[Solved?] Battery readout went from 100% down to 0% and back to 100%

hjk321 · 2025-03-15 22:40:37

I unplugged my fully charged laptop, and to my surprised within 3 minutes it hard shutdown, like black screen and everything, no sign of life. I plug back in and reboot and it says 1% remaining with 10+ hours to recharge. Then a few minutes later it said 100% again. How can I diagnose the problem?

Zen kernel
Battery vendor COMPAL
Model PABAS0241231
Serial 41167
Health: 54% (Last full charge was 47Wh versus 87Wh when new)

Last edited by hjk321 (2025-03-17 15:54:53)

seth · 2025-03-16 07:25:16

Sounds as if it need recalibration, check

tail /sys/class/power_supply/BAT*/*

and see https://bbs.archlinux.org/viewtopic.php … 8#p2209668 and subsequent posts itt.

hjk321 · 2025-03-17 15:54:25

Well, I can't replicate the issue anymore, so I'll have to write it off as a one-time bios oddity (since I think the hard shutdown happened at the bios level). I recall this happening once or twice back when I had windows installed on this hardware.

Last edited by hjk321 (2025-03-17 15:55:38)

luigibu · 2025-12-13 13:01:24

Hi! Im having the same issue. Did you manage to figure out what is going on? Any tip is more than welcome.

seth · 2025-12-13 17:22:36

seth wrote:

Sounds as if it need recalibration, check
tail /sys/class/power_supply/BAT*/*
and see https://bbs.archlinux.org/viewtopic.php … 8#p2209668 and subsequent posts itt.

Arch Linux

#1 2025-03-15 22:40:37

[Solved?] Battery readout went from 100% down to 0% and back to 100%

#2 2025-03-16 07:25:16

Re: [Solved?] Battery readout went from 100% down to 0% and back to 100%

#3 2025-03-17 15:54:25

Re: [Solved?] Battery readout went from 100% down to 0% and back to 100%

#4 2025-12-13 13:01:24

Re: [Solved?] Battery readout went from 100% down to 0% and back to 100%

#5 2025-12-13 17:22:36

Re: [Solved?] Battery readout went from 100% down to 0% and back to 100%

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