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Topic: Battery drain on ThinkPad E14 Gen1 while turned off (Read 785 times) previous topic - next topic
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Battery drain on ThinkPad E14 Gen1 while turned off

Laptop battery drains by around 10% overnight when I turn off the computer from Artix, but it doesn't happen when I turn off it from Windows.
  • I have disabled Wake-on-LAN and Always On USB.
  • I have TLP installed and running.
  • I haven't seen any errors related to this in logs.
  • I'm running the latest BIOS and Linux 5.13.

Has anyone encountered the same problem? Is there anything I could try?

Re: Battery drain on ThinkPad E14 Gen1 while turned off

Reply #1 –
The battery charge state display is probably some arbitrary calculation based on the detected voltage, so I wonder if it could be that the battery is self discharging slightly, as they typically do, and the Artix Linux readout is showing this while Windows has a less sensitive criteria and does not register it.
You could try this test: Turn off the laptop, remove the battery. Now nothing will affect it. Then turn on the laptop after replacing the battery. Try it with the 2 OS's and see the result. Another thought is how much power is consumed during shutdown and boot, although I would have assumed Linux would win on that, but who knows.
In my BIOS I have a setting to allow devices to be charged from USB's when the laptop is turned off, so if I had that enabled and anything plugged in, it would be taking power, although I'm not sure how it would affect your problem, unless an attached device (like a USB wifi stick or external HDD) was put into a power saving sleep mode state by Windows before shutdown

Re: Battery drain on ThinkPad E14 Gen1 while turned off

Reply #2 –
Thank you for your reply:)

I thought of this, but the removal of the battery would require me to disassemble the laptop, so I want to do that only as a last resort.
When I shut the computer down from Windows and boot into Artix hours later, no discharge is shown by Artix, but when I power off from Artix and then boot into Windows later, it shows less charge, so I don't think it's an issue of Artix being more sensitive.

Re: Battery drain on ThinkPad E14 Gen1 while turned off

Reply #3 –
Oh yes:
Lenovo E14 help videos
Just remove the 7 tiny screws without dropping them and prise free all the clips thus breaking some and scuffing the case edges then undo the little plug thing that will only take a few replacements before it gets dodgy etc. I was thinking the battery just unclipped...
But the first video explains you can disable the built in battery from the BIOS, so that would be the same as taking it out I expect.
From your further description it does sound like Artix is not fully powering off though.

Re: Battery drain on ThinkPad E14 Gen1 while turned off

Reply #4 –
Probably you're right, Artix doesn't power off the laptop completely. I've tried multiple ways of shutting down Artix, but none of them helped, so I don't really know what's actually happening. I've tried enabling every tweak in powertop, but nothing changes.