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107 Posts

12-18-2017

China

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  • Message 21 of 31

Re:P14s severe battery drain when powered off

2021-05-12, 7:45 AM

Dear, could you downgrade to BIOS 1.29 to see issue can fix? similar issue report by following link and plan to fix by new BIOS next week.

T14 AMD battery drain in standby (Linux)-English Community (lenovo.com)

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42 Posts

02-24-2021

United Kingdom of Great Britain and Northern Ireland

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  • Message 22 of 31

Re:P14s severe battery drain when powered off

2021-05-12, 7:56 AM

@jan-lenovo - will there also be a fix for the BIOS released for the ThinkBook G2, as I have been reporting the same issue with my device?

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19 Posts

04-28-2021

Netherlands

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  • Message 23 of 31

Re:P14s severe battery drain when powered off

2021-05-12, 12:09 PM

Hi Jan,

 

Thanks for your message! The T14's in the other forum thread indeed seem to have a similar issue.

 

As happy as I'd like to downgrade my BIOS version; as far as I can tell there's only version v1.30 for my system: Drivers & Downloads

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107 Posts

12-18-2017

China

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  • Message 24 of 31

Re:P14s severe battery drain when powered off

2021-05-13, 6:10 AM
Dear, you can download BIOS 1.29 from this page. https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-p-series-laptops/thinkpad-p14s-type-20y1-20y2/20y1/20y1cto1ww/pf2tl4ty/downloads/ds544977-bios-update-utility-bootable-cd-for-windows-10-64-bit-thinkpad-t14-gen-1-types-20ud-20ue
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19 Posts

04-28-2021

Netherlands

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  • Message 25 of 31

Re:P14s severe battery drain when powered off

2021-05-14, 15:29 PM

Ok, thank you. I will try this in the next couple of days after I'm back home again...still on the road now, depending on the laptop.

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21 Posts

04-05-2021

Japan

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  • Message 26 of 31

Re:P14s severe battery drain when powered off

2021-05-17, 2:38 AM

Hi, I can confirm, that on my P14s, downgrading BIOS from 1.30 to 1.29 helped. Now it does not loose nearly anything while being powered off. Still it losses more power than it would be appropriate during sleep mode (Windows StandBy sleep mode). I would also like to use Linux sleep mode (S3) on Windows because Windows Standby occasionally spins the fans during sleep time and that is not something I want. Problem is, that Linux sleep mode used in Windows crashes the laptop on both BIOS versions. 1.29 and 1.30.

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19 Posts

04-28-2021

Netherlands

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  • Message 27 of 31

Re:P14s severe battery drain when powered off

2021-05-23, 13:15 PM

A couple of days ago I noticed that there was an upgrade of the BIOS available (v1.32) that mentions the battery drain fix. I Installed this version now.

 

I haven't had the chance to properly measure the draining rate now, but it seems to be better now (losing a percent or less overnight). I will carry out a proper test later this week.

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21 Posts

04-05-2021

Japan

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  • Message 28 of 31

Re:P14s severe battery drain when powered off

2021-05-23, 15:06 PM

Hi, that is true. I am now running BIOS 1.32 on my P14s. It is not losing power (at least not significantly) during the POWER OFF. Same as it was in BIOS 1.29.

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102 Posts

02-14-2021

Ukraine

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  • Message 29 of 31

Re:P14s severe battery drain when powered off

2021-05-23, 16:21 PM

update: sorry, posted in the wrong thread.

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19 Posts

04-28-2021

Netherlands

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  • Message 30 of 31

Re:P14s severe battery drain when powered off

2021-06-03, 18:29 PM

OK, I did a test with v1.32. Charged it to 100%, didn't use it for seven days, just powered it on once daily to check the battery level in the login screen, then immediately powered down the machine.

 

Over the course of seven days the battery level dropped from 100% to 97%, nice. That's the draining rate I was expecting when I bought this machine. So the update works, thanks.

 

Still I think it's not a good sign that a piece of hardware is released to the world with such an obvious issue. It smells like an insufficiently tested premature release which unnecessarily hurts the brand Lenovo. There will be bugs, there will always be bugs. And some are horrible, deep down, hidden in some corner to appear when some customer somewhere triggers it in a random situation, perhaps even noticeable after weeks -- those are the worst ones. I'm not expecting anyone to find these before the release of a system. But an obvious battery drain issue that happens with default BIOS settings? I would have expected the QA department to catch that.

 

Still, thanks very much for reacting here and providing a fix in the end. Cheers!

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