It seems to be getting worse after current stable update (Ubuntu 31), battery 
refused to load beyond 58%, probably because voltage was above charging voltage.
It really seems like power driver is taking relative units for absolute, or 
making some strange kind of calculation towards charge/discharge level based on 
measurment statistics.
Right now it resumed charging after switching to another power source, and some 
persuasion. I have no idea what's going on at low level seeing as the battery 
indicator looks like it's yielding arbitrary numbers (though it does rise when 
charging and fall when discharging).
Shouldn't we be giving a relative index, or possibly measuring percentage by 
comparing this index with minimum and maximum values? Is that already what 
we're doing?
Anyways, thanks for any help on reading the battery indicator. Seeing as Ubuntu 
phones ship with non-replaceable batteries, the least would be not to kill them 
within a month.

Thanks for your work (and I guess it's hard to predict physics),
TM

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to upower in Ubuntu.
https://bugs.launchpad.net/bugs/1562636

Title:
  battery percentage drops suddenly from 10% to 1%

Status in upower package in Ubuntu:
  New

Bug description:
  The battery percentage drops from 10% to 1% and probably less in about a 
minute, even with phone locked and inactive.
  This has happened twice in a row already, and probably will systematically.
  Battery warning means I need to plug in instantly to avoid shutdown.
  There seems to be no way to calibrate battery measurements, or set a 
different warning level.
  I have no idea where to get log history for battery level, but I'll do it if 
someone gives me directions.
  Thanks,
  TM

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: upower 0.99.2-2
  Uname: Linux 3.4.67 armv7l
  ApportVersion: 2.17.2-0ubuntu1.3touch1
  Architecture: armhf
  CurrentDesktop: Unity
  Date: Mon Mar 28 01:20:15 2016
  InstallationDate: Installed on 2016-02-17 (39 days ago)
  InstallationMedia: Ubuntu 15.04 - armhf (20160217-111536)
  SourcePackage: upower
  UpgradeStatus: No upgrade log present (probably fresh install)

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