Hello,
I'm using KDE neon 5.15 with Plasma 5.15.5 on an Dell E7250 Laptop. It works very well, just the remaining battery life is somehow static. Right now, the battery widget in the task bar displays "0:35 Remaining (79%)". The battery percentage is correct and is continuously updated, just the remaining time is static and nonsensical.

The acpi-command calculates the remaining battery life correctly:

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philipp@Notebook:~$ acpi
Battery 0: Discharging, 79%, 05:23:46 remaining

It seems a user of KDE on arch linux ran into exactly the same problem:
https://bbs.archlinux.org/viewtopic.php?id=245856

How can I fix this?

Thank you, Philipp

Hi, philippe
I have exactly the same problem. Anyone?

vladost wrote:Hi, philippe
I have exactly the same problem. Anyone?

Which exact plasma version and distribution do you use? Last I checked this was fixed a while ago, maybe upgrading is a good idea.

I am using Kubuntu 19.10 and Plasma 5.17.4.
The commad

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upower -i /org/freedesktop/UPower/devices/battery_BAT0


Gives me a correct "Time to empty" value.
But the battery indicator shows always the value that was set just after boot and this value is never updated.

The problem was resolved by disabling the previous session restore on login.

I had the same problem and can confirm that disabling KDE session saving was the solution.

Oddly enough, on installing kubuntu 19.10 it was always working on this laptop. Then after some update this problem starting occuring so I am wondering if it can be some recent regression?