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Weird battery levels on Xperia u

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ScarletAzure
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Quote:
Originally Posted by NeriL View Post
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
 
kopter3161
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Originally Posted by ScarletAzure View Post
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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NeriL
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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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Phone: Sony Xperia U
Rooted?: Yes
ROM: GB-Rocks v3 + Holo Dark Theme
Bootloader: Locked (Not-unlockable)
 
kopter3161
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Quote:
Originally Posted by NeriL View Post
Rebooted when battery was 100% and when android initialized, it was 98%..

BTW, phone shuts down when battery is around 5%

Sent from NeriL.device using NeriL.preferredApp
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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