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I have a DELL LATITUDE E7450 with battery issues. When it is fully charged (displaying 100%), after some time the battery charge drops suddenly from 100% to 0%. When I unplug the charger, it warns me that the computer will shut down, and it indeed shutdowns after a few minutes as if the battery was completely empty.

When I replug the charger with the battery at 0% charge after the bug, the whole system is much slower (meaning that it takes a lot of time to even load a web page or do other stuff), and I have to hard reboot to have the system back to normal.

Finally what I came across is that if I remove the battery (while it's at 0%) and put it back, the display will be correct, and if I unplug and replug the charger after that there are no problems on the system.

The bug is usually happening if I let my computer plugged for a night. So I guess after several hours of charge, the bug happens.

I'm running on Ubuntu 18.04.3 LTS, and in the BIOS the state of my battery is Excellent.

[EDIT 1]
Battery capacity according to Power Statistics:

This is what I get with power statirstics

And this is the output of upower -i upower -e | grep 'BAT':

 /org/freedesktop/UPower/devices/battery_BAT0
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  • Did you try it with other OS like Windows, to make sure that it is not a hardware problem Jul 24 '20 at 7:20
  • Install an app called power statistics, select laptop battery in the left column, and post a screenshot with energy when full and energy(design). Or just edit the question with the output of "upower -i upower -e | grep 'BAT'" command Jul 24 '20 at 7:23
  • I have edited the post with the information you required
    – Syndo rik
    Jul 24 '20 at 14:43

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