12V battery goes from 13,6V to 14,4V all the time (sorted)

[Dee]

I'm monitoring my 12V battery in the tube on my dashboard, I always did.
Normally it's 13,6V, when it charges it's 14,4V, all ok.
After the recall of my HV battery and s/w updates last month I saw my 12V battery was charging, 14,4V in the tube.
All ok.
No problem.

Normally, when the 12V battery is full, the voltage drops to 13,6V.
But now, after a few weeks of monitoring it isn't dropping anymore, it stays at 14,3-14,4V.
I also noticed this in my loaner Taycan (2023) during the recall.
I reported it as a fault, along with some other minor issues on the loaner (if it keeps charging the 12V doesn't hold its charge, right?).
But now I see the same in my own car (2020).
I've never had any issues with the 12V battery, even after 4 weeks of not using the car in the past.
After the recall 10 days isn't a problem either.
I think there's a new method in charging the 12V battery but I was curious if other people have the same experience?

EDIT: sorted, battery is at 13,5V like it used to be.
All ok.

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[Vercingetorix]

 

[hrtlik]

I'm monitoring my 12V battery in the tube on my dashboard, I always did.
Normally it's 13,6V, when it charges it's 14,4V, all ok.
After the recall of my HV battery and s/w updates last month I saw my 12V battery was charging, 14,4V in the tube.
All ok.
No problem.

Normally, when the 12V battery is full, the voltage drops to 13,6V.
But now, after a few weeks of monitoring it isn't dropping anymore, it stays at 14,3-14,4V.
I also noticed this in my loaner Taycan (2023) during the recall.
I reported it as a fault, along with some other minor issues on the loaner (if it keeps charging the 12V doesn't hold its charge, right?).
But now I see the same in my own car (2020).
I've never had any issues with the 12V battery, even after 4 weeks of not using the car in the past.
After the recall 10 days isn't a problem either.
I think there's a new method in charging the 12V battery but I was curious if other people have the same experience?

EDIT: sorted, battery is at 13,5V like it used to be.
All ok.

Hello, how have you sorted it out? I have a same problem. It always shows 14V+.

 

[Dee]

Hello, how have you sorted it out? I have a same problem. It always shows 14V+.

Yes, it's back to normal, like I mentioned in that last post.

 

[hrtlik]

Yes, it's back to normal, like 13,4V.

Did you do something special or it sorted it out on its own?

 

[Dee]

Did you do something special or it sorted it out on its own?

Nope, I just drove like I used to.
After a while it's charged and drops to 13,4V again.

 

[BjörnfromHamburg]

Had the same issue 2-3 months ago.
I did not see the 14 since the battery-sensor update.

 

[hrtlik]

Had the same issue 2-3 months ago.
I did not see the 14 since the battery-sensor update.

Thank you, I will go to the dealer to get it done.

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