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My laptop battery used to last 2-3hrs, and from one day to another its autonomy dropped to 15 mins, and a few hours later it wasn't functioning at all any more (as soon as I unplug the power cord, the laptop turns off).

I did some research online, and people say that a battery autonomy drops little by little, but that it is rare that it stops working like that, and that it could be a system issue.

The battery icon always says currently estimating charge.

I got a Thinkpad T520 and I'm on Ubuntu 18.10. I updated my system to the latest version hoping that it would solve the problem, but it didn't.

Does anyone have an idea what the problem count be?

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  • 3
    Sounds like hardware (battery) failure.
    – pomsky
    Oct 26, 2018 at 10:58
  • 1
    If resetting EC is not working, the battery is dead. Oct 26, 2018 at 11:09
  • 1
    Hardware questions are off topic on this SE -- you might look for a suitable SE that covers either battery technology or computer hardware.
    – Zeiss Ikon
    Oct 26, 2018 at 12:01
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    Remove the AC. Unplug the internal battery. Hold down the power button for 10-15 seconds. Reconnect the internal battery and AC, and retest. Report back to @heynnema
    – heynnema
    Oct 26, 2018 at 15:11
  • hello @heynnema , I just tried it and it didn't change anything. Thanks for the tip anyways!
    – Kevin J
    Oct 26, 2018 at 15:23

1 Answer 1

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It could be a faulty battery :( You can install tlp sudo apt install tlp once installed start it with this command sudo tlp start Then you can check the battery stats with this command sudo tlp-stat --battery that should tell you what condition it's in. good luck,

here is a link to all the commands for tlp.

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  • Thanks for your help. The battery status is : Charge = 51.5 [%] Capacity = 73.6 [%] So it's as if the battery was actually half charged, that's weird.
    – Kevin J
    Oct 26, 2018 at 12:39
  • Have you checked the charger also the wires are some times quite fragile.
    – kc1di
    Oct 26, 2018 at 14:21
  • yeah, I actually tried with another charger and nothing changed. I guess it's not a software issue after all, my battery must be broken.
    – Kevin J
    Oct 26, 2018 at 15:11

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