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#1 2025-01-30 23:36:38

alyxv
Member
Registered: 2025-01-30
Posts: 1

ThinkPad 470 BAT0 stuck at 54% (waiting to charge)

Since almost over a year my internal battery is not charging or powering my ThinkPad.

I always have this Power Manager output for BAT0:
BAT0

I also get the following output from tlp command:

# tlp recalibrate BAT0
Setting temporary charge thresholds for BAT0:
  start =  96 (no change)
  stop  = 100 (no change)
Error: discharge BAT0 malfunction -- check your hardware (battery, charger).
Battery recalibration aborted.

Checking the Diagnostics UEFI on boot shows everything but a battery module for testing.

If I unplug the external battery the laptop turns off immediately so I guess my internal battery is just dead.

These are my questions:

  • Why is BAT0 still shown with the information from Power Manager?

  • Is the battery just dead or could it be a problem with the motherboard? What can I do to be sure?

  • Why does it not show up in the diagnostics menu?

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#2 2025-01-31 19:49:21

jonno2002
Member
Registered: 2016-11-21
Posts: 735

Re: ThinkPad 470 BAT0 stuck at 54% (waiting to charge)

i hate to quote reddit but it seems to be the relevant info:
https://www.reddit.com/r/thinkpad/comme … confusion/

this part mainly:

I switched from Legacy BIOS to UEFI, updated my bios and firmware to the latest versions, re-installed Linux, and batteries are now switching as needed, without need for the above script.

also this thread:
https://forums.linuxmint.com/viewtopic.php?t=347743

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