How much faster is wall charger than USB?

Discussion in 'iPhone' started by Bill P., Jul 25, 2008.

  1. Bill P. macrumors regular

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    Sep 24, 2007
    #1
    I've heard that the wall charger is the quickest way to charge the iPhone. Is there a set percentage?
     
  2. SHIFTLife macrumors 6502

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    Jul 24, 2008
    #2
    There's really no difference, it's all personal perception. The wall charger puts out exactly 500ma, same as a powered USB port. I just tested it with a multimeter earlier today. It's going to charge just as fast on the wall outlet as it will on your USB port. :)
     
  3. QuarterSwede macrumors G3

    QuarterSwede

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    #3
    Good to know. Way to go the extra mile.
     
  4. MICHAELSD macrumors 68040

    MICHAELSD

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    #4
    Actually, the wall charger charges twice as fast. There was an app for jailbroken iPhones called "Battery", which gave you an exact reading of how much battery life was left, and if it was charging, how many mas it was getting. I got 500ma through USB on my computer and 1000ma through the power adapter, and it definitely charged a lot faster through the power adapter. I didn't test it on the iPhone 3G since there's no app like that available, but it definitely charges faster through the wall adapter.
     
  5. bep207 macrumors 6502

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    Jul 20, 2006
    #5
    why is it soo much faster?
    isnt USB 2.0 powerful?
     
  6. NeoMayhem macrumors 6502a

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  7. ivtecDOu macrumors 6502

    ivtecDOu

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  8. DiamondMac macrumors 68040

    DiamondMac

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    #8
    I actually do see a difference but it is only like 10-15 minutes quicker which isn't that big a deal for me

    Wall charger gets it up quicker (thats what she said) than a computer charger
     
  9. chinl macrumors member

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    Jul 20, 2008
    #9
    Bandwidth does not equal power (as in voltage or current).
     
  10. doobi18 macrumors 6502

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    Sydney, Australia
    #10
    also note that there are two generations of wall chargers: Firewire & USB

    i have never tested this but my general perception is that the wall-USB is the same as mac-USB, but that the wall-FW is faster than both of them
     
  11. ghettochild macrumors regular

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    Bay Area, CA
    #11
    Yea, I second that. I charge my iPhone with an old Firewire iPod charger and it's definitely faster than via USB on my Mac.
     
  12. tdhurst macrumors 68040

    tdhurst

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    #12
    as compared to what?
     
  13. marksman macrumors 603

    marksman

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    Jun 4, 2007
    #13
    On the original iphone I never used the USB to charge. It was painfully slow initially. So I always used the wall charger.

    I always use USB now because USB is much faster than it used to be on the original iPhone when it first came out.

    I think I got like 80% charge in like an hour early. Those numbers are a bit sketchy, but compared to it taking 8 hours to charge in the old days, it is much faster.
     
  14. imacdaddy macrumors 6502a

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    Feb 2, 2006
    #14
    Is your iPhone 2G? The iPhone 3G is not compatible with the older firewire iPod/iPhone 2G charger. FYI, the new iPhone 3G wall charger is using USB port so charging via the new charger and USB from mac/pc will draw the same power and will have the same charging time.
     
  15. doobi18 macrumors 6502

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    Dec 31, 2006
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    Sydney, Australia
    #15
    ahh negative.

    although both iphone ship with USB-wall chargers and will only sync with your computer over USB, they will both stil charge off an old iPod FW wall-charger.
     
  16. ghettochild macrumors regular

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    Bay Area, CA
    #16
    Yes.
     
  17. OllyW Moderator

    OllyW

    Staff Member

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    #17
    Wrong :p

    The new 3G iPhone doesn't charge with the old FireWire iPod charger.

    It also doesn't work with a large number of iPod accessories which use the 12V FW connections to charge. :mad:
     
  18. ivtecDOu macrumors 6502

    ivtecDOu

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    #18
    negative there is no such thing as a 2g iphone
     
  19. yogamonkey macrumors 6502

    yogamonkey

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    London
    #19
    Maybe it's placebo, but I always think the charge on my battery lasts longer after a 'wall charge' than a usb one.
     
  20. philgilder macrumors 68000

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    Sep 30, 2007
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    UK
    #20
    errrrr
    yeah there is
    [​IMG]
    thats the 2g iphone
     
  21. lakaiordie macrumors 65816

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    Jun 17, 2008
    #21
    my iphone charges with my 8gb nano sync cable.

    ???
     
  22. philgilder macrumors 68000

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    #22
    yeah... its a usb sync cable, so it can charge the iphone. same cable
     
  23. OllyW Moderator

    OllyW

    Staff Member

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    #23
    That's a USB cable, of course it works.
     
  24. lakaiordie macrumors 65816

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    Jun 17, 2008
    #24
    oh ok you were talking about the wallchargers for the older ipods nm.

    so, i could charge my nano w/ the wall plug for the 3g, correct?
     
  25. philgilder macrumors 68000

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    Sep 30, 2007
    Location:
    UK
    #25
    yes. the wall plug just converts the power to a usb port
     

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