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Posts: 5
Registered: ‎02-20-2012
Location: Russia
Message 1 of 6 (352 Views)

T420s discharging battery while power off

Hi!
I have T420s with ID: 417173G. There is a problem: when machine is fully power off (not hybernate or sleep mode), main battery is discharged -35% after 72 hours. Does it's a normal?

 

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Guru
Posts: 9,240
Registered: ‎12-26-2009
Location: Toronto, Canada
Message 2 of 6 (347 Views)

Re: T420s discharging battery while power off

Do you have a fingerprint reader?
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Guru
Posts: 2,516
Registered: ‎03-19-2009
Location: Idar-Oberstein, Germany
Message 3 of 6 (339 Views)

Re: T420s discharging battery while power off

Check the global setting in the powermanager, whether "Activate USB permanently" is marked. - Disable it.

 

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Posts: 5
Registered: ‎02-20-2012
Location: Russia
Message 4 of 6 (331 Views)

Re: T420s discharging battery while power off

[ Edited ]

ColonelONeill wrote:
Do you have a fingerprint reader?

Yes. And green light is on, when power off. But -35% for green LED?!

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Posts: 5
Registered: ‎02-20-2012
Location: Russia
Message 5 of 6 (330 Views)

Re: T420s discharging battery while power off


Mornsgrans wrote:

Check the global setting in the powermanager, whether "Activate USB permanently" is marked. - Disable it.

 


"Disabled" always - not needed for me...

What's DOS?
Posts: 1
Registered: ‎10-06-2012
Location: Moscow
Message 6 of 6 (197 Views)

Re: T420s discharging battery while power off

Hi Cactus,

Did you finally get the response to this and found how to fix the problem?
I have the same, also no permanent USB and rolled off all biometrics, but still the same -it looses about 20% a day
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