Ipad 2 charging extremely slow

Discussion in 'iPad' started by richard371, Mar 12, 2011.

  1. macrumors 65816

    Feb 1, 2008
    Ive had my ipad 2 plugged into my imac 24 for 2 hours now and it has gone from about 60% to about 80% this seems extremely slow.
  2. macrumors member

    Jun 24, 2010
    Use the wall charger. Don't charge using a computer. This was a common problem with the 1st gen iPad.
  3. thread starter macrumors 65816

    Feb 1, 2008
    I tried the charger it came with and it went from 87-89 percent in 10 mins. So it will take 500 mins to charge from 0?
  4. Mystikal, Mar 12, 2011
    Last edited: Mar 18, 2011

    macrumors 68020


    Oct 4, 2007
    Irvine, CA
    This is why I dont have the battery % disabled on any product. It makes you way too paranoid and think something is wrong.
  5. macrumors regular

    Jul 12, 2008
    The first 80% charges quick then the last 20% trickle charges so that's what yours took 10 minutes to go 2% because your above 80%
  6. macrumors member

    Feb 26, 2009
    Mine is charging really slowly, too. Using the supplied 10W adaptor and cable, plugged directly into the wall. And I'm at 54% right now, so it's not the trickle theory.
  7. Next Tuesday, Mar 12, 2011
    Last edited: Mar 12, 2011

    macrumors 6502a

    Next Tuesday

    Sep 14, 2006
    I drained my battery completely overnight. I plugged it in 3 hours ago and its only at 31%. Thats pretty slow if you ask me. Im using the charger that came with the ipad plugged into the wall. a
  8. macrumors 6502


    Jun 22, 2010
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

    The first time you get an iPad, don't charge it, let it fall below 10% and then charge it.

    This guarantees a better battery (and has been proven)

    After that, charge via wall for 10 full hours, then use it. It should last like 2 days before you will have to charge it again with heavy use on 50% brightness.

    Never let an iPad battery go below 20% before charing it.

    Do this with all iDevices to maximize battery life.
  9. macrumors 6502

    Apr 30, 2010
    Palo Alto Apple Store
    Welcome to the opacity.
  10. macrumors 68040

    Apr 22, 2005
    What is the point of "maximizing battery life" if you are limiting yourself to only using 80% of its capacity right off the bat?
  11. macrumors 6502a


    May 20, 2009
    London, UK
    A lot of USB ports are not powerful enough to charge the iPad. Advice is to use the wall charger, or if thats not possible try changing the USB port you are using. One of the ports on my MB charge the iPad and the other doesn't so it's worth moving it around to see if it makes a difference.
  12. macrumors 68030

    May 3, 2010
    None of that makes sense:

  13. macrumors newbie

    Jun 1, 2010
    Did you mean below, not above?

    If so, are you supposed to charge them before they reach low battery to get the best out of it?
  14. macrumors 6502a

    Jan 12, 2010
    No. Batteries charge quickly up to 80%, and then it slows down a lot.
  15. macrumors member


    Feb 17, 2011
    everything is fine here, are you trying to charge in a hub?
  16. macrumors member

    Feb 26, 2009
    Where did you read this?
  17. macrumors 6502a


    Jul 29, 2006

    Me too!
  18. macrumors 68000


    Feb 16, 2009
    Tell me where you heard this and who "proved" it.
  19. macrumors 604


    Jun 30, 2007
    Here is the way to look at it. Charging an iPhone is like fueling up a MINI. Small tank is quick to fill. The iPad has fuel tanks (BIG batteries) like a large truck. Using the same size hose it takes a LOT longer to fill up. The charger that comes with the iPad has a larger "hose" but it still a gigantic tank to fill.
  20. macrumors 68020

    Aug 29, 2003
    Toronto, Canada
    This is completely false. Don't make up claims like "its been proven" when it clearly hasn't.

    It's true for devices with nickel-based batteries, but none of Apple's iOS devices have ever had a nickel-based battery. With lithium polymer batteries, keeping them charged as much as possible is the best way to maintain battery life. Running them down can cause damage and shorten battery life. See more straight from Apple here: http://www.apple.com/batteries/
  21. macrumors 68030

    Apr 10, 2003
    A hot desert
    I'm using the wall adaptor and I definitely consider the iPad 2 to charge slower than the first.

    Wit...guess I better check it's not plugged into the iPhone charger.,,...it's not.

    Very slow charging it seems. Hmm
  22. macrumors 68000


    Jul 2, 2009
    Agreed. The iPad has a 25 watt hour battery. It will take a little longer than say an iPhone to charge. always use the 10 watt wall charger to decrease charging times.
  23. macrumors newbie

    Mar 18, 2011
    All about the adapter

    I picked up a small USB volt/amp meter on Meritline that goes inline between the power adapter and the iWhatever (or any USB device actually).

    I found that on my MBP USB ports charging an iPad 2 I get about 400mA charging at any level of battery. From the supplied adapter it charges at about 900 mA.

    The charging still takes awhile, but it is CLEARLY dependent on what you plug it into to charge it.
  24. macrumors 6502

    Jun 13, 2009
    I charge it using my mbp charger and it's damn fast.
  25. macrumors 68020


    Jul 28, 2008
    Bad advice. Apple says to fully discharge once per month.

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