indicator shows 25% charge but phone runs out of battery

[Bill Filler]

build 116 on Nexus 4

- Use the phone for a while when not plugged in
- After extended use or being suspended, indicator shows about 25% charge (still white)
- Then phone completely dies, battery is empty as you can't turn it back on unless plugged in

Expected results:
indicator should turn red when battery level critical
user should be prompted that battery level critical

[Bill Filler (bfiller)]

Run this command when the battery gets low to see if indicator reporting same thing that the backend provides:
gdbus call --system --dest org.freedesktop.UPower --object-path /org/freedesktop/UPower/devices/battery_battery --method org.freedesktop.DBus.Properties.Get org.freedesktop.UPower.Device Percentage

[Bill Filler (bfiller)]

Ran the command, it shows 9%, so it's pretty clear this problem is with the indicator. Yet the indicator is still white, and looks like at least 25% in the icon. If you open the battery indicator it correctly shows "Charge level 9%" yet the color/state of the icon is not correct.

It should do the following:
- if charge level below 20%, the icon should be red
- the user should be warned with a notification when batter drops below 20% and again 10%

Currently there is no accurate indication the battery is about to run out and the phone just dies, which is obviously not good.

[Charles Kerr (charlesk)]

The icon issue is described in <https://bugs.launchpad.net/ubuntu/+source/indicator-power/+bug/1186181/comments/12> which is currently blocked by design.

The notifications are covered in bug #1296431, which has an approved fix waiting to land.