MY26 software update (week 36) for MY24-25

[PrudentOcean]

In support of the above and against previous posters saying preconditioning isn't worth it:

If the start SOC was the same the difference would be maybe 17 minutes saved? At the cost of 2kWh, 80p. Without preconditioning the ENTIRE charging curve is derated: ideally you pre-condition and plug in at <10% SOC and hit 270kW, failing that plug in at 18% and you get 250kW. Without preconditioning? Lucky to get 160kW. So with the real world example above, thats 19 minutes!

I've observed that even if the battery comes up to temperature during the non-preconditioned charge, the charge rate never recovers and remains on the derated curve.

You only have to look at the pro's like Bjorn Nyland driving 1000km and the fastest way (other than driving an ICE car ) is to precondition and ride the >200kW wave up to 50% and then drive on to the next one.

All the more reason for Porsche to give us control - or at the very least - visibility over the preconditioning process while driving. Would be sweet if stopping for >30 minutes to choose to not pre-condition before the charge stop and save ~2kWh.

One notable difference between the two charging sessions though is that one was from August and the other from the last day of November. The higher ambient temperatures in August will provide much of the same benefit as pre-conditioning the battery and get you close to the ideal charging temperature range.

Two charging sessions from similar low ambient temperatures would be more relevant.

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[TomekGnomek]

why do you not precondition your car? “departure time”

Becase it’s not always connected. Like when I arrive at the hotel late in the evening with low SoC and have to depart in the morning. This is just one scenario.

Also - setting the departure time does not precondition the battery for fast charging, just the cabin.

for me it is clear that as soon as the ambient temp drops below 12C the behavior of fast charging drastically changes

I can confirm this and also my observation is in low temps „just driving” does not provide enough heat for the battery to support optimal fast charging conditions.

 

[Yves]

One notable difference between the two charging sessions though is that one was from August and the other from the last day of November. The higher ambient temperatures in August will provide much of the same benefit as pre-conditioning the battery and get you close to the ideal charging temperature range.

Two charging sessions from similar low ambient temperatures would be more relevant.

That is what I posted, same day with and without pre conditioning even lower peak charging 130kw without the pre conditioning … as it is colder now …
So what was posted is valid … it really takes 2x longer and it’s not a few minutes difference as some claim.

 

[Petzi]

Becase it’s not always connected. Like when I arrive at the hotel late in the evening with low SoC and have to depart in the morning. This is just one scenario.

Also - setting the departure time does not precondition the battery for fast charging, just the cabin.

but why dont you charge overnight in your hotel?

i personally do not understand all this discussions. why cant you all handle this as intended by porsche and if this should not work complain. why park a car with empty battery over night and have to charge the cold car next morning?

if you use the charging planer you will arrive with optimal battery temperature at the charger. you can adjust minimal charge at target, so you do not have to come back to an empty battery in the morning

 

[floriankarch]

Mine at the dealer for 2 next days for this update ...

 

[Yves]

but why dont you charge overnight in your hotel?

i personally do not understand all this discussions. why cant you all handle this as intended by porsche and if this should not work complain. why park a car with empty battery over night and have to charge the cold car next morning?

if you use the charging planer you will arrive with optimal battery temperature at the charger. you can adjust minimal charge at target, so you do not have to come back to an empty battery in the morning

Because I, and some others, like Apple Maps more and we want manual control over the pre heating … in my iX I can use Apple Maps and the BMW infotainment will pop a manual pre heating button when it sees you will run low on battery.
Now if I had known I would have taken the Sport chrono package, in sport plus it will apparently do battery pre conditioning.
Not everybody can charge at home and when on a long trip you need to condition as well when ambient is below 16C or so …

 

[Petzi]

Because I, and some others, like Apple Maps more and we want manual control over the pre heating … in my iX I can use Apple Maps and the BMW infotainment will pop a manual pre heating button when it sees you will run low on battery.
Now if I had known I would have taken the Sport chrono package, in sport plus it will apparently do battery pre conditioning.
Not everybody can charge at home and when on a long trip you need to condition as well when ambient is below 16C or so …

so.. you bought the wrong car.

 

[Yves]

so.. you bought the wrong car.

Yes, I will swap it for one with sport plus.

 

[TomekGnomek]

but why dont you charge overnight in your hotel?

i personally do not understand all this discussions. why cant you all handle this as intended by porsche and if this should not work complain. why park a car with empty battery over night and have to charge the cold car next morning?

I know this may be a shocker but not every hotel has an EV charger

Also - I'm handling it as intended, I use the nav system to select fast chargers and it works great. SOMETIMES as it happens you have to leave the car overnight with low SoC and fast charge it in the morning which is also fine but takes longer and this observation contributes to this discussion. This is not something I usually do but it happened once or twice and hence I noticed fast charging a cold and not pre-heated battery takes a lot longer (which some suggested is not the case as fast charging itself quickly heats the battery - this is true to some extent only, you will not get an optimal charging curve this wasy).

Overall I agree this is not a big problem, just an observation.

 

[Degenatron]

One notable difference between the two charging sessions though is that one was from August and the other from the last day of November. The higher ambient temperatures in August will provide much of the same benefit as pre-conditioning the battery and get you close to the ideal charging temperature range.

Two charging sessions from similar low ambient temperatures would be more relevant.

I will perform a test and report back! Although despite there being approx ~10C difference in starting temp prior to pre-conditioning - even in August it still had to heat the battery from 20 to 30C. In November its 10 to 30C.

Conversely I find winter is better for rapid charging as the car will not rapidgate - the cooler air helps keep the battery near 30C. I had at least 2 sessions in France in July with 30C ambient where the battery hit >50C, front fans on jet plane mode and it still rapidgated.

Also, on my previous post I came across this graphic for Taycan regarding the difference in rapid charging time - 18 mins so almost bang on with my real world experience of 17 minutes:

 

[krissrock]

i do find all this interesting...cuz the times i've actually tried to put in a charger destination for pre-conditioning, i didn't see any change in the battery temp. And i'm pretty sure it wont pre-condition the battery if the SoC is below a certain %age. Just like you can't do cabin preconditioning if the SoC is lower than 20% iirc...
also, saying that Sport Chrono has battery pre-conditioning? i don't think that's the case. the pre-conditioning for the battery is the same for all models...with a charger put in on the map.
if you're doing cabin precondition/setting a departure time with Cabin preconditioning...you're still technically raising the battery temp because the car is ON and doing things...

 

[PrudentOcean]

Sport Chrono adds the Sport+ drive mode, which includes battery conditioning for maximum performance rather than charging speed. The temperatures for those two use cases overlap but aren’t identical, and the strategies will be different as well.

 

[MaccyT]

@krissrock the Sport Plus mode is pre heating the battery for sure. I’ve verified this after reading it here and indeed. I notice the battery temp rising after selecting the mode.
The reason is also understandable. It likes to keep the battery in the ideal range to give the best performance. The reason why you would select Sport Plus.

 

[krissrock]

i see...so not a pre-conditioning with the car off...the car is on and operating, and you put it in sport plus.

 

[MaccyT]

i see...so not a pre-conditioning with the car off...the car is on and operating, and you put it in sport plus.

Correct.
Pre-conditioning the car in my previous E-tron also heated up the battery but just a bit (using the excessive heat from pre-condition als traverses the battery pack) Not sure about the Macan but this morning I used pre-conditioning and battery temp was 11 degrees Celsius on entering the car but outside temp was 6 but I did not check up front if the battery cooled down to the outside temp or not.

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