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cjsmontesa
Fanfold Paper
Posts: 12
Registered: ‎05-01-2018
Location: US
Views: 558
Message 1 of 8

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

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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Community Moderator
Posts: 1,660
Registered: ‎12-13-2016
Location: US
Views: 516
Message 2 of 8

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

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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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.
cjsmontesa
Fanfold Paper
Posts: 12
Registered: ‎05-01-2018
Location: US
Views: 490
Message 3 of 8

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

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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Views: 477
Message 4 of 8

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

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. 


____________________________________
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.
cjsmontesa
Fanfold Paper
Posts: 12
Registered: ‎05-01-2018
Location: US
Views: 455
Message 5 of 8

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

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

JonZ68
Paper Tape
Posts: 8
Registered: ‎05-07-2018
Location: US
Views: 385
Message 6 of 8

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

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!

Community Moderator
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Posts: 1,660
Registered: ‎12-13-2016
Location: US
Views: 381
Message 7 of 8

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

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%. Smiley Wink


____________________________________
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.
JonZ68
Paper Tape
Posts: 8
Registered: ‎05-07-2018
Location: US
Views: 369
Message 8 of 8

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

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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