Level 2 charging rate with a 50 amp capacity

[daveo4EV]

Right? I think most people know that. What I mean is that most commercial EVSE provide 208v because they are two taps off the 3-phase Wye. And 208v vs 240v is not relevant to the car/EVSE negotiation.

Agreed. I have to use an external monitor or information to see what the car and EVSE negotiated.



I will now have extra time to overthink it, as it represents a significant reduction in charging speed from my most-used chargers.

Was the old OBC's max really 48A? It seemed like the car took 45A, but I never checked the current on these faster L2 chargers (where 48A was offered).

yes 48 amps was the previous limit allowed by the OBC on North American taycan's - EVSE's that could report the actual limit would report 47.8 amps for charging sessions with my 2020 Taycan Turbo…

Porsches _IS_ neutering the North American OBC's to 40 amps

240v * 40 amps is 9.6 kW "raw"
208v * 40 amps is 8.32 kW "raw"

so yeah it's a 20% reduction in charging speeds at 48 amp EVSE's regardless of voltage input/output…

but Porsche has also NEVER promised 48 amp support for North American Taycan's

see this thread for both the proof of 48 amp support in the field, and the confusion that Porsche specified the Taycan was a 40 amp (9.6 kW) vehicle…the thread below has posting starting in 2020 so offer an historical record with proof of what was previously supported and now is changing with no disclosure from Porsche.

https://www.taycanforum.com/forum/threads/march-2026-update-porsches-only-ota-update-hobbles-north-american-taycans-to-max-9-6-kw-charge-rate….1793/

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[MaxPlastix]

My car came with an 11kW OBC, so to get that rate at even a generous 240v, they would need to allow 46A.

It is right in the spec under Standard Equipment:
E-Mobility

• Mobile Charger Plus
• 11 kW On-Board Charger
• Supply Cable for NEMA 14-50 Electrical Socket
• Mobile Charger Cable

Marketing sure gets excited when they improve charging speed a little, but then this OTA pushes out without a description like "New! 17% Reduction in max L2 charging current!"

That doesn't seem right at all.

 

[RED!]

My car came with an 11kW OBC, so to get that rate at even a generous 240v, they would need to allow 46A.

It is right in the spec under Standard Equipment:
E-Mobility

• Mobile Charger Plus
• 11 kW On-Board Charger
• Supply Cable for NEMA 14-50 Electrical Socket
• Mobile Charger Cable

Marketing sure gets excited when they improve charging speed a little, but then this OTA pushes out without a description like "New! 17% Reduction in max L2 charging current!"

That doesn't seem right at all.

Fully agree here!
I installed TWO 48A charger on 60A circuits (240V, single phase)
The day before the update I charged happily at 10.5, the day after 8.5!
I could have saved a fair bit of dough installing cheaper chargers and cheaper wiring...

Also, my build sheet is specifically listing an 11 Kw charger on it. So no ambiguity IMO.
Question îs: Do we have a class action, should we, or should we be happy that Porsche is protecting our batteries by optimizing their charge rate??? Or are they just making up for shitty components and avoiding a recall?

 

[MaxPlastix]

This feels actionable. It's not an insignificant change to daily use. Charge rate is a meaningful part of the ownership experience, and often promoted as a product advantage.

How far down could they take this before people (and lawyers) feel differently? 30A? 20A?

 

[daveo4EV]

Fully agree here!
I installed TWO 48A charger on 60A circuits (240V, single phase)
The day before the update I charged happily at 10.5, the day after 8.5!
I could have saved a fair bit of dough installing cheaper chargers and cheaper wiring...

Also, my build sheet is specifically listing an 11 Kw charger on it. So no ambiguity IMO.
Question îs: Do we have a class action, should we, or should we be happy that Porsche is protecting our batteries by optimizing their charge rate??? Or are they just making up for shitty components and avoiding a recall?

if you have documentation showing a North American Taycan w/11 kW OBC then you have a strong case to question why Porsche is doing this.

my guess is their OBC is shitty and they don't like the implictions of running single phase 240V @ 48 amp through their component - but that is pure speculation on my part…

in other countries with 3 phase power 11 kW charging is only 16 amps of current - quite a reduction in power flow through the OBC…

my personal unverified speculation is that Porsche "knows" their OBC is crap and they are guarding against component failure caused by high power flow through the component…

I find it hard to believe that there is a material difference in battery impact between 9.6 kW and 11 kW DC power flows to a 100 kWh hour battery that is rated to handle 270 kW DC charge rates the difference in impact to LiON cells between 9.6 kw and 11.52 kW is minuscule statistical noise to the battery longevity.

 

[RSouthern]

Wow, perfect timing for me

My OBC just failed in my '22 GTS. It has (had?) the 19.2kW uprated OBC. I was told that the only option is to downgrade to the 11kW OBC, but reading through this thread, it sounds like it's only functioning at 9.6kW. that's going to be a big step down!

I have the Tesla Universal Home charger on a 60A circuit (thanks to the fiasco with the recalled Porsche mobile charge connect and the subsequent good-will offer that covered a lot less than the cost of the Tesla Charger).

Now it sounds like I will have to make sure the plug and charge works on top of accepting everything else. I really liked the Taycan, but Porsche is pushing the limits of what's acceptable to a consumer. This is (was) a $192K car but I have had better reliability and ownership with BMW's costing half that. I guess I can see why Porsche wants to back away from the EV space.

I have a case open with Porsche for some comp for the downgraded OBC, but at what point is the car that you have no longer the car that you bought?

 

[RED!]

Wow, perfect timing for me

My OBC just failed in my '22 GTS. It has (had?) the 19.2kW uprated OBC. I was told that the only option is to downgrade to the 11kW OBC, but reading through this thread, it sounds like it's only functioning at 9.6kW. that's going to be a big step down!

I have the Tesla Universal Home charger on a 60A circuit (thanks to the fiasco with the recalled Porsche mobile charge connect and the subsequent good-will offer that covered a lot less than the cost of the Tesla Charger).

Now it sounds like I will have to make sure the plug and charge works on top of accepting everything else. I really liked the Taycan, but Porsche is pushing the limits of what's acceptable to a consumer. This is (was) a $192K car but I have had better reliability and ownership with BMW's costing half that. I guess I can see why Porsche wants to back away from the EV space.

I have a case open with Porsche for some comp for the downgraded OBC, but at what point is the car that you have no longer the car that you bought?

Can we add to that: spec’ing the matrix headlights got you nothing in terms of functionality, and switching from monthly cost for functionality to outright buy-out, and limiting upgrades to only certain features… I’ve owned (and own) quite a few Porsches and this is the only one where I’ve been frustrated with head office decision making. Generally, they’re just excellent mechanical machines that are durable and fun to drive.

 

[RSouthern]

@RED! Just as a follow up, my dealer has tried to fix a rattle in the front passenger door 2 times over the past 24 months (it's really bad in the cold/winter, so I had to wait until it got cold since the dealer says Porsche will only accept a rattle claim on a smooth surface) and they finally decided they need to order a replacement door card. They said it'll take 6 months since Porsche needs to custom build it -only 4 more months to go. A GTS with the CF trim. Not that exotic but no parts! It's insane!

There was also a rattle in the driver's side originally which was identified as a rivet. Just sitting in there rattling around. This is my first Porsche and they are not making me a loyal customer. My Lotus Elise is more reliable, my JK Jeep Wrangler rattles less, my Jeep Gladiator has more reliable electronics/infotainment and the BMWs spend more time on the road than the Taycan (The Porsche has too many recalls and week at a time repairs for each rattle, recall or service).
Sigh.
At least it's a good looking car.

 

[MaxPlastix]

Today it's offering me the third OTA update in a week.

I don't dare. No more "upgrades" without a full document on what's changing. I did not want the last one, in hindsight. I should never have accepted it, so I could still be charging 20% faster.

Tesla drivers seem to enjoy getting updates. Porsche drivers get OTA Downgrades.. that sucks.

 

[targa666]

Sorry. I’m probably asking a stupid question here; being all new to EV’s and never have charged yet…
The dealer here advised me to get a 22kW charger for my 2022 Taycan. But I see in this and other thread there are issues with it.
although I got the 22kW charging box would it be wise to set it to 11 kW? It’s not a problem for me to charge at a lower speed, rather not blow things up in my new car!

 

[RED!]

@RED! Just as a follow up, my dealer has tried to fix a rattle in the front passenger door 2 times over the past 24 months (it's really bad in the cold/winter, so I had to wait until it got cold since the dealer says Porsche will only accept a rattle claim on a smooth surface) and they finally decided they need to order a replacement door card. They said it'll take 6 months since Porsche needs to custom build it -only 4 more months to go. A GTS with the CF trim. Not that exotic but no parts! It's insane!

There was also a rattle in the driver's side originally which was identified as a rivet. Just sitting in there rattling around. This is my first Porsche and they are not making me a loyal customer. My Lotus Elise is more reliable, my JK Jeep Wrangler rattles less, my Jeep Gladiator has more reliable electronics/infotainment and the BMWs spend more time on the road than the Taycan (The Porsche has too many recalls and week at a time repairs for each rattle, recall or service).
Sigh.
At least it's a good looking car.

Wow, my 2001 GT2 with real mileage on it is tight as a new car… I assumed my Taycan would be as well built. I guess there’s two possibilities, 1) you’ve had a bad build, 2) Porsche isn’t making the same effort that they used to.

 

[RED!]

Sorry. I’m probably asking a stupid question here; being all new to EV’s and never have charged yet…
The dealer here advised me to get a 22kW charger for my 2022 Taycan. But I see in this and other thread there are issues with it.
although I got the 22kW charging box would it be wise to set it to 11 kW? It’s not a problem for me to charge at a lower speed, rather not blow things up in my new car!

For starts, refuse all OTA updates!!!
Second, I’d cut back on the charge wattage a bit at least, there’s a post here where someone looked at the 22kW board and commented that parts on it weren’t rated for 22kW. Probably worth trying to keep the OBC for when you need the speed vs risking burning it out.

 

[targa666]

Thanks. I’m gonna figure out how it all works Soon enough! Probably I can make a setting in the car somewhere to charge at 11 kW with almost 22 available (it’s a max of 19,6 becouse of my house has 3x25A)
concerning the OTA. Probably now its all updated since the car is Porsche approved, i assume it is Standard in the 111 point checklist?

 

[daveo4EV]

Thanks. I’m gonna figure out how it all works Soon enough! Probably I can make a setting in the car somewhere to charge at 11 kW with almost 22 available (it’s a max of 19,6 becouse of my house has 3x25A)
concerning the OTA. Probably now its all updated since the car is Porsche approved, i assume it is Standard in the 111 point checklist?

sadly unlike Telsa you can not "reduce" the charging rate via any in car software - the _ONLY_ way to charge at a slower speed is if you setup your EVSE to offer less power - there are _NO_ controls inside the vehicle to reduce amps/kW's while charging…

if you have a 22 kW OBC and want to charge at 11 kW - the only way tot accomplish that is via adjusting the external EVSE…

Porsche's EVSE's have a 50% on units lacking an LCD screen - if you have an LCD screen you can reduce amps via the settings on the LCD screen - however when you're away from home using someone else's EVSE you'll be stuck charging at what ever rate that EVSE offers.

 

[targa666]

sadly unlike Telsa you can not "reduce" the charging rate via any in car software - the _ONLY_ way to charge at a slower speed is if you setup your EVSE to offer less power - there are _NO_ controls inside the vehicle to reduce amps/kW's while charging…

if you have a 22 kW OBC and want to charge at 11 kW - the only way tot accomplish that is via adjusting the external EVSE…

Porsche's EVSE's have a 50% on units lacking an LCD screen - if you have an LCD screen you can reduce amps via the settings on the LCD screen - however when you're away from home using someone else's EVSE you'll be stuck charging at what ever rate that EVSE offers.

Thank you for your clear explanation! I’ll dive into the specs (Porsche wallbox). I know there is a switch, can set it to 11 and it’ll be fine. Out of home I won’t be charging a lot, on long distance holidays it’s DC charger anyway. But I will keep in mind to use an 11 in stead of 22 when it applies (and is available)

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