Taycan J1.2 Home charging kw change after update

[smgraver1]

I use a tesla universal wall connector at home that’s connected to a 60amp circuit at 240v. When I would connect my Tesla I’d get 48amps into the car at around 11-11.5kw. The taycan J1.2 when I first got it would pull around 10.1kw so I assumed it just had a 40amp onboard charger or just showing what’s going into the battery which is fine. After getting the new 3B.24 Vehicle PICIS software with CarPlay in hud. I now only get 9.3kw on the same charger. Did they limit the on board charger with the new update? The wall connector is only quoting 9.4kw out of it so it’s not like it’s additional load not going into battery. Thought this was interesting. Tesla app image shown below with power output from charger.

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[BjörnfromHamburg]

At home my wife's Tesla gets 11 kW, Taycan also 10.1- 10.4 (J1.1 22 kW)
Taycan chooses max. rate itself by scanning the possibilities automatically.
It does that quite good, as in our vacation home it only pulls around 2.3 kW (no charging upgrade in the fuse box)
Tesla can be set via app, as you want and you need to make adjustments by trying out. Gave me some hot wires in the beginning.
It could be, that the protocol on the Taycan has been adjusted to more conservative numbers in charging.
I wouldn't mind too much as for over-night charging it should not matter.

 

[gtm]

I have a Tesla V3 EVSE (NACS connector and I use the Tesla Tap adapter). Consistently get 10.4 to 10.6 kW at the car. 60 amp breaker. The Tesla app usually shows 11.4 kW being output (8%+/- EVSE to car loss is typical). The only time I have ever seen a lower charge rate was when the Tesla EVSE somehow reset itself to 40 amps, and 40 amps would be consistent with what your app screenshot showed. Check in the Tesla app under settings and My Home Info to see what the EVSE is configured for.

 

[trycan]

Search around on the forum for related threads, I seem to remember others reporting similar results on the J1.2, and I think also it's a similar limitation on the Macan EV?

I only have a 50A circuit for charging (9.6kW max/40A), and my EVSE does not have an app. I just plug-in and the car tells me when it's done charging.

If you think about it, the difference between ~9.3kW and ~11kW is not that much when you are charging overnight. You'll always be able to get to the same charge % by morning.

 

[ntacus]

I’ve been only getting 40Amp using the universal wall connector as well since I got it just 2 months ago (brand new MY2025). I’ve tested it on another owner’s Porsche wall charger where his 21 Taycan gets 11kW while mine only gets 9.5kW. I’ve taken it to two service centers but unfortunately they can’t diagnose the issue because their L2 chargers are only capable of 40amp. Porsche North America says we should be getting 11kW. I just tested this on Friday with the Porsche wall charger so will see what Porsche says now. Before they were blaming the Tesla charger even though it charges my Tesla at 11kW just fine.

 

[smgraver1]

I have a Tesla V3 EVSE (NACS connector and I use the Tesla Tap adapter). Consistently get 10.4 to 10.6 kW at the car. 60 amp breaker. The Tesla app usually shows 11.4 kW being output (8%+/- EVSE to car loss is typical). The only time I have ever seen a lower charge rate was when the Tesla EVSE somehow reset itself to 40 amps, and 40 amps would be consistent with what your app screenshot showed. Check in the Tesla app under settings and My Home Info to see what the EVSE is configured for.

It's configured to 48amp. It charges at 11kw on my teslas.

 

[smgraver1]

I’ve been only getting 40Amp using the universal wall connector as well since I got it just 2 months ago (brand new MY2025). I’ve tested it on another owner’s Porsche wall charger where his 21 Taycan gets 11kW while mine only gets 9.5kW. I’ve taken it to two service centers but unfortunately they can’t diagnose the issue because their L2 chargers are only capable of 40amp. Porsche North America says we should be getting 11kW. I just tested this on Friday with the Porsche wall charger so will see what Porsche says now. Before they were blaming the Tesla charger even though it charges my Tesla at 11kW just fine.

I just think it's interesting because before this update i was getting over 10kw so wanted to post. Who knows.

 

[smgraver1]

Search around on the forum for related threads, I seem to remember others reporting similar results on the J1.2, and I think also it's a similar limitation on the Macan EV?

I only have a 50A circuit for charging (9.6kW max/40A), and my EVSE does not have an app. I just plug-in and the car tells me when it's done charging.

If you think about it, the difference between ~9.3kW and ~11kW is not that much when you are charging overnight. You'll always be able to get to the same charge % by morning.

I agree I just thought it was interesting that after an update it got slower. Also surprised it's less than 48amp as with performance battery plus a 105kwh is larger for just a 40amp onboard charger. I used to have a 72amp in my old Model S 100D.

 

[gtm]

It's configured to 48amp. It charges at 11kw on my teslas.
[/QUOTE]
Didn't realize that you were currently charging a Tesla or two at 11 kW. Clearly not a wall connector setting. Makes me wonder if Porsche is aware of a problem with the onboard charger and deliberately limiting it. The UK/EU 20 kW charger was not exactly reliable initially. Another substandard design?

 

[ntacus]

I just think it's interesting because before this update i was getting over 10kw so wanted to post. Who knows.

I really hope they didn't limit it via software when they clearly state in the car specs that it comes with an 11kW AC charger. But at the same time they recently confirmed the Macan EV only has a 9.5kW AC charger and they aren't outfitting their own service centers with higher capacity AC charging. So it seems like they don't really want to support 11kW.

For me I wouldn't have paid to install a hardwired charger to a 60A breaker if it didn't support that rate. I already had a NEMA outlet and the mobile charger that comes with the car is only capable of 40A anyway. And I still get marketing emails from Porsche to add a Porsche wall charger with the subject "Porsche Fast Charging Comes Home". Oh the irony.

 

[Voltaire]

I believe the big update for J1.2s did reduce the maximum A/C charging speed. My home charger is on a 60A breaker. I had my car in for the update around Dec. 17th, and the last 11KW charge I got at home was...Dec. 15th. I've been hoping in vain that it might be temperature related, but no, even as battery temps have come up, the fastest A/C charge rate I'm seeing now is 9KW.

I have a Chargepoint Flex, and its settings haven't changed. It's set to deliver up to 48A.

 

[smgraver1]

I believe the big update for J1.2s did reduce the maximum A/C charging speed. My home charger is on a 60A breaker. I had my car in for the update around Dec. 17th, and the last 11KW charge I got at home was...Dec. 15th. I've been hoping in vain that it might be temperature related, but no, even as battery temps have come up, the fastest A/C charge rate I'm seeing now is 9KW.

I have a Chargepoint Flex, and its settings haven't changed. It's set to deliver up to 48A.

Exact same set up for me as well. Very interesting.

 

[smgraver1]

Just to provide some interesting findings. I have my Universal Wall Connector attached to Home Assistant and It tracks lifetime kwh, Voltage, Amperage, etc. I took my vehicle in for service on the 24th of January and got it back 25th. You can see my charge session the night before the appointment I was pulling close to 46 amps out of a 240v charger so getting around 11kw. Then after the update the car is sitting around 40 amps. It seems it's true that they have lowered the onboard charger amperage intake after the update which is interesting. I had no other service done besides for the WRV3 update to 3B.24 infotainment firmware.

 

[RainGuy]

Trying to figure out how long a home charge from 10% to 80% will take and saw this thread. I currently have a Tesla Model S and a Tesla Model 3 and can charge my P85+ S in about 3 hours. How long would a new Taycan take to charge from 10% to 80%?

 

[smgraver1]

Performance battery it would take about 6 and a half hours. Performance battery plus would take about 7 hours 20 min.

Trying to figure out how long a home charge from 10% to 80% will take and saw this thread. I currently have a Tesla Model S and a Tesla Model 3 and can charge my P85+ S in about 3 hours. How long would a new Taycan take to charge from 10% to 80%?

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