What's best for the battery USB or wall socket charge?

Discussion in 'iPhone' started by Haziza, Oct 5, 2014.

  1. Haziza macrumors member

    Haziza

    Joined:
    Jun 23, 2010
    Location:
    Sweden
    #1
    Is there any difference between charging via usb or wall socket?
    I know that the wall socket is a lot faster but dose the battery benefit from charging slower via usb ports maybe?

    I have the new Iphone 6 and i wanna keep this precious phone perfect! :)
     
  2. MassiveAttack macrumors 6502a

    Joined:
    Mar 28, 2010
    Location:
    New York
    #2
    You should never charge via USB unless there's no other way to charge your phone.
     
  3. jjp007 macrumors regular

    jjp007

    Joined:
    Sep 23, 2009
    Location:
    TexASS
    #3
    Can you explain why?
     
  4. ToroidalZeus macrumors 68020

    ToroidalZeus

    Joined:
    Dec 8, 2009
    #4
    An Apple PC with USB 3.0 ports or any 2.1 amp charger like an iPad charger will give you a faster recharge rate but theoretically would reduce the battery life. (but it would be so minimal that it's not really worth stressing about)
     
  5. supersalo macrumors 6502

    supersalo

    Joined:
    May 14, 2010
    #5
    Sorry, but this is 100% wrong. AC chargers don't "push" electricity. The device being charged draws it. So if the power source can supply a higher current, they will recharge faster. That's why recharging via the tiny 5W charger takes longer than the 12W iPad charger. The 12W can supply more current.

    This has no effect on the health of your battery.
     
  6. ToroidalZeus macrumors 68020

    ToroidalZeus

    Joined:
    Dec 8, 2009
    #6
    ya it does, slower recharge prolongs the battery life over the years.
     
  7. Max(IT) Suspended

    Max(IT)

    Joined:
    Dec 8, 2009
    Location:
    Italy
    #7
    I'd suggest to use the wall socket because you are going to let the Apple charger do the job, and it's a quite high quality component. But if you need to charge via usb from time to time, it's absolutely fine and it won't influence the battery life.
     
  8. Mr. Buzzcut macrumors 65816

    Mr. Buzzcut

    Joined:
    Jul 25, 2011
    Location:
    Ohio
    #8
    Is this a trick question? They are both USB. What is meant by "USB" when not speaking of the wall charger?
     
  9. supersalo macrumors 6502

    supersalo

    Joined:
    May 14, 2010
    #9
    I'm not going to get into a forum pissing match over this, but that is completely inaccurate.

    Look at Apple's battery page:

    "Your Apple lithium-ion battery uses fast charging to quickly reach 80% of its capacity, then switches to slower trickle charging. The amount of time it takes to reach that first 80% will vary depending on your settings and which device you’re charging. This combined process not only lets you get out and about sooner, it also extends the lifespan of your battery."

    Using a 12 watt charger or a 5 watt charger makes NO difference. The battery will charge as fast as it can depending on how much current is being supplied to it.
     
  10. davidgnomo macrumors 6502a

    davidgnomo

    Joined:
    Feb 16, 2012
    Location:
    Imola (BO) - Italy
    #10
    I've always used my Uspeed 7-port USB 3.0 HUB (which is connected to the iMac) and the USB 2.0 on a pc at work to charge my iPhone 5 and it still works perfectly fine ... I must have lost the wall socket, I don't even know where is it anymore ... :p
     
  11. eelw macrumors 6502a

    eelw

    Joined:
    Sep 19, 2012
    #11
    Batteries in general, it's better to use a lower amperage whenever possible. This reduces heat produced. But the difference in overheating from 0.5, to 1 or 2A isn't going to affect the iPhone battery enough over its lifetime. Just use which ever is more convenient.
     

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