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

[Scandinavian]

Yep, the London shell ones are like this (see image).

The lamp posts are so close to the curb that it’s highly unlikely anyone would be getting their wheel chair stuck in the wires @W1NGE ?

I can not really see any problems with this type of lamp post charging points. The cable length from the car owner could possibly be just a little shorter but no problem else. Do not think somebody will try to cross the street behind that car either, since that is what Zebra crossings are for!

It is quite common in larger cities to install pillars with up to 22 kW charge points like in the picture below. In this case it was installed with full approvals from all city authorities and would not hinder anybody. There are plenty of these points along this street (25??).

And it is a blessing when you stay in the city and need to charge over night!

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[d00d]

Here's my understanding of the logic, or lack thereof;

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

More info here;

https://rennlist.com/forums/taycan/1349173-0q-pure-white-journal.html#post18806242

 

[eddieterry]

Perfect and concise.

 

[Jhenson29]

Here's my understanding of the logic, or lack thereof;

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

More info here;

https://rennlist.com/forums/taycan/1349173-0q-pure-white-journal.html#post18806242

Yes, but to add to #5, it will also charge outside of the preferred times if needed.

 

[W1NGE]

Why do you have a timer set to 85% if your general profile has the same set as the minimum. It seems redundant, no? DELETE the timer, you don't need it.

Also, is the General Profile enabled?

The point is we appear to need it ... again my theory that something is different on the other side of the pond. We've all tried profile only this side and it just doesn't work.

 

[W1NGE]

I can not really see any problems with this type of lamp post charging points. The cable length from the car owner could possibly be just a little shorter but no problem else. Do not think somebody will try to cross the street behind that car either, since that is what Zebra crossings are for!

It is quite common in larger cities to install pillars with up to 22 kW charge points like in the picture below. In this case it was installed with full approvals from all city authorities and would not hinder anybody. There are plenty of these points along this street (25??).

And it is a blessing when you stay in the city and need to charge over night!

The picture with the Ionic is from Shell (obviously) and the pictures I shared where unrelated but depict the idiotic things folk do.

 

[HerrCooles]

The profile says MINIMUM charge and not maximum charge.
Can't anyone read that?
Of course it just keeps charging with such a high setting. Why not?

 

[911GP]

I agree.

 

[Grim]

I always assumed that the profile merely sets a minimum charge which it will aim to reach as soon as you plug in, ignoring all other settings and that everything else has to be controlled with timers and that it will over ride the timer.

So if you have a timer set to charge from 23:30 to 05:30 and you plug in at 19:00 with a profile of 25% and a SOC of 7%, it will charge to 25% as soon as you plug in, the pause when it reaches 25%, then continue to your desired charge level between 23:30 and 05:30.

Presumably if you have all the above circumstances but no profile it:
- will charge to your desired target charge level and it will do so from a timing perspective based on your departure time only (not specified charge times)
- it will not start charging immediately unless the departure time is set sufficiently close that it has to start charging asap to reach the target charge

Timers are necessary to set target charge levels

Profiles only specify minimum charge levels and specify charging time windows.

The fact that the lowest minimum one may set on a profile being 25% is annoying as it means that in certain circumstances (if charging from below 25%) the use of a profile can prevent you from charging only in a preferred timing window (using off peak rates). Theoretically you could use a timer without a profile, with a departure time that means would mean charging would be delayed but 1) this is tricky to do with certainty 2) if you want to charge to a higher SOC (ie have a lot of charging to do) it may mean you miss the end of your cheap rate window and continue charging at higher rates into the morning (a profile would simply delay charging till next day’s charging window).

 

[Jhenson29]

The point is we appear to need it ... again my theory that something is different on the other side of the pond. We've all tried profile only this side and it just doesn't work.

What? You’ve “all tried it” and doesn’t work? ?

Here is @eddieterry saying it works:
https://www.taycanforum.com/forum/t...-but-car-went-to-100.23075/page-2#post-351687

And telling you it’s always worked:
https://www.taycanforum.com/forum/t...-but-car-went-to-100.23075/page-2#post-351687

And you responded….so you saw it. Do you have memeory issues? Do you think you should see a doctor?

 

[Jhenson29]

So if you have a timer set to charge from 23:30 to 05:30 and you plug in at 19:00 with a profile of 25% and a SOC of 7%, it will charge to 25% as soon as you plug in, the pause when it reaches 25%, then continue to your desired charge level between 23:30 and 05:30.

- it will not start charging immediately unless the departure time is set sufficiently close that it has to start charging asap to reach the target charge

It will charge to 25% immediately without the profile also.

Theoretically you could use a timer without a profile, with a departure time that means would mean charging would be delayed but 1) this is tricky to do with certainty 2) if you want to charge to a higher SOC (ie have a lot of charging to do) it may mean you miss the end of your cheap rate window and continue charging at higher rates into the morning (a profile would simply delay charging till next day’s charging window).

With a timer, you may miss your window regardless. It will charge outside of preferred profile times as needed.

 

[911GP]

I believe 25% minimum is the factory set level and you can’t have a level below this. The profile minimum allows this to be higher.

 

[glon]

Here's my understanding of the logic, or lack thereof;

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

More info here;

https://rennlist.com/forums/taycan/1349173-0q-pure-white-journal.html#post18806242

As I’ve said a few times now on this thread, Number 2 definitely doesn’t work anymore for me.

it used to, it would charge to the minimum set, send a push alert saying ‘The charging process is complete’ and not charge any further than the ‘minimum’ set. Now, possibly since the recall software update the car received last month, it just keeps charging to 100%. Hence the thread.

 

[or1]

Read through the whole thing looking for the obvious to help.

Confirmed this is in fact AC charging at 10kW or so and Direct Charge is OFF.


Solution 1: Standard procedure to just set Profile (location independent) for 85% and Optimized. Make sure the EVSE is a dumb one and no Timers. End of story. Tested by many. Car will start charging immediately to 85% and STOP.

Solution 2: However, if you start playing with Timers, and want the car charge to 85% by departure time, then the obvious miss is that it MUST be recurring or you set a ONE OFF dummy Timer way into the future if you do not have predictable daily recurring schedule, because, this is how we verified with multiple tests the logic works.

Non-Recurring Timer like I saw above for the Sunday, if it expires even though you said go to 85%, will be executed, BUT the car is looking for the NEXT instruction on what to do and if there is NO recurring Timer or ONE OFF Timer, then it will restart to charge to 100%.

As the culprit for one of those other threads, I think I can comment in this thread too. And it was SergeyIndy who made me understand enough more about how it works to get success in controlling it again. Just as he descibes in quote above. But I can add an anecdote to it.

For me, it was stopping using recurring timers that "broke it". As long as there was something recurring, i.e. a future instruction, the car did not go to 100. When I turned it off, because my driving needs were not recurring any more, it started going to 100 just the way OP describes.

The key understanding for me is that the car inherently wants to go to 100 (wants is the wrong word, but you understand). It is written clearly in the manual - but who remembers that after a couple of years? But a future instruction for any time keeps it from going. So I have added an active timer for a date next year. Then it always stops at the desired point in the "real" active timer that I modify as desired, to fit both my driving needs and charge with as cheap electricity as I can manage.

Profiles could perhaps make things simpler... or complicated. But I dont use them.

 

[glon]

As the culprit for one of those other threads, I think I can comment in this thread too. And it was SergeyIndy who made me understand enough more about how it works to get success in controlling it again. Just as he descibes in quote above. But I can add an anecdote to it.

For me, it was stopping using recurring timers that "broke it". As long as there was something recurring, i.e. a future instruction, the car did not go to 100. When I turned it off, because my driving needs were not recurring any more, it started going to 100 just the way OP describes.

The key understanding for me is that the car inherently wants to go to 100 (wants is the wrong word, but you understand). It is written clearly in the manual - but who remembers that after a couple of years? But a future instruction for any time keeps it from going. So I have added an active timer for a date next year. Then it always stops at the desired point in the "real" active timer that I modify as desired, to fit both my driving needs an charge with as cheap electricity as I can manage.

Profiles could perhaps make things simpler... or complicated. But I dont use them.

Thanks. Yes, @SergeyIndy 's explination of why recurring is important was really helpful. Good to hear that this cracked it for you. I haven't needed to charge since posting but will try this next time and report back.

Thanks again.

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