Charge to 85% - What on earth is going on!!!

[gatorfast]

As a new Taycan owner this thread is very interesting and useful. Based on my reading and research, here is my understanding of things:

Profile - the minimum charge state is just that, the minimum (not the maximum or stop point). Once you plug in the vehicle it will immediately begin to charge up the minimum point set regardless of other parameters. Once it reaches the minimum charge point, various things will happen but essentially it will continue charging up to 100% but not necessarily continuously. Instead, based on the optimized charge and preferred time settings it will decide when is best to continue charging. Nonetheless it will eventually go to 100%.

Timer - this is where you set the maximum/cap if you don’t want it to charge above a certain %. If it is less than the minimum charge in the profile, then I believe the minimum profile charge will take precedent. Otherwise, the timer governs the max charge. That said I think I found out why some report that despite the setting of the timer maximum the car still charges to 100%. Check out the excerpt from the manual. Once the timer expires, if it is not unplugged within 30 minutes it will then start charging again up to 100%! For those reporting the timer did not limit the max charge - did you unplug it within 30 minutes of the timer expiring?

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[azraeil]

What is this new software update by the way? If it causes so much problems with the charging limit, I'd like to stay away from it. My setup is fine right now (no timer and minimum charge setting at 80% stops charging without fail) so I don't want to mess it up with a software update.

 

[SergeyIndy]

As a new Taycan owner this thread is very interesting and useful. Based on my reading and research, here is my understanding of things:

Profile - the minimum charge state is just that, the minimum (not the maximum or stop point). Once you plug in the vehicle it will immediately begin to charge up the minimum point set regardless of other parameters. Once it reaches the minimum charge point, various things will happen but essentially it will continue charging up to 100% but not necessarily continuously. Instead, based on the optimized charge and preferred time settings it will decide when is best to continue charging. Nonetheless it will eventually go to 100%.

Timer - this is where you set the maximum/cap if you don’t want it to charge above a certain %. If it is less than the minimum charge in the profile, then I believe the minimum profile charge will take precedent. Otherwise, the timer governs the max charge. That said I think I found out why some report that despite the setting of the timer maximum the car still charges to 100%. Check out the excerpt from the manual. Once the timer expires, if it is not unplugged within 30 minutes it will then start charging again up to 100%! For those reporting the timer did not limit the max charge - did you unplug it within 30 minutes of the timer expiring?

This thread started because the Profile function does not work as designed. Therefore, your understanding of how a Profile and Timer work are not exactly correct. Manual is the last thing that is helpful on how these work. I assure you we know as a forum how these work by now and how to set them up if everything works as designed.


Therefore, so we do not open this can again and again, what are you trying to accomplish with your charging is a better way to start. Then we can tell you the best way to configure it instead of going in all kinds of ways Profiles and Timers can be used. However, if for some reason your car does not work as designed then we have workarounds, which is what this thread did to help the OP, which is to say this is not the thread to learn how to do it for a new owner.

 

[gatorfast]

This thread started because the Profile function does not work as designed. Therefore, your understanding of how a Profile and Timer work are not exactly correct. Manual is the last thing that is helpful on how these work. I assure you we know as a forum how these work by now and how to set them up if everything works as designed.


Therefore, so we do not open this can again and again, what are you trying to accomplish with your charging is a better way to start. Then we can tell you the best way to configure it instead of going in all kinds of ways Profiles and Timers can be used. However, if for some reason your car does not work as designed then we have workarounds, which is what this thread did to help the OP, which is to say this is not the thread to learn how to do it for a new owner.

Apologies I was just trying to be helpful. The OP stated he set a timer for 8am but then at 10am his car was at 100%. The excerpt I posted explains why that would be the case despite the timer maximum charge being reached. Also, OP stated his profile minimum was 85% but the car still charged to 100% and again the manual states why this happens. Perhaps there are quirks or mishaps that happen to some, but based solely on the OP the charging behavior described jives with the manual.

 

[eddieterry]

What is this new software update by the way? If it causes so much problems with the charging limit, I'd like to stay away from it. My setup is fine right now (no timer and minimum charge setting at 80% stops charging without fail) so I don't want to mess it up with a software update.

I have had all the updates and still have no problem just using the general profile to stop charging at 80 % or whatever I set it to so long as I tick optimised charging.
So for me nothing has changed.

 

[W1NGE]

As a new Taycan owner this thread is very interesting and useful. Based on my reading and research, here is my understanding of things:

Profile - the minimum charge state is just that, the minimum (not the maximum or stop point). Once you plug in the vehicle it will immediately begin to charge up the minimum point set regardless of other parameters. Once it reaches the minimum charge point, various things will happen but essentially it will continue charging up to 100% but not necessarily continuously. Instead, based on the optimized charge and preferred time settings it will decide when is best to continue charging. Nonetheless it will eventually go to 100%.

Timer - this is where you set the maximum/cap if you don’t want it to charge above a certain %. If it is less than the minimum charge in the profile, then I believe the minimum profile charge will take precedent. Otherwise, the timer governs the max charge. That said I think I found out why some report that despite the setting of the timer maximum the car still charges to 100%. Check out the excerpt from the manual. Once the timer expires, if it is not unplugged within 30 minutes it will then start charging again up to 100%! For those reporting the timer did not limit the max charge - did you unplug it within 30 minutes of the timer expiring?

Thanks for your summary.

I posted on another thread some years back the same guidance and drew attention to the owner's manual as you have done.

However, since then Porsche have updated the Owner's manual on the web and the notes are now changed and no reference to the 30 min rule is made. The online manuals for all model years are a bit of a buggers muddle if I'm honest with updates for MY25 included in earlier MYs.

Something has changed (for many) and I've never had an issue charging and always used the timer / profile as nothing else worked to control then end of a charging session. Leaving connected is fine as long as there is another timer event in the future - hence the recommendation for a recurring timer.

It now looks like those folk who relied solely on profile only charging are slowly being brought into line and the combination of both a timer and profile is now needed. This appears to be 'forced' with some as yet undocumented software update which is adding to the overall frustration / confusion / forced relearning.

Online manuals are here: https://manual.porsche.com/#/wpi/enter/pgroup/vhc:taycan

 

[Gino]

As a new Taycan owner this thread is very interesting and useful. Based on my reading and research, here is my understanding of things:

Profile - the minimum charge state is just that, the minimum (not the maximum or stop point). Once you plug in the vehicle it will immediately begin to charge up the minimum point set regardless of other parameters. Once it reaches the minimum charge point, various things will happen but essentially it will continue charging up to 100% but not necessarily continuously. Instead, based on the optimized charge and preferred time settings it will decide when is best to continue charging. Nonetheless it will eventually go to 100%.

Timer - this is where you set the maximum/cap if you don’t want it to charge above a certain %. If it is less than the minimum charge in the profile, then I believe the minimum profile charge will take precedent. Otherwise, the timer governs the max charge. That said I think I found out why some report that despite the setting of the timer maximum the car still charges to 100%. Check out the excerpt from the manual. Once the timer expires, if it is not unplugged within 30 minutes it will then start charging again up to 100%! For those reporting the timer did not limit the max charge - did you unplug it within 30 minutes of the timer expiring?

I’ve just tested the 120V charger for the last week. Working good. Charging does not restart after 30 minutes when the 85 set point had been reached & then continue to charge to 100% after 30 minutes.
I started at 65% when I plugged in at 8pm and have kept in plugged in for 4 days now. The preferred charging times is set to 9pm to 9am every day to 85%. It took almost a day to get to the 85% & stopped saying “Charging process completed”.
I then changed it to 100% in the profile, sent it to my vehicle & by the next morning it was at 92% still charging at 1.2kW.
I then changed it back to 85% in the profile and the charging stopped & again stated “Charging Process Completed”.
I have left it for the last two days without driving it plugged into the 120V charger and it has stayed at 92% and still displaying on the PCM in the car as well as in the app stating “charging process completed”.
In conclusion my 120V Porsche charger is working flawlessly and there is no issue will leaving it plugged in even when not charging.
This is the way to keep your battery topped off if your away for weeks or months. You can start & stop the charging process by simply raising or lowering the charging percentage stopping point.

 

[d00d]

Just in general. It will start before or continue/start after if needed. For a contrived example, if your preferred times are 2am-4am and and your timer is 7am, if it takes 4 hours to charge, it will charge from 2am-4am and then 5am-7am. Change your preferred times to 5am-7am and it will charge from 3am-7am.

They are your “preferred” times. It’s not a strict window. This is why I’ve said many times that having a timer departure time at the end of a preferred time makes the preferred times superfluous.

Thanks, realized I didn't copy all from my post at https://rennlist.com/forums/taycan/1349173-0q-pure-white-journal.html#post18806242;

1. No profile, no timer: charges to 100%
2. Profile with optimized charging, no timer: charges to the profile's minimum
3. Profile with preferred charging period, no timer: charges to the profile's minimum, then charges to 100% within the profile's preferred times
4. Profile with optimized charging and timer: charges to the profile's minimum, then charges to the timer's scheduled maximum just in time
5. Profile with preferred charging period and timer: charges to the profile's minimum, then within the profile's preferred times charges to the timer's scheduled maximum, but not always just in time

This last combination, a profile with preferred charging period and a timer, may not work as expected.
Suppose you have a timer set for 85% at 17:20 Friday, and with 65% at 08:00 Monday you enable the profile.
It charges Monday within the 11:00 to 13:00 preferred charging period up to the timer's maximum.
This seems like a bug, I would expect it to wait until it gets closer to the day the timer is set to.

Location based profiles apparently must be set from the car, otherwise the red radius won't be seen in the iPhone application and it won't be seen as active.
Last edited by d00d; May 17, 2023 at 06:53 AM.

 

[ForeverWild]

Hi - Yes, I know this topic has been discussed 1,000 times but most of the threads seem to be closed down by someone entering the discussion and saying ‘you just set a timer for 85%’ or ‘the minimum charge in profile is actually a maximum’, etc…

None of this is true.

I set a timer for 85% at 8am, wake up at 10 and the F***IN car is at 100%.

I set the profile minimum charge to 85% overnight, wake-up and the F***ING car is at 100%.

DOES ANYONE KNOW HOW YOU MAKE THE THING STOP AT 85% AND FOR IT TO ACTUALLY STOP 85%?

Turn off DC Charge

 

[ForeverWild]

Yep, not sure this helps. My problem is I want it to stop at 85%, but set a timer to 85% and it just keeps going to 100% if you leave it past the timer time.

Even more confusingly, what it actually does is say 'Charging process complete' at 85% but keeps going to 100% if you don't unplug it.

Turn off DCFC

 

[Gino]

Turn off DC Charge

Also make sure to set the 85% to repeat every day in the settings as well as turn off DC charging. When you use DC charging it bypasses any limits you’ve set.

 

[glon]

Also make sure to set the 85% to repeat every day in the settings as well as turn off DC charging. When you use DC charging it bypasses any limits you’ve set.

Problem already solved: see this conclusion post: https://www.taycanforum.com/forum/threads/charge-to-85-what-on-earth-is-going-on.23637/post-363739

 

[eddieterry]

Good to see in the latest from Porsche at https://www.porsche.com/international/charging-limitation-en/
That they finally instruct people to use optimised ticked if they want to just have a profile that stops at 80%
About time !

 

[glon]

Good to see in the latest from Porsche at https://www.porsche.com/international/charging-limitation-en/
That they finally instruct people to use optimised ticked if they want to just have a profile that stops at 80%
About time !

Ha! Hardly a sign of a well designed interface if their own instructions need to use the phrase “so-called”, is it ?

 

[Gino]

Good to see in the latest from Porsche at https://www.porsche.com/international/charging-limitation-en/
That they finally instruct people to use optimised ticked if they want to just have a profile that stops at 80%
About time !

Now I understand completely why Porsche Customer Service told me my vehicle does not apply any current campaign requesting not to charge above 80% as a safety precaution under the current recalls. I never received a letter stating my vehicle was actually confirmed to be in these groups of vehicles (ARB6 or ARB7) so this is why they were confident in telling me I could charge to 100% using my 120V charger as often as I need to even though they do say my battery capacity would likely be reduced over the long term if charged to 100% vs 80%.
It’s nice to finally see something in writing to address their reasoning to limit charging to 80% on selected vehicles but not all vehicles.

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