1 2 Previous Next 17 Replies Latest reply: Sep 3, 2012 4:43 AM by ejz
bhsummer Level 1 Level 1 (0 points)

I have an iPad 2, and I restored the content on an iPad 3.  The thing is, the iPad battery runs down when not in use.  For example, I had it fully charged and in a bag all day.  Opened for first time 12 hours later, and it was down to 90%.   Same thing at night... Drops about 1% per hour. 

 

My iPad 2 doesn't do this.  I don't have cell data on, I disabled push email.  I tried removing all unneeded notifications.  I tries running the battery down a couple times to recalibrate the battery.  No luck.

 

I get that the new iPad needs more power for the graphics and screen, but this is usage when all that is off.  I would think with a bigger battery, standby time would be equal or greater then my iPad 2. 

 

Any suggestions?  Thanks!


iPad, iOS 5.1
  • 1. Re: iPad 3 battery running down
    Demo Level 9 Level 9 (76,365 points)

    I use my new iPad all day long at work and it almost never goes to sleep and I easily get 10 hours or more out of the battery every day. I charge the iPad every night as well. No matter what the battery level, I charge to battery so I can't comment on how much the battery drops when the iPad is asleep all night.

     

    So my first suggestion would be - charge the battery every night since this will not hurt the battery and you will have a full charge every day when you begin using the iPad. Then see how long the battery lasts when you use the device all day long. If you get at least 10 hours, then you are OK. If you aren't getting that kind of usage out of the battery, then you might have a problem?

     

    My point is that I would judge the battery more on how long a full charge will last rather than how much the battery drops overnight while it is asleep. And that can be prevented anyway, by simply charging the battery every night.

  • 2. Re: iPad 3 battery running down
    bhsummer Level 1 Level 1 (0 points)

    I get what your saying.  In this case, the battery percentage drops consistently.  So, if it loses 10% life over 10 hours on standby, that's about an hour of actual usage I am losing.  Charging at night is possible, but I'm also talking about having it in a bag for 8 or 10 hours and then pulling it out to find it lost 10% ... It's disappointing and it shouldn't lose that much in standby ... My iPad 2 certainly doesn't and it is set up identically.  As I said, I would expect longer standby time if the screen is always off. Might need to try another one.

  • 3. Re: iPad 3 battery running down
    Demo Level 9 Level 9 (76,365 points)

    I am not really stating that your iPad should drain the battery this way. Like I said, I haven't experienced that yet. Frankly, that does seem a bit excessive to drain 10% while it is asleep - over an 8 hour period.

     

    I know that I could put my iPad one to sleep with a full 100% charge and when I would wake it the next morning - 7 hours later - it would still be at 100%.

     

    I am wondering if the reading is accurate on your iPad and that is why I suggested seeing how much actual usage you get out of the battery with a full charge. My thinking is that if you get 10 hours, the battery is working OK, but that still doesn't account for the inaccurate reading of the indicator.

     

    If the device is less that 14 days old and if you bought it an Apple Store, you can return it for a full refund - no questions asked - and then purchase another one.

  • 4. Re: iPad 3 battery running down
    Texas Mac Man Level 8 Level 8 (45,805 points)

    Look at the Extend iPad Battery Life link (below) first.

     

    The quickest way (and really the only way) to charge your iPad is with the included 10W USB Power Adapter. iPad will also charge, although more slowly, when attached to a computer with a high-power USB port (many recent Mac computers) or with an iPhone Power Adapter (5W). When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge very slowly (but iPad indicates not charging). Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.

     

    Apple recommends that once a month you let the iPad fully discharge & then recharge to 100%.

    How to Calibrate Your Mac, iPhone, or iPad Battery

    http://www.macblend.com/how-to-calibrate-your-mac-iphone-or-ipad-battery/

     

    At this link http://www.tomshardware.com/reviews/galaxy-tab-android-tablet,3014-11.html , tests show that the iPad 2 battery (25 watt-hours) will charge to 90% in 3 hours 1 minute. It will charge to 100% in 4 hours 2 minutes. The new iPad has a larger capacity battery (42 watt-hours), so using the 10W charger will obviously take longer. If you are using your iPad while charging, it will take even longer. It's best to turn your new iPad OFF and charge over night. Also look at The iPad's charging challenge explained http://www.macworld.com/article/1150356/ipadcharging.html

     

    Also, if you have a 3rd generation iPad, look at

    Apple: iPad Battery Nothing to Get Charged Up About

    http://allthingsd.com/20120327/apple-ipad-battery-nothing-to-get-charged-up-abou t/

    Apple Explains New iPad's Continued Charging Beyond 100% Battery Level

    http://www.macrumors.com/2012/03/27/apple-explains-new-ipads-continued-charging- beyond-100-battery-level/

    New iPad Takes Much Longer to Charge Than iPad 2

    http://www.iphonehacks.com/2012/03/new-ipad-takes-much-longer-to-charge-than-ipa d-2.html

     

    Apple Batteries - iPad http://www.apple.com/batteries/ipad.html

     

    Extend iPad Battery Life (Look at pjl123 comment)

    https://discussions.apple.com/thread/3921324?tstart=30

     

    New iPad Slow to Recharge, Barely Charges During Use

    http://www.pcworld.com/article/252326/new_ipad_slow_to_recharge_barely_charges_d uring_use.html

     

    Tips About Charging for New iPad 3

    http://goodscool-electronics.blogspot.com/2012/04/tips-about-charging-for-new-ip ad-3.html

     

    Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips

    http://thehowto.wikidot.com/prolong-battery-lifespan-for-ipad

     

     Cheers, Tom

  • 5. Re: iPad 3 battery running down
    Philly_Phan Level 6 Level 6 (11,705 points)

    bhsummer wrote:

     

    I get what your saying.  In this case, the battery percentage drops consistently.  So, if it loses 10% life over 10 hours on standby, that's about an hour of actual usage I am losing.  Charging at night is possible, but I'm also talking about having it in a bag for 8 or 10 hours and then pulling it out to find it lost 10% ... It's disappointing and it shouldn't lose that much in standby ... My iPad 2 certainly doesn't and it is set up identically.  As I said, I would expect longer standby time if the screen is always off. Might need to try another one.

    Using the battery level meter in this manner is comparable to using your car's fuel gauge to calculate miles per gallon.  The only thing that matters is the total amount of operating time from full charge to auto-shutdown (ignore any low level alerts that may appear).

     

    An irony is that doing a test (per the above procedure) to determine the total operating time is also the exact procedure necessary to calibrate the battery level meter.

     

    I'm not claiming that you do not have a problem.  I am stating, however, that we don't yet know whether or not a battery problem exists.

  • 6. Re: iPad 3 battery running down
    bhsummer Level 1 Level 1 (0 points)

    I definitely appreciate the tips -- I do agree Philly_Phan it's not yet certain.  I'm a road warrior and geek, so I'm quite used to how batteries typically perform.

     

    To know for sure I'd need to run an exact test (honestly, not something I'd likely do), but in my casual observations where my usage is consistent, it just seems like it's draining a LOT of power while on standby. 

     

    I also appreciate the links -- but truthfully, most of the general guidelines I'm aware of.  What I might do is wipe the device, see the run down rate while in standby with nothing installed, then compare after a restore.

  • 7. Re: iPad 3 battery running down
    Shawn Mass Level 1 Level 1 (0 points)

    I followed the advice by many here and restored my new iPad and the problem continues.  I let the battery drain down to 0% the first few times when I first got it and charge it for at least 8 hours to make sure the battery gets to 100% full charge. 

     

    My battery still drains down 15% to 20% overnight, sometimes MORE.  I barely use the new iPad.  It sits on my nightstand most of the time.  In 3-4 days on standby, the iPad dies.  My iPad 2 never had issues like this.  I have the Verizon 4G 64 gig version.  I exchanged the iPad at Best Buy because I thought something was wrong with the battery on my first iPad 3, but it looks to be a software issue instead of a hardware issue.

     

    What do I do now? 

  • 8. Re: iPad 3 battery running down
    Philly_Phan Level 6 Level 6 (11,705 points)

    800=275-2273 in the U.S.A. and I think Canada.

  • 9. Re: iPad 3 battery running down
    Shawn Mass Level 1 Level 1 (0 points)

    Philly_Phan,

     

    I called Apple iPad support and they had no solution to my problem.  They simply told me to go to an Apple store to test out the battery.  It's NOT the battery in the iPad.  It's NOT a hardware issue.  It's all software.  Will Apple be releasing a software issue to fix this? 

  • 10. Re: iPad 3 battery running down
    Philly_Phan Level 6 Level 6 (11,705 points)

    It IS the battery.  It IS hardware.  It's not software.

     

    Go to the Apple Store.

  • 11. Re: iPad 3 battery running down
    Shawn Mass Level 1 Level 1 (0 points)

    So I got two defective iPads in a row from two different shipments from two different Best Buy stores?

  • 12. Re: iPad 3 battery running down
    Philly_Phan Level 6 Level 6 (11,705 points)

    You have a problem with a product.

     

    Option 1...  Do what the manufacturer of the product has told you to do.

     

    Option 2...  Fix the problem yourself.

  • 13. Re: iPad 3 battery running down
    bhsummer Level 1 Level 1 (0 points)

    For what it's worth, Shawn, I think it is possibly a software issue as well.   It could be hardware -- I haven't ruled that out.  What I'm going to do tonight is backup then wipe the device, and see, on standby, how it does overnight.  Then I'll restore it and try it again.   My drain isn't as bad as yours -- mine goes at about 1% per hour in standby. 

     

    The reason I don't believe it to be solely a hardware fault is that everything else runs fine -- the run time using the tablet is slightly less than the ipad 2, which seems expected.  The battery drain is predictable, etc.  It just seems to be leeching too much power in standby (even in Airplane mode) -- so, possibly an app or something isn't sleeping properly, a radio isn't being disabled -- I don't know.

  • 14. Re: iPad 3 battery running down
    bhsummer Level 1 Level 1 (0 points)

    So here is an interesting test.

     

    I have an app on both ipads that talks to a home automation server in my house over HTTP.  One is an ipad 2, the other the new ipad.  The new ipad is a restore from the ipad 2 backup.

     

    If I watch the log file on the server and start up the app on the ipad 2, I'll see connections every few seconds as the app talks to the server.  If I close the smart cover or hit the standby button, I'll see connections for about 10-15 more seconds, then none.  The app sleeps.

     

    If I do this test on my new ipad, the connections continue indefinitely, even if put the ipad in standby.  I typically do close the app, but one night I forgot to do so and saw the log file was full from the previous night, all night.

     

    So, there's a difference right there between the two.  The app should sleep but isn't on the new ipad.  It's conceivable that something else in the background is continuing to run, but shouldn't...

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