:
    Orange County, CA
    #4
    Yup. Not a problem. Although it will be somewhat slower than a direct plug in depending on your computers voltage output.
     
  4. mrsir2009 thread starter macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #5
    Cool, thanks. I get power-cuts frequently where I live, so I keep an old iBook G3 charged up so when there's a power cut I can charge my phone :)
     
  5. b24pgg macrumors 65816

    Joined:
    Jan 28, 2009
    Location:
    CA
    #6
    This. I learned this the hard way with my last smartphone's USB car charger which only had a 500mA output. If the battery was completely dead, the phone couldn't draw enough power to even boot up before dying again.

    Sooo I just bought a 2.1 amp USB cigarette lighter adapter for car charging.

    /tangent
     
  6. mrsir2009 thread starter macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #7
    Well, my iBook seems to produce enough power to charge my current phone. Do you reckon an iPhone would use much more power than a Samsung S5603 phone:

    [​IMG]
     
  7. b24pgg macrumors 65816

    Joined:
    Jan 28, 2009
    Location:
    CA
    #8
    No, even a 1000mA charger would be enough to charge the iPhone. It's just a question of charging as fast as possible, which is why I got the 2 amp charger.
     
  8. mrsir2009 thread starter macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #9
    I usually charge my phone overnight, which should be plenty of time to get the iPhone from empty to full, right?
     
  9. Mr Kram macrumors 68000

    Mr Kram

    Joined:
    Oct 1, 2008
    #10
    i don't know. charging rate seems to be the same whether it's usb, iPhone or iPad charger. it's relatively quick IMHO.
     
  10. b24pgg macrumors 65816

    Joined:
    Jan 28, 2009
    Location:
    CA
    #11
    Definitely
     
  11. mrsir2009 thread starter macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia

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