Weird battery values bq Aquaris 4.5

[Davide Alberelli]

Many times it happens that the percentage of the battery shown is not the real one.

Yesterday evening I had a big problem where the phone suddenly went from 20% to 0% and it shut itself down.

This is shown in the battery history graph, that I attach.

As you can see there are various vertical lines, clearly indicating that the value jumps from one point to the other.

This is a big problem, because if one sees that the phone has still 20% of battery, one thinks that it still has 1/5 of its life span before dying.

It is not the first time that this happens to me and others, and I believe that anyone experiencing this should attach a picture of it, so that eventually we might be able to resolve it, maybe with some kind of approximations.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[advocatux (advocatux)]

The battery percentage indicator is highly unreliable in BQ Aquaris 4.5.

For instance, yesterday my phone was showing 65% of charge during the whole day, only to change to 64% at the time I went to bed. This morning the phone was shut down and showing 0% of charge.

Possibly still the same bug as https://bugs.launchpad.net/canonical-devices-system-image/+bug/1458756 (That was reported for r22 but I'm running r26 now).

[SB (emehntehtt)]

I get this too with the latest update, battery goes to 0% very fast once you reach 20% charge, also I noticed the time since last charge can show way more hours than it should.

[Matthew Paul Thomas (mpt)]

The screenshot is not of indicator-power, it is of System Settings.

If the value is jumping in the System Settings graph, it can't be a bug in indicator-power.

The question then is whether it is a problem in upower, which provides the charging information, or in System Settings, which graphs the information provided.

If the battery indicator shows the same percentage, the problem is not in System Settings, it is in upower.

[Launchpad Janitor (janitor)]

[Expired for upower (Ubuntu) because there has been no activity for 60 days.]