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  • 240. Re: Can use ipad charger to charge iphone?
    Lawrence Finch Level 7 Level 7 (25,950 points)

    Thanks for that link, but I'm certain that there will still be people who won't believe it and who will believe it is a scam by Apple to shorten the life of iPhones so you have to buy a replacement.

     

    The same information in different forms has been posted many times in this thread, along with actual measurements (including one on video) showing that the iPhone draws the same amount of power from a 5 watt and 12 watt adapter. Yet there are still people who claim that the 12 watt charger charges the phone faster. How can it possibly do that if the input power is the same for both adapters (as clearly demonstrated in the video?)

     

    I've linked to the video yet again: http://www.youtube.com/watch?v=DC4gPxc89Wg

  • 241. Re: Can use ipad charger to charge iphone?
    iggypopbarker Level 1 Level 1 (0 points)

    Well, as I said somewhere around a billion posts ago.....I've been charging my iPhone 4 with my iPad charger for the last 5 years and 10 months, and the battery is still going strong.

     

    That is impressive. Especially as the iPad has only been released for just over three years.

     

    If anyone is interested in anymore anecdotal evidence, I've been using an iPad charger on an iPhone 4 and 4S for the last couple of years without any obvious detriment. Interestingly, my company BlackBerry Bold 9900 will only charge from a 1A plug, and refuses anything stronger (I can only assume it has a more fussy power management IC than Apple devices).

  • 242. Re: Can use ipad charger to charge iphone?
    gail from maine Level 6 Level 6 (11,610 points)

    Just seeing if anyone was paying attention....

     

    You will notice that you are the first one to actually catch it! No, actually, it was a typo....meant to put a 2 in there instead of a 5....

     

    On my numeric keypad, the 5 is right above the 2....

     

    Thanks for pointing that out!

     

    Cheers,

     

    GB

  • 243. Re: Can use ipad charger to charge iphone?
    cmb003 Level 1 Level 1 (0 points)

    Dear Lawrence, I have an iPad third-generation, and an iPhone 5. In searching for a couple of extra chargers for my iPad, I ran into this query about amps and voltage to charge both my iPhone and my iPad. I purchased my iPad on eBay and it came with the little cube that is typically used for iPhones. I had no idea that there was a difference in voltage on either device. I did notice when I charge up my iPad with the iPhone charger, it takes a day and a half to get a full 100% charge. I only stumbled upon the knowledge that there was a difference in voltage, because the generic wall chargers that I was looking at often stated that they would not support an iPad. Having read this several times from different vendors on eBay, I decided to Google that information and lo and behold, being just a uninformed woman, I realized that the iPad needed a stronger voltage charger. Who would've thought? But it made sense, because the iPad is so much larger than an iPhone, so my common sense kicked in. I ultimately found a dual charger in that one side supports an iPhone charge, and the other port supports an iPad charge. So I purchased it and when it came, I connected both units up and to my surprise and delight, the iPad charged so much faster than it originally had, when I had used the little cube. But I have noticed here on this forum, that your opinion is being challenged by another person who is knowledgable about electrical engineering, and that it doesn't matter that if you charge your iPhone on an iPad charger, it will not make a difference on the iPhone battery. Well my common sense tells me not to do that, because I have noticed the difference in the speed at which the iPad charges on the higher amp plug. It's kind of like putting regular octane gas in a car that requires high-octane gas. That car is going to knock like crazy because it's not running to capacity, and eventually, that 'damage' will ultimately cause permanent knocking within the motor, hence, lowering maximum engine output, but it won't completely ruin the motor. So why would anybody challenge a lower voltage iPhone with that higher voltage plug-in for an iPad that's just going to wear out your battery faster, not to mention what it might do to the device itself after repeated overuse? 

  • 244. Re: Can use ipad charger to charge iphone?
    tonefox Level 6 Level 6 (8,300 points)

    Sadly, after over 200 replies of various levels of lack of knowledge, I did not bother to read the wodge of  non-paragraphed response that you have posted. Just too much on a Friday evening. Perhaps you could repost bullet points?

  • 245. Re: Can use ipad charger to charge iphone?
    Michael Superczynski Level 5 Level 5 (7,455 points)

    You can use any iOS device's charger with any other iOS device.

    It won't hurt it or the battery.

  • 246. Re: Can use ipad charger to charge iphone?
    Lawrence Finch Level 7 Level 7 (25,950 points)

    You can use the iPad charger for the iPhone. They are both the same voltage. The iPad charger can supply more current than the iPhone charger, but each device only draws what it needs. The iPad can use up to 2.1 amps at 5 volts. The iPhone charger can supply only one amp. So the iPad will charge twice as fast with the iPad charger because the charger is capable of supplying that power. The iPhone will also draw what it needs, but that is 1 amp. Even if you put a charger capable of supplying 100 amps, the iPhone would still only take the 1 amp it needs.

     

    The video that has been posted many times demonstrates that: http://www.youtube.com/watch?v=DC4gPxc89Wg

     

    Apple says you can use an iPad charger with an iPhone: http://support.apple.com/kb/HT4060

     

    So unless you believe that Apple is lying so people will use iPad chargers with their iPhone and thus burn out the iPhone so they will have to buy new ones (the "tin foil hat" brigade?) you can safely charge your iPhone with an iPad charger. I would recommend that rather than buying a 3rd party product of unknown safety and capability.

  • 247. Re: Can use ipad charger to charge iphone?
    omega66 Level 1 Level 1 (0 points)

    I don't believe that you are still discussing this trivial matter for almost a year!

    The answer to this question is very simple.

     

    If the charging time using an ipad charger is shorter than the time you charge with an iPhone charger then the iPhone battery will short live!!

     

    And I still didn't make that test... so I can't tell for sure...but if somebody will test it, or if I'll find the time to test it, it would be nice to post the answer and finally end that saga!

  • 248. Re: Can use ipad charger to charge iphone?
    Lawrence Finch Level 7 Level 7 (25,950 points)

    omega66 wrote:

     

    I don't believe that you are still discussing this trivial matter for almost a year!

    The answer to this question is very simple.

     

    If the charging time using an ipad charger is shorter than the time you charge with an iPhone charger then the iPhone battery will short live!!

    Totally, completely wrong. You don't have a clue. And you haven't read the thread. As long as the charge rate is within the ratings of the battery fast charging will not shorten the life of a battery. But this is irrelevant, because the iPad charger does NOT charge the battery faster than the iPhone charger. I HAVE done tests with both, and also measured the temperature of the phone during charging with both. The charge time is about the same, and the temperature as MEASURED (not "it feels warmer") is about the same.

     

     

    And I still didn't make that test... so I can't tell for sure...but if somebody will test it, or if I'll find the time to test it, it would be nice to post the answer and finally end that saga!

    People have made the test, many times, and reported the results. The answer is that the iPhone battery can be charged with either the iPad charger or the iPhone charger. It makes no difference. As the video shows, the power going into the charger is exactly the same with either charger. If the power going in is the same with either charger it is impossible, unless the laws of physics are violated, for an iPad charger to charge the phone faster than an iPhone charger will charge it.

  • 249. Re: Can use ipad charger to charge iphone?
    modular747 Level 6 Level 6 (16,495 points)

    If you read this thread before posting,  you would know this has already been done and there is no difference in charging time or current. 

  • 250. Re: Can use ipad charger to charge iphone?
    Lawrence Finch Level 7 Level 7 (25,950 points)

    .

  • 251. Re: Can use ipad charger to charge iphone?
    tonefox Level 6 Level 6 (8,300 points)

    Lawrence Finch wrote:

     

    .

    And his silence is worth a thousand words....  

     

    If only we mere mortals could kill this ridiculously long thread! Never have there been such rantings from such a lacking of basic electronic  knowledge.

  • 252. Re: Can use ipad charger to charge iphone?
    modular747 Level 6 Level 6 (16,495 points)

    For some reason the hosts won't mercifully lock or kill this thread.  Maybe it's useful as flypaper for idiots.

  • 253. Re: Can use ipad charger to charge iphone?
    BlueBay Level 1 Level 1 (0 points)

    Would it not make more sense an Apple guru gives us a clear answer to support their products? Apple silence is already not a good sign...!

  • 254. Re: Can use ipad charger to charge iphone?
    modular747 Level 6 Level 6 (16,495 points)

    Didn't take long to prove my theory why this thread hasn't been killed!

     

    1. This is a user-to-user tech support site and Apple doesn't officially post in this forum!  You would know that if you bothered to read the Terms of  Use you agreed to when you joined.

     

    2. Apple has already unequivocally stated on their web site that the iPad charger can be used on iPhones.  How clearer can that get! You would know that if you bothered to read this thread before posting.

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