11 Replies Latest reply: Jul 12, 2012 5:04 AM by vaa0829
Censt62001 Level 1 Level 1 (0 points)

I can literally watch the battery percentage fall.  I'm 110% sure this is upgrade related.  I called for support and they told me that there was nothing I could do but hold my breath and wait.  Oh, and post my complaint here.  I tried downgrading but probably need to watch a video tutorial because I couldn't get it to work.  Any other solutions users have found?  Btw, I guess I was and am now in the minority.  My batter life was fine.  Now, I have a fairy useless $700 tool.  What a great device, its a shame.  I hope a fix is coming soon.  I have a $900 person sales force and many don't have our devices.  These types of issues won't float.  We use them for surgical support and they are now useless by noon, well except paper weights.





iPad 2, iOS 5.1.1
  • 1. Re: New 5.1.1 Software sliced battery life in half.
    celliott147 Level 4 Level 4 (1,135 points)

    Try to restore it as a new device. Plug it into the computer and open iTunes. Then click on your iPod when it pops up under devices. Then click restore. You will be asked if you want to restore from a backup, or as a new device. choose new device.

  • 2. Re: New 5.1.1 Software sliced battery life in half.
    Texas Mac Man Level 8 Level 8 (45,780 points)

    You may need to recalibrate the battery. See link below.


    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



    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)



    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



     Cheers, Tom

  • 3. Re: New 5.1.1 Software sliced battery life in half.
    Censt62001 Level 1 Level 1 (0 points)

    Thanks to everyone for the advice.  I've tried recalibrating with no luck.  Same outcome.  I'd try restoring it, but it will still have 5.1.1 on it so I'm not sure how that would help.  It seems to be an issue with my hardware and 5.1.1.  I'm going to try to downgrade as I've see elsewhere in the forum.  I don't think I read the instructions fully.  I'll update this thread with the results.  If anyone else has thoughts I'd love to hear them.

  • 4. Re: New 5.1.1 Software sliced battery life in half.
    Encrypted11 Level 2 Level 2 (350 points)

    Downgrade tips as follows:

    I advise anyone to read the entire post before acting on anything!

    The contents below tell you how to conduct a downgrade of iOS 5.1.1, only to 5.1. Through official means and no jailbreaking or system glitching is needed.




    • This is NOT a reference to jailbreaking and is done through all official means provided to customers without circumventing software security of iOS or iTunes.
    • No instructions below are tailored to downloads of hack/circumvention tools from the jailbreak community.
    • I'm leaving all of these notices in one post to ensure forum moderators are aware of the entire purpose of the thread.
    • This thread is aimed purely at people facing issues with their devices prior to iOS 5.1.1 update, not wrecking them, not 'solving' the issue with blanketing.

      Also.. if the forum moderators are not aware of such practices mentioned below in this thread... go find out from the Apple Software Engineers. 


    Here goes...


    Good news

    I believe you can download the entire iOS firmware and perform a downgrade to iOS 5.1, that's it.

    Usually when Apple releases a new firmware, the previous version will still be made available for a time frame of around 2 weeks. As of now, 5 days have passed.


    Apple temporarily verifies (not a reference to jailbreaking..) and validates that the firmware (the one right before the update) is a "new version". These ~2 weeks given is quite meant to be "familiarisation period", downgrades/upgrades allowed (currently, iOS5.1 as a restored version is allowed).

    Note: You cannot go back to v4.3.5, v5.0.1, v5.0.0 etc... they're no longer validated by Apple as they're old, phased out firmwares.


    Before you start performing/attempt a "downgrade",


    • Backup your device through iCloud or syncing with the host computer
    • Download /locate iOS5.1 firmware, still avaliable through iTunes as the new firmware is still in the Over-the-air period I believe OR,
      • googling the link
      • Protip: Your recycle bin/trash might contain the iOS 5.1 file you used OR look at
      • Windows Vista & Windows 7: \Users\username\AppData\Roaming\Apple Computer\iTunes\iPhone Software Updates
      • For Mac: ~/Library/iTunes/iPhone Software Updates
    • Restore your iPad in this case through DFU mode by
      • Attach the device to the computer
      • Turn the phone off
      • Hold power button and home together for *exactly* 10 seconds
      • Release power button but keep holding home until the pc beeps as a USB device is recognized.
      • At no point will the display come on. Now your restore should work.
    • Hold shift key + restore button on iTunes (for windows, I'm not sure of mac equivalent) also a deliberate feature of itunes
    • In the directory, point iTunes towards the ipsw download
    • iTunes will now authenticate the firmware
    • Let the device do its job
    • After all's done, restore your files onto the iPad/iDevice with the backup.


    Reminder: The period lasts for around 2 weeks from the release date of iOS 5.1.1.

  • 5. Re: New 5.1.1 Software sliced battery life in half.
    Censt62001 Level 1 Level 1 (0 points)

    So, I have a solution.  Thanks to everyone.  I swallowed my pride and went to the Genious Bar at the Ross Park Mall in Pittsburgh.  They did what I believe is similar to a wipe of my ipad2.  First, I backed up my device to my PC.  They shut it down and held down the lone "action" button while it started back up.  Then I restored it as a backup. 

  • 6. Re: New 5.1.1 Software sliced battery life in half.
    j-picard Level 1 Level 1 (5 points)

    It does appear that since the upgrade to 5.1.1, the battery meter drains faster than before...not sure of why this is happening but I did a full drain and re-charge since the upgrade which did not help.  Apple might want to take a look at this.

  • 7. Re: New 5.1.1 Software sliced battery life in half.
    DanielZ71 Level 1 Level 1 (0 points)

    Since the update to 5.1.1 on my iPod 3 battery lasts for not even one whole day in standby.

    I tried the recommendations (reset as new deivce, disable all email accounts / disable iCloud / disable notifications / no more push etc)

    I let the battery drain until the iPod turns off, recharged it, left it charging for 2 more hours... Repeated this 3 times...


    The only thing that stops the iPod from draining the battery within 20h standby is: Cutting off network!

    I found out there's constant network traffic to push.apple.com and some 1e100.net host (?).

    Even if anything that makes sense is turned off, the traffic keeps the iPod working in the background... and drains the battery as if it was turned on (except for the display)...

    I recall the times of iOS 3 where the iPod even turned off WIFI when going to standby...


    So I help myself with Airplane mode but this is not really elegant...


    Apple's updated made my iPod more and more unusable. Sorry to say that. I followed all the updates after 4.x only to get improvements on the battery life...


    Of course I tried to downgrade back to an older version (5.0.1) but this isn't eligible anymore...





  • 8. Re: New 5.1.1 Software sliced battery life in half.
    Menneisyys Level 4 Level 4 (1,300 points)

    DanielZ71 wrote:

    I let the battery drain until the iPod turns off, recharged it, left it charging for 2 more hours... Repeated this 3 times...


    Do NOT recalibrate to get better battery life. Unfortuntely, a lot of outdated docs and tutorials tell you do do it. It's no longer the case, it will not, again, will not prolong battery life - no wonder that even Apple state (see http://support.apple.com/kb/HT1490 ) all their post-2008 Macbooks (and also iPads!) are pre-calibrated. It only helps the battery meter to show a more precise value but will NOT increase battery life at all, not by  a second, but will contribute to the Li-Ion battery die on you earlier. (Also see the discussion at https://discussions.apple.com/thread/3986014?start=0&tstart=0 .)


    As far as battery life is concerned, I've encountered no problems on my 5.1.1 iPad 2 (completely reset and reinstalled from the beginning). However, I did run into similar problems on my iPhone 3GS upgraded from 4.2.1 to 5.1.1 with a complete wipe - the battery life seriously decreased. That is, it's indeed not impossible 5.1.1 does cause a battery life hit.

  • 9. Re: New 5.1.1 Software sliced battery life in half.
    Menneisyys Level 4 Level 4 (1,300 points)

    Texas Mac Man wrote:


    You may need to recalibrate the battery. See link below.


    As has been discussed in several other threads (also when referring to your recalibration advice), this is not really the case with iPads.

  • 10. Re: New 5.1.1 Software sliced battery life in half.
    DanielZ71 Level 1 Level 1 (0 points)

    Hi Menneisyys,

    thanks for your input.

    Of course I know that this is not a question of calibration but of power consumption due to network traffic keeping the iPod (not iPad!) from going to sleep.

    I just mentioned that I didn't leave out any hint. Many people out there poke on reset and battery charge cycle as a good solution.

    I think that continued traffic to push.apple.com even if push and all that is turned off is keeping WIFI all the time active.

    And WIFI on a iPod is quite expensive on battery power.

    It would be enough to turn WIFI off when in standy an on when on. Like it was with iOS 3.

    We can simulate that manually with Airplane mode but that really *****...


  • 11. Re: New 5.1.1 Software sliced battery life in half.
    vaa0829 Level 1 Level 1 (0 points)

    I have a New iPad which is Wifi only.  The first 4 weeks I had it the battery life was spectacular.  I used it often (I use it for business) and the battery lasted about a week.  I charged it last week, shut it down after I charged it, did not pick it back up for a week, and the battery was fully discharged.  I did a similar experiment yesterday, charged it fully, used it a bit (battery went from 99% to 50% in a about 90 minutes) and then shut it down fully at 50%.  This morning when I turned it back on it was at 25%.  It went from 50% to 25% while it was turned off!!!  How can this device go from hanging at 90+% for days to draining half the battery life while it is turned off!


    When a similar thing happend with the iPhone 4 about a year or so ago, it was coincidal with an OS upgrade.  I'm wondering if the same is true for the New iPad.


    I need this device to work so any help would be appreciated...by the way turning off location services did not make any discernable difference.