Profiles DO limit SoC (it seems)

[eddieterry]

Are you leaving optimised charging on ?

Sponsored

 

[Perry]

There are a few gotchas with profiles that might cause it to charge to 100%:

1. Except for the general profile, each profile is tied to a location and will override the general profile if the car is parked in that location.

2. If multiple profiles are configured in the same location, the first one in the list will apply.

3. Profiles can individually be disabled or enabled in settings or in the app.

4. If the active profile uses preferred charging time rather than optimised charging, it will charge throughout the entire period even if it surpasses the set charge limit.

5. Direct charging is not limited to a single charging session and will stay on until you manually toggle it.

 

[whitex]

Did you leave it plugged in for a while? It should start charging again and will end up at 100% I think I read on here it starts charging again 30 minutes after it hits the minimum defined in the profile.

I have only one general profile set to 85% min charge. I leave the car plugged in for days sometimes. It never charges above 85% that way. Occasionally when I need to, I just hit “Direct Charging” and then it goes to 100%. Have been using it this way since new. A handful of times I set a preheat timer. The car was warm and battery still at 85%. It seems the timer preheat uses shore power.

 

[SergeyIndy]

Same here.
I have a profile set to 85%. And without doing anything else, my Taycan always charges to 85%.
Whenever I need 100% I just switch the slider over to direct charging.

This is not expected behavior. The manual states that it will get to the Profile setting as soon as possible, then if there are no Timers, it will go to 100% per my understanding, but I have not tried it and do not want to take a chance on it going to 100% unless I am watching it. Also, to @whitex point, Timer has a Pre Heat feature that Profile does not. I am not seeing any point for the use of Profiles, unless you need to reach emergency minimum state as soon as possible, then hope it will not go to 100%, which is what Direct Charging does anyway.

 

[Jonathan S.]

When I was about to take delivery of my used 4CT, I read all the relevant posts here and the relevant sections of the user manual.
I came away utterly confused.
I set the general profile to 85% and that’s what I charge to at home, with occasional direct charge to 100% when I need more.
So the outcome has ended up being simple, at least for me, even if all the possible features and their interactions are anything but simple!
(What an amazing car though for the driving experience! Yesterday, I took a three hour roundtrip in my 4CT, then drive two hours in my A6ar. Still love my A6ar for what it is, but there’s just something about the 4CT that is so … well, okay, it’s a Porsche. Despite being the slowest station wagon version of an EV Porsche, it’s still a Porsche, so that must explain it!)

 

[Jhenson29]

The manual states that it will get to the Profile setting as soon as possible, then if there are no Timers, it will go to 100% per my understanding,

You forgot to highlight the rest of the sentence. The “based on…” part.

If on preferred times, then yes it will continue charging during those times.

If on optimized, it’s waiting for instructions from a HEM. If you don’t have a HEM (not available in the US), then it received no further instructions (at least, not from the profile).

So a profile on optimized with no HEM charges to the minimum immediately, stops, and then does nothing else. It does not continue charging beyond the minimum.

 

[Jhenson29]

I think I read on here it starts charging again 30 minutes after it hits the minimum defined in the profile.

This is only if you use a non-repeating timer without a profile. 30 min after, the timer is expired and it will act the same as if there are no timers or profiles (because there aren’t). If it’s a repeating timer or if you also have a profile, then the 30 min timeout isn’t applicable.

 

[SergeyIndy]

You forgot to highlight the rest of the sentence. The “based on…” part.

If on preferred times, then yes it will continue charging during those times.

If on optimized, it’s waiting for instructions from a HEM. If you don’t have a HEM (not available in the US), then it received no further instructions (at least, not from the profile).

So a profile on optimized with no HEM charges to the minimum immediately, stops, and then does nothing else. It does not continue charging beyond the minimum.

This explains above behaviour for others that it stops at the Profile minimum. Good to know that this is how it works.

I still prefer a Timer due to the fact that it does not try to charge as fast as possible the way it does under a Profile. Timer function spreads out the charging over time if it has more than it needs.

 

[W1NGE]

This is very odd. My experience of 2 Taycans in 2 years is that setting a profile without a timer causes the car to charge up to the profile level then stop. It will ONLY charge beyond the set profile level if a timer is used as well.

We must be talking about different things here as we both seem to have had contrary experiences.

It is odd and I've previously tried from scratch with just a profile for an 85% charge. Many of our US forum owners appear to only use a profile also.

In all retries the charging session simply continues to charge until the supply is disconnected.

As it happens I've no issues with the combo and so if it ain't broke ..

 

[W1NGE]

When I was about to take delivery of my used 4CT, I read all the relevant posts here and the relevant sections of the user manual.
I came away utterly confused.
I set the general profile to 85% and that’s what I charge to at home, with occasional direct charge to 100% when I need more.
So the outcome has ended up being simple, at least for me, even if all the possible features and their interactions are anything but simple!
(What an amazing car though for the driving experience! Yesterday, I took a three hour roundtrip in my 4CT, then drive two hours in my A6ar. Still love my A6ar for what it is, but there’s just something about the 4CT that is so … well, okay, it’s a Porsche. Despite being the slowest station wagon version of an EV Porsche, it’s still a Porsche, so that must explain it!)

Yes but if you don't want a charging session to start immediately which it must do in your case then you have to use a much lower minimum and a timer.

Individual use cases are different but if you want to control around off peak periods then there is no alternative to timer plus profile - even the OVO Charge Anytime app uses both to control a charging session.

 

[Jonathan S.]

Agreed. But our utility does not have any differential pricing yet for time of day.

 

[whitex]

This is not expected behavior. The manual states that it will get to the Profile setting as soon as possible, then if there are no Timers, it will go to 100% per my understanding, but I have not tried it and do not want to take a chance on it going to 100% unless I am watching it. Also, to @whitex point, Timer has a Pre Heat feature that Profile does not. I am not seeing any point for the use of Profiles, unless you need to reach emergency minimum state as soon as possible, then hope it will not go to 100%, which is what Direct Charging does anyway.

As I read the above, it will charge to minimum charge state of the profile, and only charge beyond that if there is Preferred Charging Times or Optimized Charging (via the Porsche Energy Manager I presume) set. I have neither, hence the charging stops at minimum charge state in the profile.

 

[whitex]

Individual use cases are different but if you want to control around off peak periods then there is no alternative to timer plus profile - even the OVO Charge Anytime app uses both to control a charging session.

The other option might be to get an EVSE which controls charging based on on/off-peak hours. Porsche is no a Tesla, they have about a decade to catch up to easy to use user interface, as they insist on learning everything on their own, rather than just learn what works from others.

 

[W1NGE]

The other option might be to get an EVSE which controls charging based on on/off-peak hours. Porsche is no a Tesla, they have about a decade to catch up to easy to use user interface, as they insist on learning everything on their own, rather than just learn what works from others.

It is even simpler than that and is device agnostic.

Energy provider OVO (UK) provides their own app and natively supports the Taycan. Their app controls the charging session based on min charge and target charge by when.

OVO then determine when off peak periods are and will dynamically update the profile / timer in use (called encode).

I use this approach and provider whereas previously I would have a timer and profile with a preferred charging window and end time within the guessed at off peak periods (worked well too but not as dynamic).

Seamless.

 

[whitex]

It is even simpler than that and is device agnostic.

Energy provider OVO (UK) provides their own app and natively supports the Taycan. Their app controls the charging session based on min charge and target charge by when.

OVO then determine when off peak periods are and will dynamically update the profile / timer in use (called encode).

I use this approach and provider whereas previously I would have a timer and profile with a preferred charging window and end time within the guessed at off peak periods (worked well too but not as dynamic).

Seamless.

Real time coordination with the utility is the future. It can be further enhanced by allow utilities to draw from the car, but that of course requires more things to be worked out, as cycling the battery does add wear to it, so the owner should be compensated, and of course have the option to decline.

At some point in the future I see cars having option to charge as a combination of:

1. Up to set target immediately, at whatever the current rate is
2. Up to set target by some time in the future (e.g. overnight by morning) at the utility discretion, at a discount since it allows the utility to use the car as a controllable load
3. Up to set target only when dynamic rates fall below certain price

So you could instantly charge to 30%, then ask for minimum 50% by morning, but charge to 80% is there is cheap energy available. This would have a huge benefit to utilities as EV's would become a dynamic load which is very useful to balance grid power (e.g. sudden surge in power draw can be compensated by instantly throttling charging EV's until surge has subsided or new generation capacity comes online).

Then on the flip side, there will be options to allow owners to draw on the energy in their EV batteries down to some limit SoC at some price (perhaps down to 50% at 2x the charge price, but down to 10% at 10x price). There may be other options, such as draw from the car for the household who owns the EV when energy from grid is expensive (again, down to some SoC), or use the car as backup power in an outage, etc. I can see people buying old EV's and keeping them plugged in 24/7 in order to make money on allowing utilities to use their batteries for grid load-balancing (kind of like crypo miners, people buying rigs to mine, except in this case they make money to save everyone energy costs).

But, that's a future potential of EV's. Whether or not it will ever be fully realized, only time will tell. The closest implementation so far was the Tesla network of power walls experiments in California, which allowed the utilities to charge and discharge (up to user settable limits) of the Tesla Power Walls (not Tesla cars).

Sponsored