Charging iphone 5 with 10W ipad charger

Discussion in 'iPhone' started by metsjetsfan, Sep 25, 2012.

  1. metsjetsfan macrumors 65816

    Feb 2, 2011
    Has anyone tried this yet is it even faster? with the 5 Watt it seems to be about 1:45-2:00 hrs to fully charge from <10%. Hard to beat, is it faster with 10W charger?
  2. PrestonWard macrumors member

    Jul 30, 2012
    yes it is faster.
  3. forza1976 macrumors regular

    Sep 28, 2007
    Denver CO
    I do this all the time with the 10 watt for my iPad. It sure seems like it charges faster...
  4. nuckinfutz macrumors 603


    Jul 3, 2002
    Middle Earth
    Been charging my iPhone with the iPad charger with no issue for years. It's noticeably faster.
  5. Fidget08 macrumors regular


    Jun 14, 2010
    Been charging with my macbook pro charger for damn near 5 years. Charges my phone is 10 minutes! Its a breeze!
  6. RyanTheGeneral macrumors regular

    Sep 10, 2009
    Have not yet with 5. But did it with the 4s. Charges a lot faster
  7. forty2j macrumors 68030


    Jul 11, 2008
    Does doesn't have a long term impact on battery life?
  8. GoCubsGo macrumors Nehalem


    Feb 19, 2005
    If it does I don't sense it in the iP4s.

    Does doesn't it ... it that a double negative? :D
  9. forty2j macrumors 68030


    Jul 11, 2008
    The question was not fully formed in my brain when my fingers sent it forward.. happens often. :D
  10. ipoddin macrumors 6502a


    Jan 6, 2004
    Los Angeles
    What is long term for an iPhone? One year or two year life cycle you'll have this phone? Used it all the time with 4S, no issues.
  11. yanki01 macrumors 68040


    Feb 28, 2009
  12. antirice macrumors newbie

    Jul 26, 2012
    There is long term effects. The battery is being charged with a current much greater than the battery itself. It will charge much faster. But it deteriorate the battery and can heat up the battery.
  13. pragmatous macrumors 65816

    May 23, 2012
    By the time the battery is damaged you'll be long over due for a new phone anyway.

  14. mainomega macrumors 6502

    Jun 5, 2007
    Yea, have my standard 5W chargers on the night stands to charge overnight but I keep the iPad chargers (10W) on the first floor and by the kitchen for a much faster boost. Usually will charge atleast 50% in about 15-20 mins
  15. x986 macrumors regular

    Sep 12, 2008
    What's the amperage on these 10W chargers?


    What's the amperage on these 10V chargers?
  16. Rocko1 macrumors 68020


    Nov 3, 2011
    Wrong. The phone regulates the current into the battery. It will not harm it.
  17. bjornm macrumors member

    Jun 20, 2008
    The 10 W charger is officially compatible with iPhones so I doubt there are long term effects.
  18. bitslap47 macrumors 6502a


    Jul 9, 2007
    Current can only be drawn, it is not pushed.

    Voltage is pushed, not drawn.

    Volume (current)
    Pressure (voltage)

    No more current will be used than is usable. Water isn't sucked through a hose when the end is wide open.

    Watts is a power rating, which is:
    Power (Watts) = Voltage (volts) X Current (amps)

    So a 5 watt adapter can supply .5 amps at 10 volts.

    A 10 watt can supply 1 amp at 10 volts.

    The advantage you are probably seeing is that the phone may be able to use/draw .52 amps or 5.2 Watts to charge.

    So the iPad charger would, in theory provide a 4% advantage since the 5 watt adapter would be clamped to .5 amps since it can only dissipate 5 watts of heat safely.
  19. Mercenary macrumors 6502a

    Sep 17, 2012
    You can use it and NO, IT IS NOT FASTER!

    The iPhone will only draw as much as needed.

    I put it to the test. My wife's phone which had turned off at 0% on the iPad charger and my phone at 0% on the iPhone charger. Both charged at the same rate and reached full charge at the same time.
  20. frozzbite macrumors member

    Mar 10, 2011
    I thought the increased speed was psychological as well. So I did a similar test to you and my iPhone did charge faster. Not by very much though.

    2 independent occasions, same iPhone 5:
    In the same time from 0%, 10W charger gave me 13%, 5W charger gave me 11%.

    On a separate note,
    - my iPad charges faster when I use the Griffin 3 Metre cable.
    - iPhone charges slower when using third party $5 cables (iphone 4)
  21. Rocko1 macrumors 68020


    Nov 3, 2011
    Right, it will. We don't have the specs on what it can draw SOOOO if the phone can draw a max 1.3amps and the normal iphone charger only can deliver 1amp, the iPad charger will charge it faster as it delivers close to 2amps.
  22. Menel macrumors 603


    Aug 4, 2011
    It will work.

    It won't degrade battery, does it degrade the iPad's battery? Simple uneducated reason could have deduced this, no EE background needed.

    iPhone has to be designed to accept the additional current available, it may or may not. It's never felt faster to me on the iPad charger, but iPhone charges fast to me even on the regular charger. *shrug*
  23. Hankster, Oct 30, 2012
    Last edited: Oct 30, 2012

    Hankster macrumors 68020


    Jan 30, 2008
    Washington DC
    100% incorrect. Please post any proof of this assumption. It's 100% incorrect. Some posters here are worse than politicians, everything they assume is fact.

    Have to 100% disagree if you're saying the iPad charger is not faster than the iPhone charger. My family has several iPads and iPhones. I can say with 100% certainty that when I charge my iPhone with my iPad charger is recharges much faster than when I use my iPhone charger.

    Case in Point: The other night my iPhone was at 20% and I used my iPad charger. In less than 15 minutes my iPhone was over 50%. In 15 more minutes it was almost at 100%. Most nights I charge my iPhone with my iPhone charger and it takes about 45-60 minutes to get a full charge. With my iPad charger my iPhone is at 100% in about 30 minutes. I have done this so many times with my iPhone and my wife's iPhone.
  24. KeepCalmPeople macrumors 65816


    Sep 5, 2012
    San Francisco Bay Area, California
    Agreed. The cable you use can impact the charge rate significantly. My wife has an iPad 3 and we bought some cheap 6ft cables. It barely charges using a cheap cable and the 10W charger - she has to use the Apple 3ft cable to get the lightning bolt in her battery indicator.

    I think iPhones can draw more than 1 amp, but do not draw the full 2 amps available from the 10W charger.

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