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07-29-2017

DK

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Thinkpad P50 - Battery threshold option turning off randomly.

2017-07-29, 11:31 AM

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

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6350 Posts

10-29-2009

NC

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

2017-07-31, 19:08 PM

What OS?  Win7 or Win10?

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4 Posts

07-29-2017

DK

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

2017-08-01, 16:49 PM
Hi. I'm running Win10 on this device.
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699 Posts

03-11-2008

CN

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

2017-08-04, 0:59 AM

What is the bios version of your system?

 

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4 Posts

07-29-2017

DK

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

2017-08-04, 21:56 PM
Hi hzfdbd,

I'm running:
BIOS Version/Date LENOVO N1EET70W (1.43 ), 12/07/2017
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6350 Posts

10-29-2009

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

2017-08-09, 12:21 PM

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?

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4 Posts

07-29-2017

DK

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  • Message 7 of 8

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

2017-08-09, 15:53 PM
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.
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  • Message 8 of 8

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

2017-08-09, 17:02 PM

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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