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Calibrate Android Battery : The complete guide to Android Battery calibration

Calibrate Android Battery : The complete guide to Android Battery calibration

android low batteryWhether it’s the long journey in train or a video call with your client or at the worst you get lost on your way back home from a party. There’s a high probability that you may flick out your phone to get help, entertainment or to accomplish a task. But seeing it cry for power when you need it the most can leave you disappointed and frustrated at the battery life of your android device.

The thing i personally hate the most about smartphone’s is their battery life, specially the one’s which come with a more powerful processor and a beautifully big screen.

What is Battery Calibration?

Calibrating your Android Smartphone’s battery is a good way to use it more effectively. Calibration does not require you be a techie neither does it require you to spend days and hours with your android device. Just 5 minutes of your time just for once and a more healthy battery doesn’t hurt either you or your phone.

Why and when do you need to calibrate your android phone’s battery?

If your smartphone has been tasting custom ROM’s there’s a high possibility that battery stats may be read wrong and a reason why the phone may not be able to charge the battery completely.  So if you have flashed a custom ROM or keep flashing new ROM’s every few months, consider calibrating your android phone’s battery atleast once after successfully flashing your device.

How to calibrate your android phone’s battery?

These steps can be useful to calibrate battery life of HTC, Motorola Droid phones, Samsung, Acer, Dell and other major android phones and tablets.

Pre calibration steps:

Make sure you have completely installed the ROM you desire

Use the battery for a one full cycle, from charging to 100% and draining it to as low as 0%

Steps to calibrate battery:

1)      Confirm that your battery is fully discharged by turning your device on leaving it until it automatically powers off.

2)      Pull out the battery for a minute or half.

3)      Place back the battery and put it for a full charge, can be done over night when you go to sleep. Once fully charged, remove the USB for atleast a minute then connect it again and charge for another fifteen minutes.

4)      Remove the USB cable and turn on your device in recovery if Rooted or normal mode for non rooted calibration app users.

5)      Follow any of the four different methods mentioned below. Use the one that matched your device state and is easy for you to go with.

a)      Recovery menu -For ROOTED android device users > Go to the recovery menu by holding volume down while powering On > Go to “Advanced” menu > select “Wipe battery Stats” > Confirm with “yes”.

b)      Calibration app – (Non ROOT method) Download one of the app here. Open the calibration app and plug in the charger, then wait until 100% charged. Once done unplug your charger and click battery calibration button. This will remove the batterystats.bin file and thus create a fresh file with current stats.

c)      Terminal Emulator – type su then press enter, next type

(i)     ‘rm data/system/batterystats.bin’ (without quotes).

(ii)   Note: Requires phone drivers for connection and Terminal emulator

d)      Manually – For ROOTED device users (temp root supported via Universal AnDRoot) if for any reason the previous two methods didn’t work you may want to try deleting the file manually. Using a file manager with root access (such as Root Explorer) navigate to ‘data/system/batterystats.bin’. Delete ‘batterystats.bin’

6)      Restart your device after completing above step(5). Your device will now creates a new batterystats.bin file itself with a correct 100% battery reading. Please do a final 30 minutes charge after wiping battery stats.

OPTIONAL STEPS : The long old method to improve calibration. 

  1. Run down the battery until it turns itself off
  2. Turn on the device and charge for at least 8 hours
  3. Unplug the device, turn off and charge for another hour
  4. Unplug the device, turn on and wait for 2 minutes
  5. Turn off and charge for another hour
  6. Use the device as normal!

 

Any one of the four methods ( in Step 5) is good enough to calibrate your android phone’s battery. You need not use all of them

Enjoy your Android phone or tablet with the calibrated battery and an impressive performance boost of atleast 150%. Some users have reported twice the battery lifetime with battery calibration, some also say the battery stays at every battery level for longer unlike before when battery actually jumped from 100 to 93 directly.

Note:

  • Use a Wall charger if possible or at the worst Hi-Speed USB ports
  • Do not try to calibrate a battery which has been used more than 8000 hrs or 1 year, because calibrating the battery will not improve the capacity of an old battery.
  • Performance various upon awake time/standby time and thus results may not same for each user and/or device.

Do let us know your performance improvement, with device name, android OS version, ROM and old battery life vs new battery life with the comments section.

LAST UPDATED : ~ 1st December 2011



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3 comments

  1. Quote
    Calibration app – (Non ROOT method) Download one of the app here. Open the calibration app and plug in the charger, then wait until 100% charged. Once done unplug your charger and click battery calibration button. This will remove the batterystats.bin file and thus create a fresh file with current stats.
    End Quote

    Which app in the market does calibration and does not require root?

    Thanks!

  2. What if my battery is not removable? I’m a Sony Xperia Sola user.

    • For Non removable battery phones try using the soft reset by holding power button for 10 seconds(usually).
      Please check with your phone manufacturer for phone restarting instructions.

      You will also need do a full battery discharge for the first time followed by a full battery top-up.

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