Tips for Mobiles

How to Calibrate Android Mobile Phone Battery

Battery CalibrationThe mobile phones are powered by rechargeable batteries included in the mobile phone itself. Most of the mobile phones provide 1 to 3 days of battery life and it depends on what kind of material with which battery is made up of. The Android operating system powered by Google eats up the battery a lot more than any other operating system because in Android there is continuous synchronization of data. If you get more than 24 hours of battery life on your phone then it’s phenomenal.

For those who love to change the ROMs on their phone often, you would be obsessed calibrating your phone’s battery very often. For those who have flashed their mobile handset with custom ROM, they are advised to charge their mobile phone to 100 % battery and then update the firmware. Suppose of if update the firmware if you have 50 % battery life, then the new custom ROM will consider you 50 % battery life as the full battery stats and thus it would provide you half the battery as specified by your phone manufacturer. In such cases the battery calibration is required to gain 100 % battery backup as specified and let us go through some of the basic calibration process.

Android Phone Battery Calibration

Before proceeding to the battery calibration steps you should have Clock Work Recovery installed on your phone and you must be aware on how to get into recovery mode of your phone. For most of the Samsung mobile phone the recovery mode can be accessed by holding the volume UP button, OK button and then holding both simultaneously you need to press the power button until you see the blue screen background on your phone. The video here would be explaining you how to get your phone in recovery mode. For most of HTC handsets you need to hold the volume down button and then press power button.

Here is the procedure to Calibrate your phone Battery –

  • First, you should power off your mobile phone and pull the battery and then re-insert it.
  • Now you should know how to get your mobile phone in recovery mode.httpv://
  • Now you need to go to Advanced option where in you would be navigating using the volume up and volume down button and using the power button you would be selecting the option. In the Advanced option would be selecting the ‘Battery Stats’ and then you would have to select “Wipe Cache”. Now that would wipe out the what is taken as 100 % during the custom ROM installation.Recovery Mode

Now to determine the 100 % specified battery life of your phone, it can be achieved in three ways basically –

The Battery Drain Way

  • Drain your phone battery until its fully dead or till it switches off automatically.
  • Now charge your phone normally to the full battery.
  • You must have Clock Work Recovery app installed on your phone, you should reboot to clock work recovery and then wipe the battery stats found under the “Advanced” option and then reboot the phone.Clock Work Recovery Mode
  • Now you should look out the ways to quickly drain out your battery now. So better turn on Bluetooth, Wi-Fi hotspot, Wi-Fi, flashlight, camera to make your battery again dead.
  • Now charge your phone normally to the full and you are ready to get extra battery life added to your phone.

Power OFF Charge Method

  • In the Power OFF method you would be charging your phone to 100 % when it’s ON.
  • Unplug the charger from the phone, Power off your phone and then charge it up to 100 % again when it’s on power OFF state.
  • Now again unplug the charger from phone. Power it ON and then charge it again to 100 % while the phone is ON.
  • Unplug the charger and then reboot the phone using the Clock Work Recovery.
  • In Clock Work Recovery options, go to Advanced and then select the clear battery stats options.
  • Power ON and charge the mobile to full, enjoy.


  • When your phone is powered ON, charge the battery until the LED turns BLUE.
  • Unplug the phone from the charger and wait till the LED turns OFF.
  • Now power OFF your phone.
  • When the phone is OFF, plug the charger into the phone and charge it up until the LED turns Blue.
  • Still the phone is OFF and unplug the charger, wait until the LED turns OFF.
  • Now Power ON the phone.
  • Wait until the phone is booted completely and then power OFF the phone again.
  • When the phone is OFF again plug the adapter into your phone and charge it up until the LED turns blue.
  • Now boot your phone in recovery mode and once you see the blue screen, navigate to Advanced option using the volume up and down keys and then choose the option ‘Wipe Battery Stats’.
  • Now Power OFF your phone and use it normally.

Do let us know if you come across any issues during the battery calibration steps and we would try to resolve those issues. You can make use of comment section below to communicate with us and explain your issues clearly.



  1. jerd

    February 13, 2012 at 6:29 am

    Hi, Thanks for this helpful post. I just tried the “The Battery Drain Way” but when im charging on off state i already charged more than 6hours and not being full, so i decided to open in and do the “Power OFF Charge Method” but again on the step on charging when OFF state, i charged it more than 6hours, and still it happens to be not yet full charge and again i open it and continue with the steps.

    My question is, normally how much time does it take to be fully charged when OFF state? Does my 2nd method calibrates my battery correctly? or still not? Also, can i do these methods several times?

    Thanks Again

  2. lilbadgirl

    February 11, 2012 at 11:22 am

    why it is not possible on sony ericsson android phones?

  3. divith

    January 2, 2012 at 8:38 am

    what about keeping the battery to 100% and re installing the firmware????? hey neal contact my e mail id. i want to ask some questions.

  4. uros kovandzic

    November 21, 2011 at 1:04 am

    Hello, thanks for the info. I noticed that there are 2 different calibration methods on your web site. This one here, and the other one on this link
    Since the two of them are very different (this one with about using electrical charger during cahrging and the other one using an USB cable), I wonder which one of them is better and which one do you recommend.
    Also, there are some inconsistencies in the *POWER OFF/POWER ON METHOD* described above. You wrote that we should clear battery stats in recovery mode while phone is on the charger (you didn’t mention that it should be took off from the charger), and also you wrote in the end *Now Power OFF your phone and use it normally*. Did you mean *Power ON your phone* instead??

    • NeaL Pradeep

      November 21, 2011 at 10:30 am

      yes, you can make use of both the methods
      ! yes its power ON!

  5. alex

    November 6, 2011 at 6:33 pm

    ei guys..! just new here.. just wanna know what is a clock work recovery and why is it important b4 doing ds calibration.. i wanna try ds with my ace..thanx a lot!

    • NeaL Pradeep

      November 6, 2011 at 9:56 pm

      yes you can try this out for your phone!

  6. Nishant Gupta

    October 14, 2011 at 8:21 am

    Will this method work to calliberate my LG Optimus 1 mobile phone battery?

    Also kindly tell me whether Andriod 4.0 has arrived and can be installed in my mobile?

    • Yogesh Patel

      October 14, 2011 at 9:06 am

      Yes, this can work for any Android phone. Try it out!

      Android 4.0 hasn’t been launched and no idea when it would arrive for LG Optimus 1.

  7. Anandan

    October 12, 2011 at 11:02 am

    Hey guys,

    I own Samsung Galaxy Fit S5670.

    When I tried to install Clock recovery, my phone got dead.

    its not booting up got to take it to the service center

    I think the software ROM manager is the reason for my dead phone.

    • Yogesh Patel

      October 13, 2011 at 9:41 am

      ROM Manager is the officially available App at Android Market. The problem is something else.

  8. Jo

    October 11, 2011 at 7:04 pm


    I don’t have the “Advanced menu” when I root my Samsung GT-I9000.

    Please help 🙂

  9. Shen

    October 10, 2011 at 9:19 am

    Would this really only recalibrate the battery or maybe delete some data/restore the phone to factory default/else??

    • Yogesh Patel

      October 10, 2011 at 10:17 am

      It will calibrate your phone battery, no data would be lost.

      • Shen

        October 10, 2011 at 11:26 am

        Glad to know that..
        Thanks 4 the reply 🙂

      • blb1980

        March 15, 2012 at 10:53 pm

        @Yogesh Patel, What is the purpose of calibrating a battery? Does your phone have to be a rooted phone in order for it to work? I do not have root. I have Samsung Galaxy s2 ATT i777 version.

  10. ajufo udenna

    October 8, 2011 at 11:59 am

    i love my samsung galaxy s i9003 but the phone is no more. i flashed the phone with a custom ROM and since then it has refused to boot, go into recovery mode, go into download mode, name it it has been like that for a month i am depressed cuz i love the gt i9003..its so sad can someone rescue my phone?

    • NeaL Pradeep

      October 8, 2011 at 6:27 pm

      with which custom rom you flashed?

    • Kender

      April 29, 2012 at 6:33 am

      Try Odin to recover your phone. I brought mine back from brick with it.

  11. skeisham11

    October 8, 2011 at 9:54 am

    Please let me kn
    ow about Xperia mini pro battery calibration. Thank you.

    • Yogesh Patel

      October 8, 2011 at 6:25 pm

      Battery Calibration for Sony mobile phones is not possible.

  12. Nauman

    October 8, 2011 at 9:12 am

    is this method ends up with dead mobile or any thing else severe ??

    • Yogesh Patel

      October 8, 2011 at 9:47 am

      Nothing happens to your phone, the method will fetch you battery life as specified by your phone manufacturer.

      • bilal

        December 15, 2011 at 2:34 am


        • NeaL Pradeep

          December 20, 2011 at 12:44 am

          it only works on the custom firmwares! yours is the stock firmware!

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