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Weird battery levels on Xperia u

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By NeriL, Senior Member on 26th June 2014, 05:14 AM
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1st July 2014, 04:27 PM |#11  
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Quote:
Originally Posted by NeriL

Should I reboot my phone while plugged in to test that out?

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Yup, when the phone is plugged. That way, if your phone plugged at 100% and then rebooted, there is no way the charge goes down if the battery is all good
 
 
2nd July 2014, 06:00 PM |#12  
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Quote:
Originally Posted by ScarletAzure

Looks like the battery has degrade, as it has been used for 1.5 years old. You may try to do this:

1. Charge to 100%
2. Reboot
3. See if the charge is still 100% or not

If the charge is not 100%, chance is, the battery meter has run out

Battery meter should decrease a bit around 2 - 6% after reboot because of boot up time will still consume battery a little even charger is connected all the time. That is normal. But if there is too much drop after reboot then it might be the battery had been degrade too much.

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2nd July 2014, 06:31 PM |#13  
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Rebooted when battery was 100% and when android initialized, it was 98%..

BTW, phone shuts down when battery is around 5%

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2nd July 2014, 07:12 PM |#14  
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Originally Posted by NeriL

Rebooted when battery was 100% and when android initialized, it was 98%..

BTW, phone shuts down when battery is around 5%

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That seems normal for me. I am using very damaged battery (inflated and punctured pinhole) in my XP a while now and it would got around 10-15% of remaining battery before its shut down. I've test my battery with multimeter and my battery only had around 3.2volt remain. Seems like android will power off after certain voltage threshold is reached (in my case 3.2v i assume?). So that definitely means the battery damaged.

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