odd battery problem: sudden drop in capacity - current capacitiy way over design / full charge capacity

shadowlord

2[H]4U
Joined
Jan 6, 2005
Messages
3,097
From time to time my Lenovo x1 carbon (2017) has an odd battery problem where the remaining capacity drops within minutes from somewhere in the 30% range to the point where it automatically powers down. Nothing i tried so far did fix this. Since it only happens randomly i often forget about it until it happens again.

Today i think, i stumbled upon what might be an explanation. It seems the unit thinks it has way more charge than actually possible.

now 125% seems very odd for a 3 year old battery. I guess my problem with the random charge drop is a result of a too high reported charge level. Sometimes during the discharge cycle the battery electronics notice the difference and windows shuts down.

Is my battery the culprit here or the electronics in the laptop itself. ?

The problem being random could be that i don't charge to 100% often. i mostly disconect it when the led that indicates 80% charge level comes on.

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NattyKathy

Gawd
Joined
Jan 20, 2019
Messages
942
that is odd... does the laptop have an option in the UEFI to calibrate battery or something like that?
 

tunatime

Well...OK
Joined
Sep 15, 2011
Messages
4,877
From time to time my Lenovo x1 carbon (2017) has an odd battery problem where the remaining capacity drops within minutes from somewhere in the 30% range to the point where it automatically powers down. Nothing i tried so far did fix this. Since it only happens randomly i often forget about it until it happens again.

Today i think, i stumbled upon what might be an explanation. It seems the unit thinks it has way more charge than actually possible.

now 125% seems very odd for a 3 year old battery. I guess my problem with the random charge drop is a result of a too high reported charge level. Sometimes during the discharge cycle the battery electronics notice the difference and windows shuts down.

Is my battery the culprit here or the electronics in the laptop itself. ?

The problem being random could be that i don't charge to 100% often. i mostly disconect it when the led that indicates 80% charge level comes on.

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Change the battery it's probably having a cell go bad. Or see if there is some type of calibration/run it though a few 80%DoD cycles and see if that helps
 

shadowlord

2[H]4U
Joined
Jan 6, 2005
Messages
3,097
Well, i celebrated to soon.
The new battery did not fix the problem. Battery level dropped from 51% to 6% within 10 minutes today.

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Last edited:

Nobu

Supreme [H]ardness
Joined
Jun 7, 2007
Messages
6,841
Could be an issue with the firmware or OS drivers. Has a newer fw been released which mentions the battery/power?

If not, don't upgrade the firmware just yet. That could cause more problems than it solves.
 

shadowlord

2[H]4U
Joined
Jan 6, 2005
Messages
3,097
i was running the penultimate bios version, but just upgraded.
I don't have high hopes though since no battery problem fix was mentioned in the text file.
 
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