How to use charging timers

[targa666]

When I precondition it on long road trips, it often goes 40+ degrees.
What makes you think it was not preconditioned? If the temp was 12* I would agree. 43 sounds a little high but not unexpected.

Because the ventilators started cooling down immediately I assumed the battery temp was too high for charging.
good to hear that it’s actually fine temp. thanks!
(So much to learn!)

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[W1NGE]

I don’t believe the battery would heat up so much in 3 km’s of 50km/h roads.
On top of that. When I arrived home the nav was still redirecting me to the DC station so it should have been preconditioned in any way.
i’ll keep an eye on it.

What was the ambient temp?

Much information missing.

 

[W1NGE]

When I precondition it on long road trips, it often goes 40+ degrees.
What makes you think it was not preconditioned? If the temp was 12* I would agree. 43 sounds a little high but not unexpected.

32C is the normal target to optimise charging speed at DC EVSEs. There may be a variance between J1.1 and J1.2 Taycans due to the battery type / chemistry.

 

[targa666]

What was the ambient temp?

Much information missing.

Yesterday evening; it was around 20 deg C. I was on a drive home of about 100 km. Halfway the recalculation gave this DC chargestop, about half hour left at that moment

 

[W1NGE]

Yesterday evening; it was around 20 deg C. I was on a drive home of about 100 km. Halfway the recalculation gave this DC chargestop, about half hour left at that moment

Ok so the car was actually preconditioned then unless you were driving like you stole the car in Sports Plus to get to such a temp. Wasted energy in the end (not good for range!) if you don't intend to use it.

 

[CaptainJorg]

Good note about the preconditioning using range, the range difference can actually easily be in the double digits. If you are unsure wether you are really charging I would personally not precondition it

Also because if I’m only charging 10kWh it doesn’t really matter if it takes 2 or 3 minutes.

 

[targa666]

Good note about the preconditioning using range, the range difference can actually easily be in the double digits. If you are unsure wether you are really charging I would personally not precondition it

Also because if I’m only charging 10kWh it doesn’t really matter if it takes 2 or 3 minutes.

I totally agree. Didn’t find out yet how to switch it on or off. Gonna check the book.

@w1inge: sorry. It wasnt clear. I meant she recalculated with half an hour left to drive. The stop would have been 3 km from my home.
i don’t drive like a loony. Just an occasional kick when taking over or traffic light. Other than that I’m really that old lady

 

[W1NGE]

I totally agree. Didn’t find out yet how to switch it on or off. Gonna check the book.

@w1inge: sorry. It wasnt clear. I meant she recalculated with half an hour left to drive. The stop would have been 3 km from my home.
i don’t drive like a loony. Just an occasional kick when taking over or traffic light. Other than that I’m really that old lady

Switch what on or off?

PIRM:

NAV --> Settings --> Charging Planning

Then adjust your % for minimum charge at destination or charging stops as necessary.

 

[targa666]

Switch what on or off?

PIRM:

NAV --> Settings --> Charging Planning

Then adjust your % for minimum charge at destination or charging stops as necessary.

As I understood from CaptainJorg’s post the preconditioning can be switched on and off? I didn’t find it anywhere though. So maybe I misunderstand his post

 

[W1NGE]

As I understood from CaptainJorg’s post the preconditioning can be switched on and off? I didn’t find it anywhere though. So maybe I misunderstand his post

There are two types of preconditioning.

1. Cabin / Climate preconditioning - set from the app or PCM to either warm the car's cabin to your preset temperature. This has little or no impact on preconditioning the HV battery for DC charging.
2. HV battery preconditioning - can only be set when selecting a DC EVSE as a stopover location when using NAV. There is no button or software switch for this. but is implicit in the stopover logic. Note that preconditioning doesn't necessarily imply preheating but can be a combination of heating and / or cooling depending on the battery temp, State of Charge and ambient temperature. Porsche Charging Planner (Porsche Intelligent Range Manager (PIRM) and part of your Porsche Connect Subscription) must also be enabled. PIRM will make descisions on your overall route and battery level and in dire situations will disable rear A/C, dim headlights, limit speed, switch AC to ECO / ECO Plus amongst other things to conserve energy until you make it to the EVSE to charge. Some of this feature set can also be set in Range Drive Mode Configuration (AC settings and Max Speed).

 

[SergeyIndy]

^ Everything above is correct, but let's get back to your use case, what are you trying to accomplish or what are you seeing is not working as expected, then we can let you know how to adjust settings for optimal charging conditions and what to look for such as battery temp when it is preconditioning (heated to accept max DC charging speed).

 

[targa666]

^ Everything above is correct, but let's get back to your use case, what are you trying to accomplish or what are you seeing is not working as expected, then we can let you know how to adjust settings for optimal charging conditions and what to look for such as battery temp when it is preconditioning (heated to accept max DC charging speed).

W1nge thanks for the clear explanation.

I was using PIRM / navi on a daytrip. Expected to make it home without charge, and I did (at 14% battery) However, since PIRM was active it decided one short charge was needed to get home with 15% battery left (this is my setting).

So. The batterytemp did not precondition to the optimal 32’C, it was at 43’C.

I did not click the charging station in the screen, because I assume this is not needed
now reading W1nges post maybe it is not preconditioned because I did not click and select the advised DC station!

 

[SergeyIndy]

W1nge thanks for the clear explanation.

I was using PIRM / navi on a daytrip. Expected to make it home without charge, and I did (at 14% battery) However, since PIRM was active it decided one short charge was needed to get home with 15% battery left (this is my setting).

So. The batterytemp did not precondition to the optimal 32’C, it was at 43’C.

I did not click the charging station in the screen, because I assume this is not needed
now reading W1nges post maybe it is not preconditioned because I did not click and select the advised DC station!

32C is not the target battery temp for charging when navigating to a DC charger. The car heats the battery much higher to 43C as you noted or even a little more, not sure why and wasting a lot of energy by doing so. Corporate own documentation states the top temp for most optimal DC charging for HV battery is 35C for a J1.1.

 

[targa666]

32C is not the target battery temp for charging when navigating to a DC charger. The car heats the battery much higher to 43C as you noted or even a little more, not sure why and wasting a lot of energy by doing so. Corporate own documentation states the top temp for most optimal DC charging for HV battery is 35C for a J1.1.

Owwww. So it did perfectly!!! Lol.
Somewhere in this forum I read the 32’C, so here is the confusion

thank you again for patiently answering all my rooky questions!

 

[W1NGE]

W1nge thanks for the clear explanation.

I was using PIRM / navi on a daytrip. Expected to make it home without charge, and I did (at 14% battery) However, since PIRM was active it decided one short charge was needed to get home with 15% battery left (this is my setting).

So. The batterytemp did not precondition to the optimal 32’C, it was at 43’C.

I did not click the charging station in the screen, because I assume this is not needed
now reading W1nges post maybe it is not preconditioned because I did not click and select the advised DC station!

You must have the the EVSE selected as your stopover location OR in this case selected by Porsche Charging Planner. Two scenarios are possible.

The fact that your battery was reporting 43C then it was preconditioned - 32C is what I would normally see (sometimes higher) but as you've heard from others they have also experienced higher numbers.

In summary, you don't have an issue, your battery preconditioned on the expectation of charging from a low state of charge at the recommended EVSE based on your minimum charge at destination setting (15%), you opted to ignore, got home, the end!

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