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My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-02, 4:57 AM

This is right out of the box, and it's not that I lose power while its shutdown. I just lose a percentage whenever I just shut it down and reboot it. Is this a result of fast-boot being on? Is this normal? I just bought my laptop. 

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2695 Posts

12-13-2016

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Re: My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-02, 13:11 PM

Fast boot does use a tiny bit of power. It would depend on how long it's been off.  If you shut it down one day and start it the next and it's down 10%, then there might be an issue. 


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Re: My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-04, 5:01 AM

It happens whenever I shut down and restart the laptop, regardless of time. So, I could shut down and restart it within a second or two and I'd lose a percent of battery or a couple minutes of life. I haven't noticed significant battery lost overnight while it is shut down. 

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Re: My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-04, 14:22 PM

1% is well within the margin of error for the battery gauge. Pretty sure part of its calculations include processor use vs time. Shutdowns and reboots are a little processor-intensive, so losing a few minutes due to one isn't all that surprising. If it really concerns you, you could try disabling a lot of the stuff that launches at startup - virus scanners, etc. Turn off Fast Boot. You could also put it into Airplane Mode before shutting it off to stop the WiFi/BT card from trying to contact the mothership during boot. Lotta work to save half a percent, though. 


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I am not an employee or agent of Lenovo. I love beer.

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Re: My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-05, 17:00 PM

Yeah, that would be a lot of work.  I thought maybe I was just worrying for nothing, but now I know. Thanks.

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05-07-2018

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Re: My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-18, 18:58 PM

The exact same thing happens to me.  1 to 1.5 % loss.  Unless it is charged to 100% and shutdown.  Then it starts at 100%.  But then the 100% dives to 97% quickly.  I have no idea what this is.  I'm going to try airplane mode!  On the family mac, it restarts exacty where it shut down.  More annoying than anything else!

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Re: My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-18, 19:11 PM

A few other things to check that consume battery at startup:

  • Virus scanners I mentioned.
  • Backup programs
  • Cloud services. (OneDrive, Dropbox.. they all want to synchronize at boot-up)
  • Windows Update
  • Lenovo-specific programs, especially if you have updates set to install automatically
  • Shared programs across computers, such as OneNote
  • Chrome (unless you have background permissions turned off)
  • Windows Store which looks for any apps that need updating.
  • Office 365 which also contacts the MotherShip at boot.
  • Others I don't own so I don't think about them

Honestly, if you have even half of those, I'm surprised it only drops 3%. ;)


____________________________________
I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo. I love beer.

Using Browser Search To Find Answers in the Lenovo and Moto Communities
Check out our new Recent Service Tips Area ..your issue may already be solved!
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8 Posts

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  • Message 8 of 8

Re: My Yoga's 920's battery drops a percentage whenever I shutdown and reboot.

2018-05-19, 1:43 AM

Well,  usually my pc drips 1 - 1.5% at start up.  Unless it is charged to 100%  Then it holds there generally.

 

I thought I was going crazy!

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