Confirming what I know to be true - charging a Taycan

[porsche_coyote]

154 kW @ 150 kW station - started at 143 - got to 154 kw - tapered to 103 kw @ 92% - it was awesome - way way way better Taper curve than any Tesla I've seen or owned (better than my son's Model Y @ v3 supercharger)

dont' get me wrong - Tesla is still plenty fast and I still give their network the edge in terms of "will it work" when I show up to charge

but there is hope for those of us in EA hell…

I've been consistently seeing peak speeds of 175 kW on the 150 kW ABB Electrify America chargers nearest to my house (at Crystal Springs and also the Hillsdale BofA). SoC of the Taycan needs to be below 25% and battery temp has to be in the zone, but I was very pleasantly surprised. And as you note, I see it hold ~100kW all the way up to 85% or so.

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[Mr Hockey]

How I envy you all if you’re having good experiences with EA.

My 2021 is having a miserable time with EA Initially, I was able to get super high charge rates although quite a few stations were problematic and often did not work at all. Lots of finer pointing between Porsche and EA and lots of promises to improve by EA. For the past 5-6 months, I’m unable to achieve more than about 70kw rates and often less than that.

pretty much every visit to EA, several stations don’t work, takes 20 minutes on the phone with EA to reboot or figure out the station is inoperable. I’ve stopped taking the car on any trip over 100 miles for fear of being stranded again like we were last summer.

we’re taking the car in for a service soon and we’ll see what they can determine re charging rate issues.

btw - my car only shows charging rates in miles per minute. How are you all getting the display to show kw’s ?

 

[porsche_coyote]

How I envy you all if you’re having good experiences with EA.

My 2021 is having a miserable time with EA Initially, I was able to get super high charge rates although quite a few stations were problematic and often did not work at all. Lots of finer pointing between Porsche and EA and lots of promises to improve by EA. For the past 5-6 months, I’m unable to achieve more than about 70kw rates and often less than that.

pretty much every visit to EA, several stations don’t work, takes 20 minutes on the phone with EA to reboot or figure out the station is inoperable. I’ve stopped taking the car on any trip over 100 miles for fear of being stranded again like we were last summer.

we’re taking the car in for a service soon and we’ll see what they can determine re charging rate issues.

btw - my car only shows charging rates in miles per minute. How are you all getting the display to show kw’s ?

A question, and an answer:
- Is your battery pre-conditioned and at a temperature that enables high-speed charging? Rolling up to a charger with your battery temp at 50 or 60 degrees is going to yield really low charge rates.

- You can change the display to kW simply by tapping on the line that displays miles/minute

 

[kort]

How I envy you all if you’re having good experiences with EA.

My 2021 is having a miserable time with EA Initially, I was able to get super high charge rates although quite a few stations were problematic and often did not work at all. Lots of finer pointing between Porsche and EA and lots of promises to improve by EA. For the past 5-6 months, I’m unable to achieve more than about 70kw rates and often less than that.

pretty much every visit to EA, several stations don’t work, takes 20 minutes on the phone with EA to reboot or figure out the station is inoperable. I’ve stopped taking the car on any trip over 100 miles for fear of being stranded again like we were last summer.

we’re taking the car in for a service soon and we’ll see what they can determine re charging rate issues.

btw - my car only shows charging rates in miles per minute. How are you all getting the display to show kw’s ?

do you have the 19.2 kw onboard charger? if yes there is a patch that might resolve some of your charging issues. I am sorry but I do not have the service number for the fix but it is in a few older threads on here.

 

[Mr Hockey]

A question, and an answer:
- Is your battery pre-conditioned and at a temperature that enables high-speed charging? Rolling up to a charger with your battery temp at 50 or 60 degrees is going to yield really low charge rates.

- You can change the display to kW simply by tapping on the line that displays miles/minute

thanks - typically, the car is conditioned. I've had these issues regardless of outdoor temperature or how long I've driven it before a charging session. I've understood the variables that go into rate of charge and try to not let those be a factor.

Thanks also for the tip on displaying kw rates - to date I've had to go out to the charging station screen and view charge rate....

 

[Mr Hockey]

do you have the 19.2 kw onboard charger? if yes there is a patch that might resolve some of your charging issues. I am sorry but I do not have the service number for the fix but it is in a few older threads on here.

We do not have the 19.2kw option unfortunately. We do have the 150kw 400v DC option and the 93kwh battery. There are apparently three service recalls for this car which we'll have done shortly. No idea if any address whatever issues we are having.

thanks

 

[XLR82XS]

Added bonus? No supercharger lines.

Yet.... By the end of this decade I hope EA's expansion plan is realized. So many EV coming to market. Maybe some gas stations/truck stops will be retrofitted with stations.

 

[Mr Hockey]

We do not have the 19.2kw option unfortunately. We do have the 150kw 400v DC option and the 93kwh battery. There are apparently three service recalls for this car which we'll have done shortly. No idea if any address whatever issues we are having.

thanks

All

an interesting update on my charging issues these past 5-6 months. We continued to experience super slow charge rates at EA. I was about to take the car to the dealer for recalls and some other issues when suddenly the A/C died.

The dealer mentioned two things. First, there is a setting whichis regulates the percentage charge up to which the car will charge at higher speeds. That helped a bit but not much. Previously, the max I could get was 50-75kw. Now I could get 100kw. Still quite low compared to 150 / 350 kw stations.

the unexpected second revelation is that the faulty A/C sensors, which are the subject of the recall, not only killed the A/C but the dealer claims also significantly reduces charging speed. It’s still at the dealer but they claimed it charged today at 260kw for about 8 minutes which sounds about right. Says the faulty A/C sensors do not allow the battery to condition properly and impacts charge rate.

has anyone run into this ? I’d never have associated the two conditions and hoping the dealer is correct that this will resolve some/all of the charging issues we’ve experienced with this car.

 

[daveo4EV]

All

an interesting update on my charging issues these past 5-6 months. We continued to experience super slow charge rates at EA. I was about to take the car to the dealer for recalls and some other issues when suddenly the A/C died.

The dealer mentioned two things. First, there is a setting whichis regulates the percentage charge up to which the car will charge at higher speeds. That helped a bit but not much. Previously, the max I could get was 50-75kw. Now I could get 100kw. Still quite low compared to 150 / 350 kw stations.

the unexpected second revelation is that the faulty A/C sensors, which are the subject of the recall, not only killed the A/C but the dealer claims also significantly reduces charging speed. It’s still at the dealer but they claimed it charged today at 260kw for about 8 minutes which sounds about right. Says the faulty A/C sensors do not allow the battery to condition properly and impacts charge rate.

has anyone run into this ? I’d never have associated the two conditions and hoping the dealer is correct that this will resolve some/all of the charging issues we’ve experienced with this car.

this is plausible - aggresive temperature regulation is required to reach maximum charge rates - faulty thermal systems could "trick" the Taycan into thinking fast charging needs to be kept to slower rates to maintain optimial battery thermals - I could see faulty thermal sensors keeping the battery from reaching optimal temperatures, and then when charging prevent the vehicle from regulating the battery temp during the charging session

it may be dealer BS, but it's the most plausible dealer BS I've ever heard - so i'd spot them the trust and see if once fixed your charge rates achieve better results

temperature and it's regulation is a big big big part of fast charging - any faults in those system and yeah the car could/should/would keep charging rates to a minimum because the battery and it's longevity is the priority for the charging software to manage - and bad temperatures will whack a LiON battery faster than a Taycan can do 0-60 - no temperature regulation and the BMS (battery management software) ain't going to allow high rates of charge

I spot this a 9 out of 10 on plausible scale - I'll look forward to future reports as to if you experience better results.

 

[daveo4EV]

All

an interesting update on my charging issues these past 5-6 months. We continued to experience super slow charge rates at EA. I was about to take the car to the dealer for recalls and some other issues when suddenly the A/C died.

The dealer mentioned two things. First, there is a setting whichis regulates the percentage charge up to which the car will charge at higher speeds. That helped a bit but not much. Previously, the max I could get was 50-75kw. Now I could get 100kw. Still quite low compared to 150 / 350 kw stations.

the unexpected second revelation is that the faulty A/C sensors, which are the subject of the recall, not only killed the A/C but the dealer claims also significantly reduces charging speed. It’s still at the dealer but they claimed it charged today at 260kw for about 8 minutes which sounds about right. Says the faulty A/C sensors do not allow the battery to condition properly and impacts charge rate.

has anyone run into this ? I’d never have associated the two conditions and hoping the dealer is correct that this will resolve some/all of the charging issues we’ve experienced with this car.

and this post is spot on with the theme of this thread...

When the the entire system works: BMS, Battery, Thermals, and FastDC systems - the Taycan is the fastest production EV on the market today and it's a glorious thing - truly honestly fantastic - way better than my Tesla's - but at the moment this system is in it's infantcey and there are many points of failure that can cause it not to achieve it's potential - also the information provided to the owner of the vehicle during the charging session is insufficient to assign blame as to what part of this integrated system is failing and therefore limiting charge rate...

it's getting better day by day, week by week, and the general community (dealers, owners, FAstDC operators, manufacturers) are all learning what to look for and what to diagnose when problems are encounters.

the knowledge from this ONE post is a water shed event in Taycan fast charging - because of it's direct causal relationship between thermal management faults and slow fast charging sessions - it's honeslty a great piece of data and will help others in the future.

 

[Pozuelo]

What and where is this mysterious setting that regulates charging speed ? Is it the one that limits charging to 200kw or is set at the dealer only ? Thanks.

 

[Mr Hockey]

What and where is this mysterious setting that regulates charging speed ? Is it the one that limits charging to 200kw or is set at the dealer only ? Thanks.

Couldn’t get a video to upload here. It’s in the charging menu and you need to adjust the general profile.

- charging menu
- profiles / adjust general profile
- adjust minimum charge (drag) to max of 80%
- enable general charging profile

the video the dealer sent me showed what must be a demo car charging at a very low speed station. At 49% of capacity, the car was only adding 1/10th mile per minute. After making the adjustment from 25% to 80%, the charging rate doubled to a whopping 2/10th mile per minute. But at least that demonstrated an immediate impact.

As mentioned, before correcting the A/C sensors on my car, it bumped my charging rate at EA from the 50-75kw rate to 100kw while I was at just under 50% capacity.

I was getting out the door for an overseas trip so I just did what the dealer suggested without researching what this option truly controls with all the interdependencies of charging so can’t speak intelligently. Hopefully, others can explain it properly.

I’ll be really curious to see what our experience is next week when charging on our own.

 

[Pozuelo]

This setting only applies to AC charging. When charging at a DC station, it is implied that it is 100%, so no settings there. You must stop it yourself if you want less than 100%.

 

[Mr Hockey]

This setting only applies to AC charging. When charging at a DC station, it is implied that it is 100%, so no settings there. You must stop it yourself if you want less than 100%.

That makes sense given the charge rate on the dealer video. It’s surprising the dealer shared that solution knowing my issues were with the DC charging at EA. Guess the improvement I saw going to 100kw rates was due to other factors.

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