Following the battery cells changed: Do you still trust your Taycan J1.1

[AnloTaycan2022]

Hello, I have a 4SCT 2022 with 72,000Km and I got this week-end the deadly Electrical system issues with some dead battery cells. There are 396 cells in a Taycan and replacing a few is just a very small percentage then. Consequently, there is a strong probability that it comes back for more cells in a few monts or so. For the one who got some cells replaced, do you believe I am paranoid or it is in fact just a matter of time before the same bad scenario comes back? I am personally considering moving to the J1.2 which has a battery chemistry different and of a more recent generation.???

Sponsored

 

[BjörnfromHamburg]

Hello,
all your questions and anxieties are well documented in this forum.
So well, you'd have a few evenings of reading stuff.
In short: only "modules" will be exchanged. If too many are corrupt, you will get a new battery.
You can start reading posts/ threads from @ct14garage
It will take you down the rabbit-hole.

 

[prj]

Dead cells have nothing to do with "chemistry" and everything to do with the fact that LG Chem made a lot of mistakes during the assembly process of the pouch cells with torn anode tabs and so on.

J1.2 should not have the issue anymore as the issue was identified before those batteries went into series production.

 

[TaYcanAficionado]

a number of cars across different brands (Porsche, Jaguar, chevy bolt etc) was plagued by the LG torn anode tab problem; mainly manufactured between 2018 and 2021. After 2022 the problem appears to have been sorted out; a cell may fail anyway, not because of the LG manufacturing issue, but for a number of reasons (as is the case with any ICE vehicle and any of their parts). A lot of EVs face module failures, just not as pronounced as with the LG-manufactured ones during the said period.
It seems that the number of cells that suffer from this problem is relatively small at the end of the day - maybe 2% (???); but in the forums, people that have a problem tend to exaggerate.
If we had a way of getting a great number of taycan owners - not only those on the forum, but a really greater number - cast their vote on whether they faced module failures or not, I do believe that the failure percentage would be very small.
My 2021 4s' HV battery has been flawless from day one, no problems at all.
But I agree that the mere idea that my car may have a cell with a torn anode tab but the problem hasn't surfaced yet is enough to cause anxiety.
So yes, I trust my taycan's battery. FOR NOW. Hoping that my car belongs to the 98% that won't face the dreaded torn anode tab problem.

 

[chun]

a number of cars across different brands (Porsche, Jaguar, chevy bolt etc) was plagued by the LG torn anode tab problem; mainly manufactured between 2018 and 2021. After 2022 the problem appears to have been sorted out; a cell may fail anyway, not because of the LG manufacturing issue, but for a number of reasons (as is the case with any ICE vehicle and any of their parts). A lot of EVs face module failures, just not as pronounced as with the LG-manufactured ones during the said period.
It seems that the number of cells that suffer from this problem is relatively small at the end of the day - maybe 2% (???); but in the forums, people that have a problem tend to exaggerate.
If we had a way of getting a great number of taycan owners - not only those on the forum, but a really greater number - cast their vote on whether they faced module failures or not, I do believe that the failure percentage would be very small.
My 2021 4s' HV battery has been flawless from day one, no problems at all.
But I agree that the mere idea that my car may have a cell with a torn anode tab but the problem hasn't surfaced yet is enough to cause anxiety.
So yes, I trust my taycan's battery. FOR NOW. Hoping that my car belongs to the 98% that won't face the dreaded torn anode tab problem.

The problem was sorted out only in 2024 Q2

Most 2024 Q3 taycans were still included in the recall, as they got batteries built in q2

And it has been discussed several time; the amount of cars affected is much higher than 2%.

 

[prj]

Hoping that my car belongs to the 98% that won't face the dreaded torn anode tab problem.

According to data gathered it is far more than 2% that have battery issues.

 

[SergeyIndy]

When you say trust, the best you can do is start measuring your SoH and looking at cell graphs by getting an OBD and CarScanner app.

 

[Dee]

And it has been discussed several time; the amount of cars affected is much higher than 2%.

How do you know?
Where's your data?
Is that based on data or just a wild guess?
According to the battery monitoring thread of CT14 garage the majority of batteries are perfectly fine.

 

[prj]

According to the battery monitoring thread of CT14 garage the majority of batteries are perfectly fine.

That's not what that data showed.
There were 2% with low isolation concurrently.
So extrapolating that number means that there were 2% bad batteries in a short timespan.
Which means that a LOT more than 2% have had modules or batteries replaced.

Also, I have some information from inside Porsche Engineering. This 2% is a completely made up number with no basis in reality whatsoever. Someone randomly came up with it and now it is being regurgitated on this forum on a daily basis.

The real number is close to ten times that as a percentage of cars that had battery work done so far.

 

[Dee]

My 2019 battery was fine but only one module was replaced in january.
I've always trusted my Taycan and that hasn't changed.

 

[prj]

My 2019 battery was fine but only one module was replaced in january.
I've always trusted my Taycan and that hasn't changed.

So it's not the full original battery anymore and the car had battery issues -> work done.

 

[Dee]

That's not what that data showed.

Yes it does.
The data that Cris uses in his statistics thread include his own cases, the ones he has been working on, not only from this forum.
According to the thread on this forum the majority of the batteries are perfectly fine.

 

[Dee]

So it's not the full original battery anymore and the car had battery issues -> work done.

The question was if I trusted my battery.

 

[prj]

Yes it does.
The data that Cris uses in his statistics thread include his own cases, the ones he has been working on, not only from this forum.
According to the thread on this fotum most batteries are perfectly fine.

Sigh, you do not understand statistics at all.
The question is not about how many cars are driving around with a bad battery, it's how many cars had a cell or battery failure period.

And that's a very significant amount of J1.1 Taycans. Yours included.
For trusting the car you don't care that it is working NOW, you care about how it will work in the next e.g. 1-2 years.
And there is about a 1 in 5 to 1 in 4 chance that either work has already been done on the battery or will be done within the warranty period.

 

[prj]

P.S. The right thing to do would have been to replace the batteries on every single J1.1 and hold LG accountable.
Just as was done by GM with the Spark EV, with a settlement of 1.9 billion $.

The problem is exactly the same on the Taycan:

A combination of production issues (such as a torn anode tab, a folded cathode tab, a peeled-off cathode or a double production topic pouch crack) was found in some of the batteries' high-voltage modules. Over the service life of the vehicle, these issues, when combined, can increase the risk of fire.

However, the Taycan battery is better/safer designed, so there has not been a massive amount of battery fires.

Sponsored