Retrofit of the J1II HV Battery into J1I vehicles

[azraeil]

Received info that Porsche will be rolling this out soon. Apparently the J1I battery production has ceased so to ensure the long term supply of spare parts for the J1I, Porsche has come up with a retrofit solution using the latest J1II HV Battery.

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[CaliPorsche]

Well…….. This is one of those situations where I hope for it to be true ……..
but either wisdom or cynicism tells me not to be optimistic ?

 

[azraeil]

Same here but I was told this info will be coming out soon from Porsche

 

[love2scuba]

No gain of range or performance? Glad they are making it available, but sad that they cannot be used to their fullest potential.

 

[azraeil]

No gain of range or performance? Glad they are making it available, but sad that they cannot be used to their fullest potential.

Yes, that is unfortunate .... does this mean tha BMS will only see the 83 kWh nett battery instead of the 95 kWh nett on the new J1II?

 

[love2scuba]

That is my best guess. What might be a good thing, is that as the battery ages, you might get some of the "extra" back to keep the total near the original spec.

 

[Sace]

Well, fingers crossed that my original battery survives long enough to get the updated version.

It makes sense that they do this. If the new battery is both lighter, more reliable and (maybe) more cost efficient and they fit perfectly, then why would they continue to produce the old version.

 

[Jasper4S]

Nonsense, Porsche is calling it J1.2 not J11 and J1.2 is not next gen, just a facelift. So this screenshot seems like a fake with false information.

 

[asiviero]

Nonsense, Porsche is calling it J1.2 not J11 and J1.2 is not next gen, just a facelift. So this screenshot seems like a fake with false information.

Porsche call the facelift, J1 II (double II is roman 2) see the screenshot on their website when you search for taycan specific generation.

I'm not saying the information are legit, but you cannot say is fake as your statement is wrong.

 

[chun]

Nonsense, Porsche is calling it J1.2 not J11 and J1.2 is not next gen, just a facelift. So this screenshot seems like a fake with false information.

In switzerland it is j1 II on official porsche documents.

 

[chun]

So it sounds like they will be using J1 II battery cells or modules AND J1 I spare parts (converter, etc.).

So that would explain the lack of performance improvements, as J1 II has a newer:

• converter, more powerful
• rear axle motor, more powerful
• upgraded BMS

However, as far as I know, the battery tray on J1 II is the same minus the protection plate, accommodating the same number of modules, 33 - with 396 cells, but with larger capacity cells - same number of cells, 396.

So we can assume they will be giving us 2 less modules, to maintain the same overall capacity of the battery as a brand new j1 I taycan

Now here's the question, what's the chance you can get just a 3rd party shop to add the 2 missing modules and get the extra range anyway? Because it's clear they won't be doing it as then the justification of j1 II existing would be gone.

Quite curious what the price of this retrofit will be, or if it will be exclusively for warranty claims.

 

[chun]

Will add, an indirect performance improvement will be charging curve and temperature limits of the battery.

The charging curve is controlled by the BMS, based on battery temperature, but the new chemistry has a much wider ideal temperature bracket, which would allow peak charging speeds from lower temps, resulting in the battery heating up slower and therefore maintainign peak 270kw charging speed for longer.

But they do say flashing new software, so maybe the BMS software will be updated to either allow for full use of the new chemistry, or restrict the new chemistry to performance of old chemistry via artificial limits

Will also add that Porsche is already using combined cells for warranty claims - NOT combined chemistry. As in 2020 cars have 1 type of cell design, and 2021+ cars have a different type of cell design, but they are the same chemistry. So unlikely we will see combined chemistries for warranty claims, but who knows.

 

[whitex]

So it sounds like they will be using J1 II battery cells or modules AND J1 I spare parts (converter, etc.).

So that would explain the lack of performance improvements, as J1 II has a newer:

• converter, more powerful
• rear axle motor, more powerful
• upgraded BMS

However, as far as I know, the battery tray on J1 II is the same minus the protection plate, accommodating the same number of modules, 33 - with 365 cells, but with larger capacity cells - same number of cells, 396.

So we can assume they will be giving us 2 less modules, to maintain the same overall capacity of the battery as a brand new j1 I taycan

Now here's the question, what's the chance you can get just a 3rd party shop to add the 2 missing modules and get the extra range anyway? Because it's clear they won't be doing it as then the justification of j1 II existing would be gone.

Quite curious what the price of this retrofit will be, or if it will be exclusively for warranty claims.

If the 2 less modules end up reducing the overall battery voltage, it will actually be a performance downgrade for any J1 car with the P+ battery (less power at same current output).

 

[chun]

If the 2 less modules end up reducing the overall battery voltage, it will actually be a performance downgrade for any J1 car with the P+ battery (less power at same current output).

Very good point, but then again, I don't believe Porsche will be putting 2 whole modules that they would never enable to be used, just to maintain overall voltage.

Let's see what they say when this comes out officially, if it does.

 

[chun]

Same here but I was told this info will be coming out soon from Porsche

Another "leak" seems to be that the Central vehicle dynamics computer (HCP1) on the new Macan EV fails and is a replacement component. That failing while you take a curve, and your suspension suddenly miss-behaves sounds like a nightmare.
I thought this was a brand new EV tested for 1mil km or something? ?

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