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34 Posts

02-24-2021

United Kingdom of Great Britain and Northern Ireland

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  • Message 1 of 6

ThinkBook 15 G2 battery draining when off

2021-04-05, 14:55 PM

Hi, I bought a ThinkBook 15 G2 laptop a few weeks ago and ended up sending it back to the supplier for an exchange, due to the battery draining when the laptop was completely turned off. I tried everything, such as turning off wake up on LAN and always on USB, but the battery would still draining around 2-3% per 24hours of being off.

 

My replacement ThinkBook 15 G2 laptop arrived on Friday and after setting it all up, I left it off until today (Monday) and the battery has drained from 100% down to 92%.

 

Have I been extremely unlucky and just got two machines that are faulty in some way, or is this a general issue with all ThinkBook 15 G2 laptops? Or, is it completely normal for a laptop to drain 2-3% every 24hours when off?

 

If this is not normal, will Lenovo be producing a BIOS update to fix this?

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3540 Posts

08-02-2018

United States of America

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Re:ThinkBook 15 G2 battery draining when off

2021-04-06, 11:31 AM


Hello simontakel!


Greetings


Just to make sure everything is up to date, run the update from the Lenovo Vantage app and install all available updates especially the BIOS and Power management.

 

You can also manually install it here: https://pcsupport.lenovo.com/us/en/

 

 

 


Jwes_Lenovo



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34 Posts

02-24-2021

United Kingdom of Great Britain and Northern Ireland

40 Signins

330 Page Views

  • Posts: 34
  • Registered: ‎02-24-2021
  • Location: United Kingdom of Great Britain and Northern Ireland
  • Views: 330
  • Message 3 of 6

Re:ThinkBook 15 G2 battery draining when off

2021-04-06, 13:23 PM

Hello, all updates were installed on the first laptop and also on the second laptop.


I still got the same discharge of battery on both machines.


Is this a problem with this model of Lenovo laptop, or is ‘normal’?

 

It can’t be a coincidence that I’m experiencing the same thing with both laptops.

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3540 Posts

08-02-2018

United States of America

783 Signins

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  • Message 4 of 6

Re:ThinkBook 15 G2 battery draining when off

2021-04-07, 18:55 PM

The 2-3% battery drain per day seems to be fine with me. The battery will lose capacity when left in a system without the AC power attached because the system will draw a small amount of current that will deplete the capacity over time. Batteries will lose some charge over time due to self-discharge; this is normal.

 

Please refer to this link: https://support.lenovo.com/us/en/solutions/ht080185-troubleshooting-battery-issues-thinkpad

 

 


Jwes_Lenovo



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34 Posts

02-24-2021

United Kingdom of Great Britain and Northern Ireland

40 Signins

330 Page Views

  • Posts: 34
  • Registered: ‎02-24-2021
  • Location: United Kingdom of Great Britain and Northern Ireland
  • Views: 330
  • Message 5 of 6

Re:ThinkBook 15 G2 battery draining when off

2021-04-08, 11:25 AM

Ok, so you don't think anything is wrong then?

 

I used the laptop all day yesterday on AC and the battery therefore didn't drop below 100%, this morning when I turned on the laptop, it was down to 99%.

The battery report in Vantage says that the battery has had no usage at all (as the laptop has always been used on AC) - so this 1% discharge overnight must just be the battery depleting?

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3540 Posts

08-02-2018

United States of America

783 Signins

18342 Page Views

  • Posts: 3540
  • Registered: ‎08-02-2018
  • Location: United States of America
  • Views: 18342
  • Message 6 of 6

Re:ThinkBook 15 G2 battery draining when off

2021-04-08, 18:31 PM

Most likely it is. The Vantage app is a reliable tool to check the health of the battery. 

 


Jwes_Lenovo



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