How to calibrate my iPad battery gauge?

I heard that draining iPad battery to 0% is harmful to battery.So how I calibrate my battery gauge without fully discharging it?
I hope somebody will give me a clear answer to this.

When the guage says 0% the battery still holds a safe charge. The guage is only an indication, and the phone (being smart) ensures that the battery charge can get neither damagingly low or overcharged.
Once a month or so, run the iPad, ignoring battery warnings, until it powers itself down. Then plug it into its charger and charge it up to 100%. That's it.  The battery couldn't care less about this procedure, but it will as you say calibrate the gauge.

Similar Messages

  • How do you calibrate the iPad battery?

    How do you calibrate the iPad battery and is it necessary to discharge battery 100%. I have  the 3 rd generation iPad, it has been almost a year since I purchased it and the battery when fully charged reads 100%. Recently, I visited my local Jump Plus store and the staff said I should drain the batteries on my iPad & iPhone completely until they are dead and recharge once a month. Is this accurate?  It is my understanding that you should not drain the batteries completely? Also, is that the same as calibrating the battery?

    For proper reporting of the battery’s state of charge, be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down).
    http://www.apple.com/batteries/ipad.html

  • How long should an iPad battery last?

    How long should an iPad battery last?

    I don't know that Apple has published that information, but my guess is about five years under normal usage.

  • How to calibrate an iPhone battery?

    Hi, I took my iphone 4s to the genius bar at apple store today. Despite having terrible battery problems they told me to wait for ios 5.1 and to calibrate my iphone battery, I was also told that replacing the phone would not be a solution as it is a software based issue.
    So I have been browsing the web on how to calibrate an iphone 4s battery and have found answers but they all seem different. Answers I discovered were:
    1. 
    We must let the iPhone runs the entire burden of the battery, i.e. use it until it shuts down for lack of battery.
    After the iPhone battery has run out, we let it sit for about 6 to 8 hours.
    After this time because we can connect it to boot to load, this process should be left between 6 to 8 hours. (While it may use its load without disconnecting from the mains.)
    Once the load, you can enjoy your iPhone newly calibrated.
    2.
    "First, plug your device into a charger and let it charge fully – leave it charging for another hour or two after its fully charged. Then, remove from the charging source and use your device like normal. Do not plug it into a charging source, but use it until the device decides to power itself off due to low battery. When that happens, plug in your device into a charging source and let it charge fully. During this time, it is completely safe to use your device."
    Im still not sure how to calibrate an iphone battery.
    Can anyone please tell me the correct method?

    Calibrate iPhone Battery:
    Use the iPhone until it it shuts OFF itself, due to Low Battery. Then Charge it back up without interruption, like unplugging it, to full charge 100%. Then before or after you do this, Reset iPhone, hold both home and power buttons until the iPhone restarts itself, ignore the "slide to power off slider", let the iPhone restart itself.

  • How long is the iPad battery last while watching video on YouTube with 3G?

    How long is the iPad2 battery last while watching video on YouTube with 3G?

    My iPad 2 battery can use only ~7 hours 15mins when surfing the web using cellular data network. Is it normal?
    I would say that's normal. Cellular uses more power than wifi. Your screen brightness is also a factor. Lower the screen brightness & battery will last longer.
    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%.
    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/
     Cheers, Tom

  • HT4060 How long should an iPad battery last?

    When using my iPad continually I only seem to get approx 4 hrs use, is this about right?

    The usefull life of an iPad battery is about 1000 full discharge/charge cycles, by Apple's standards (i.e. at 1000 cycles, if not abused, it should retain about 80% of its original capacity).  But, a Lithium cell begins to loose capacity from the minute it is assembled at the factory.  It will continue to loose capacity over time, whether used or not.  So, if your iPad is a couple of years old and has had a lot of use (that is many discharge/charge cycles) then it will inherently last less and less on a charge as time goes by.  Also, if it has sat unused for very long periods (several or many months) it will have degraded much faster than if used regularly.
    As others have said, it also depends on your settings, and just what apps and things you normally run on it.

  • How to calibrate 3000 n100 battery?

    Does anyone know the process to calibrate the battery on a 3000 n100? My battery jumps to 0% and beeps but i am still able to run the computer for a while. Those beeps drive me crazy.

    Hi there...
    I am a retired IBM/Lenovo engineer specialising in the C-series and dead batteries are not unusual! Let's get some things straight first?
    1) We built most of the Lenovo/ThinkPad series to take specific batteries designed and built for our systems. They have special added function that handshakes with the microcode, BIOS and software to give a wide range of battery information and control.
    2) They used to be very expensive (>£60) but lately there are a lot of genuine ones at much lower prices. I bought two on eBay for just £20 only 6 weeks ago?
    3) You have every right to use a competitive/alternate battery but no-one in IBM or Lenovo can or will comment on whether they are suitable, will work correctly or will last very long.
    4) I CAN say that I have 'tested' several 'alternative' batteries and not a single one worked as I would have hoped! I will say no more since there are many I did not test?
    5) I am not sure what the concept of 'conditioning a battery is'? A battery is an object that holds a charge. Over time its ability to hold a charge reduces to some minimum close to zero? Some batteries 'die' much more quickly than others. Other last much longer of course.
    6) Many die because they have been discharged for a considerable time or they have been shorted out in some way and done an irreparable damage?
    7) If you have one that ONLY displays 'zero' this is can be because a) It is as dead as the John Cleese and Michael Palin parrot!! b) It has no function that the PC microcode/BIOS can measure c) There is a fault in the PC base code and it can no longer measure the battery.
    8) Let us be 'Nerd Sherlock' for a while? My suggestions are a) Try the battery in another C100 that you KNOW shows good charge? b) Borrow a battery from another C100? c) Buy a new battery and know that this is good! (Make sure it IS NEW! I reported a seller to eBay that sold C100 batteries as 'new' and were clearly 'used'. You can usually tell an old one because it does not come in the original box and the gold contacts show signs of wear. Even installing the battery a single time causes marks on the contacts?)
    9) Finally.... Ensure the battery is genuine! On the rear it will have the Lenovo logo top-left, the turquoise Li-ion label bottom-right and a 22-digit barcode? The ASM should be 92P1179 with a FRU of 92P1180. I have never found a non-Lenovo battery with the turquoise label?
    10) Best suggestion? Dump your current one and buy a new Lenovo one? You will be surprised at how much additional info you get once you install the Lenovo Power Management Driver from http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mob​iles/60pm07ww.exe
    Good luck?
    Tony

  • How to i calibrate the ipad 2 ?

    my ipad 2 needs to be calibrated does anyone know how this can be done?

    About Batteries in iDevices
    Apple - Batteries
    Battery University
    Apple - Batteries - iPod
    Apple - Batteries - iPhone
    Apple - Batteries - iPad
    How to Calibrate Your Mac, iPhone, or iPad Battery | MacBlend

  • Ipad battery. Do i need to calibrate?

    My 7 months old ipad 4 battery indicator is behaving very erratic. It is jump dropping and sometimes it just stuck at a percent. I haven't calibrated ipad even a single time since i bought it. Is calibrating bad? I heard its not good for the battery. Should i calibrate and how? Properly i mean. Thanks in advance.

    Try this first - Reset the iPad by holding down on the Sleep and Home buttons at the same time for about 10-15 seconds until the Apple Logo appears - ignore the red slider - let go of the buttons. (This is equivalent to rebooting your computer.)
    The quickest way (and really the only way) to charge your iPad is with the included 10W or 12W (5W on Mini) 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 (2.5W, 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
    iPhone: Hardware troubleshooting (Power/Battery section also applies to iPad)
    http://support.apple.com/kb/TS2802
    Extend iPad Battery Life (Look at pjl123 comment)
    https://discussions.apple.com/thread/3921324?tstart=30
    iOS 7 Battery Life Draining Too Fast? It’s Easy to Fix
    http://osxdaily.com/2013/09/19/ios-7-battery-life-fix/
    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
    iPad: Charging the battery
    http://support.apple.com/kb/HT4060
    Best Practices for iPad Battery Charging
    http://www.ilounge.com/index.php/articles/comments/best-practices-for-ipad-batte ry-charging/
    Tips About Charging for New iPad 3
    http://goodscool-electronics.blogspot.com/2012/04/tips-about-charging-for-new-ip ad-3.html
    How to Save and Prolong the battery life of your new ipad
    https://discussions.apple.com/thread/4480944?tstart=0
    Prolong battery lifespan for iPad / iPad 2 / iPad 3: charging tips
    http://thehowto.wikidot.com/prolong-battery-lifespan-for-ipad
    iPhone, iPod, Using the iPad Charger
    http://support.apple.com/kb/HT4327
    Install and use Battery Doctor HD
    http://itunes.apple.com/tw/app/battery-doctor-hd/id459702901?mt=8
    To Extend a Device’s Battery Life, Get to Know It Better
    http://tinyurl.com/b67c7xz
    iPad Battery Replacement
    http://www.apple.com/batteries/replacements.html
    In rare instances when using the Camera Connection Kit, you may notice that iPad does not charge after using the Camera Connection Kit. Disconnecting and reconnecting the iPad from the charger will resolve this issue.
     Cheers, Tom

  • How long should I charge the New iPad battery ??

    Hi,
    Can someone tell me :
    How long should I charge the New iPad battery ??
    i dont know, and i cant find this on the apple page.
    i know that with the iPod Touch Five and Four Generation, the charge its only 2-4 hours but on the iPad how long is the charge?
    im really miss it!
    Can someone help me ?
    Thanks!!

    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
    iPhone, iPod, Using the iPad Charger
    http://support.apple.com/kb/HT4327
    Install and use Battery Doctor HD
    http://itunes.apple.com/tw/app/battery-doctor-hd/id459702901?mt=8
    In rare instances when using the Camera Connection Kit, you may notice that iPad does not charge after using the Camera Connection Kit. Disconnecting and reconnecting the iPad from the charger will resolve this issue.
     Cheers, Tom

  • How can I remove the battery from my Iphone and Ipads?

    How can I remove the battery from my iphone and ipad?

    The iPhone and iPad do not have user serviceable batteries. Battery replacement is handled by Apple. Make an appointment at the Genius Bar if battery replacement is required.

  • HT1212 my ipad asks for a passcode but I never entered a passcode. this happened after the ipad battery went dead and i recharged.how do i get around the passocde prompt?

    My ipad battery went dead and after recharging and booting up the ipad, it is asking for a passcode. however, no one remembers ever entering a passcode in to this ipad, isnce it used by everyone in the house. how do i get around this passocde prompt?

    How can I unlock my iPad if I forgot the passcode?
    http://www.everymac.com/systems/apple/ipad/ipad-troubleshooting-repair-faq/ipad- how-to-unlock-open-forgot-code-passcode-password-login.html
    iOS: Device disabled after entering wrong passcode
    http://support.apple.com/kb/ht1212
    How can I unlock my iPad if I forgot the passcode?
    http://tinyurl.com/7ndy8tb
    How to Reset a Forgotten Password for an iOS Device
    http://www.wikihow.com/Reset-a-Forgotten-Password-for-an-iOS-Device
    Using iPhone/iPad Recovery Mode
    http://ipod.about.com/od/iphonetroubleshooting/a/Iphone-Recovery-Mode.htm
    You may have to do this several times.
    Saw this solution on another post about an iPad in a school environment. Might work on your iPad so you won't lose everything.
    ~~~~~~~~~~~~~
    ‘iPad is disabled’ fix without resetting using iTunes
    Today I met my match with an iPad that had a passcode entered too many times, resulting in it displaying the message ‘iPad is disabled – Connect to iTunes’. This was a student iPad and since they use Notability for most of their work there was a chance that her files were not all backed up to the cloud. I really wanted to just re-activate the iPad instead of totally resetting it back to our default image.
    I reached out to my PLN on Twitter and had some help from a few people through retweets and a couple of clarification tweets. I love that so many are willing to help out so quickly. Through this I also learned that I look like Lt. Riker from Star Trek (thanks @FillineMachine).
    Through some trial and error (and a little sheer luck), I was able to reactivate the iPad without loosing any data. Note, this will only work on the computer it last synced with. Here’s how:
    1. Configurator is useless in reactivating a locked iPad. You will only be able to completely reformat the iPad using Configurator. If that’s ok with you, go for it – otherwise don’t waste your time trying to figure it out.
    2. Open iTunes with the iPad disconnected.
    3. Connect the iPad to the computer and wait for it to show up in the devices section in iTunes.
    4. Click on the iPad name when it appears and you will be given the option to restore a backup or setup as a new iPad (since it is locked).
    5. Click ‘Setup as new iPad’ and then click restore.
    6. The iPad will start backing up before it does the full restore and sync. CANCEL THE BACKUP IMMEDIATELY. You do this by clicking the small x in the status window in iTunes.
    7. When the backup cancels, it immediately starts syncing – cancel this as well using the same small x in the iTunes status window.
    8. The first stage in the restore process unlocks the iPad, you are basically just canceling out the restore process as soon as it reactivates the iPad.
    If done correctly, you will experience no data loss and the result will be a reactivated iPad. I have now tried this with about 5 iPads that were locked identically by students and each time it worked like a charm.
    ~~~~~~~~~~~~~
    Try it and good luck. You have nothing more to lose if it doesn't work for you.
     Cheers, Tom

  • Satellite L755-S5153 How to calibrate bew battery?

    No matter how long I charge my new battery, the max charge it will report is 99%.  Will calibrating fix this problem?  And how do I calibrate a new battery?
    Thanks for the help!

    TheJake
    This is not a calibration problem.
    Newer windows versions keep the charging % at 99 for reducing Li battery stress (oh, yes, they do) and give you a longer usefeul life.

  • How do you change the battery in an ipad?

    I haven't had a problem with the battery on my Ipad Air as yet but was wondering how you would change the battery if needed?

    There are no user serviceable parts in an iPad. Take the iPad into Apple for evaluation if
    there is a problem. If needed, Apple can replace the battery for $99.00 US. Click here
    for details.
    https://www.apple.com/support/ipad/repair/battery-power/

  • How can i replace the battery of an iPad 2?

    How can I replace the battery of an 3.5 year old IPAD 2?
    battery is empying fast compared to when I bought it and I would want to give this to my parents

    Apple will replace the battery for you. See here for details: https://www.apple.com/batteries/replacements.html

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