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Jespertj
Blue Screen Again
Posts: 4
Registered: ‎07-29-2017
Location: DK
Views: 759
Message 1 of 8

Thinkpad P50 - Battery threshold option turning off randomly.

Hi.

 

I'm having issues with my battery threshold option. I want the battery to stop charging when it reaches 80%. However, it will never keep the setting on forever. I randomly find out that it charges the battery to 100% instead of stopping at 80%. This is most likely to happen when my Thinkpad P50 is turned off and is charging. Although, it is not every time that it simply charges to 100% instead.

 

Can someone help me figure out why on earth it keeps turning the battery threshold option completely off? I want to have the option on permanently so that my battery will live longer.

 

Best regards,

Jesper

Lenovo Staff
Lenovo Staff
Posts: 6,158
Registered: ‎10-29-2009
Location: NC
Views: 708
Message 2 of 8

Re: Thinkpad P50 - Battery threshold option turning off randomly.

What OS?  Win7 or Win10?

Jespertj
Blue Screen Again
Posts: 4
Registered: ‎07-29-2017
Location: DK
Views: 691
Message 3 of 8

Re: Thinkpad P50 - Battery threshold option turning off randomly.

Hi. I'm running Win10 on this device.
Lenovo Employee hzfdbd
Lenovo Employee
Posts: 570
Registered: ‎03-11-2008
Location: CN
Views: 653
Message 4 of 8

Re: Thinkpad P50 - Battery threshold option turning off randomly.

What is the bios version of your system?

 

Jespertj
Blue Screen Again
Posts: 4
Registered: ‎07-29-2017
Location: DK
Views: 635
Message 5 of 8

Re: Thinkpad P50 - Battery threshold option turning off randomly.

Hi hzfdbd,

I'm running:
BIOS Version/Date LENOVO N1EET70W (1.43 ), 12/07/2017
Lenovo Staff
Lenovo Staff
Posts: 6,158
Registered: ‎10-29-2009
Location: NC
Views: 602
Message 6 of 8

Re: Thinkpad P50 - Battery threshold option turning off randomly.

Jespertj

 

Is your system always connected to AC power?

Or does this problem only happen after you unplug AC power and run the battery down, and then reconnect AC power?

Jespertj
Blue Screen Again
Posts: 4
Registered: ‎07-29-2017
Location: DK
Views: 593
Message 7 of 8

Re: Thinkpad P50 - Battery threshold option turning off randomly.

Hi someotherguy,

I find this problem to be rather inconsistent. However, sometimes I find out that it has charged itself to a full 100% when I have run the battery down, put in the charger and shut it off before it reaches the desired 80%.

There are also times where I only find out afterwards that it has shut the threshold off while I'm using it, and thereby reached 100% battery charge.

PS. My system is not always connected to AC power. So as you see, I find this issue to be rather inconsistent.
Lenovo Staff
Lenovo Staff
Posts: 6,158
Registered: ‎10-29-2009
Location: NC
Views: 591
Message 8 of 8

Re: Thinkpad P50 - Battery threshold option turning off randomly.

Jespertj

 

I found that if I let the battery drain all the way to 0%, and then charge it, it will charge to 100% regardless of the battery charge threshold setting.  But so far I haven't seen this problem in any other scenario.  Do you ever let the battery drain all the way to 0%?

 

 

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