Onboard charger: 19.2kw vs 150 kw/400v - which do I need?

[4thPcar]

Finalizing my order and I don't get this part of it. We have a Tesla so have already the heavy duty charging set up in our garage. That said, I understand the 150kw on board charger is for public stations and much cheaper than the 19.2. So what exactly is the 19.2 kw for?

And in general regarding the charging infrastructure, what is most recommended from the configurator? Thank you!

Sponsored

 

[Jhenson29]

19.2kW is the AC charger, typically used at home in the US as there aren’t many out in the wild, and you’d probably be looking for DC fast charging for public charging anyway. Otherwise, the limit is 9.6kW by spec, although it’s been found to be 11kW in practice.

What is the “heavy duty” EVSE you have now?

If you don’t have a known use case for it, you probably don’t need it. I have the 19.2, but my use case is running around with kids stopping at home for an hour or two, and then back out running around, so I wanted to charge as quickly as possible while home for that time period.

The 150kW is only for 400V locations that are more that 50kW, which I understand to either only or mostly be Tesla-only at the moment, but could change in the future. The standard 400V DC charger is 50kW.

The Taycan can charge at (up to) its maximum speed of 270kW* the at any 800V location (e.g. all EA DC chargers) standard.

*limited by 800V location capacity as well as other conditions on the car such as SoC and temperature.

 

[4thPcar]

19.2kW is the AC charger, typically used at home in the US as there aren’t many out in the wild, and you’d probably be looking for DC fast charging for public charging anyway. Otherwise, the limit is 9.6kW by spec, although it’s been found to be 11kW in practice.

What is the “heavy duty” EVSE you have now?

If you don’t have a known use case for it, you probably don’t need it. I have the 19.2, but my use case is running around with kids stopping at home for an hour or two, and then back out running around, so I wanted to charge as quickly as possible while home for that time period.

The 150kW is only for 400V locations that are more that 50kW, which I understand to either only or mostly be Tesla-only at the moment, but could change in the future. The standard 400V DC charger is 50kW.

The Taycan can charge at (up to) its maximum speed of 270kW* the at any 800V location (e.g. all EA DC chargers) standard.

*limited by 800V location capacity as well as other conditions on the car such as SoC and temperature.

Thank you, I am embarrassed to say I understood about half of what you've written here. I have the 240V charger in my garage for our Tesla and I would plan to add a second outlet for the Taycan. My use case is simple: I hardly go anywhere anymore! So what I am surmising is maybe I don't need any of the fancy extras offered on the configurator. I was told there was an onboard charger that was able to accelerate the charging speed at a public charging station. That is something I would pay for - is that the 150kw charger? Sorry I am an EV nubie but wanting to learn.

 

[Ledakar]

I have one question. If you dont choose 19.2 kW AC charger, the charging on DC charger will be also slower?

best

 

[Jhenson29]

Thank you, I am embarrassed to say I understood about half of what you've written here. I have the 240V charger in my garage for our Tesla and I would plan to add a second outlet for the Taycan. My use case is simple: I hardly go anywhere anymore! So what I am surmising is maybe I don't need any of the fancy extras offered on the configurator. I was told there was an onboard charger that was able to accelerate the charging speed at a public charging station. That is something I would pay for - is that the 150kw charger? Sorry I am an EV nubie but wanting to learn.

Don’t apologize for asking questions. Better to know before you order.

240V isn’t sufficient information. Do you know how many amps or a kW rating? Does it plug into a receptacle or is it hardwired? You can post a pic also.

If you barely drive, then you probably don’t need any additional options.

The 150kW 400VDC charger is for public charging, but only at 400VDC locations, and it’s only helpful if the station is more than 50kW, because the Taycan can do 50kW on 400V standard.

Unless Tesla opens up its chargers to other EVs and let’s the other EVs charge at over 50kW, then the option is near useless in the US.

Someone on here will probably follow up with “It’s not that much, just add it”, but you can add tens if thousands of dollars on options that “aren’t that much”, so that argument is BS.

 

[Jhenson29]

I have one question. If you dont choose 19.2 kW AC charger, the charging on DC charger will be also slower?

best

No, completely separate things. There’s a rating for AC, 400VDC, and 800VDC. All 3 ratings are independent.

 

[4thPcar]

 

[4thPcar]

Oops. You got two of each! These are in my garage currently. Appreciate all advice! Thanks Jeremy

 

[Jhenson29]

That’s a 14-50 receptacle, likely on a 50-amp breaker (you’d have to check) and (if so) is good for 40-amps of charging, which is 9.6kW on 240VAC.

This is also what the standard PMC+ that comes free with the car will do, 40-amps on a 14-50 receptacle. I have this in my garage as a backup to my 18kW EVSE.

 

[daveo4EV]

you will not benefit from the 19.2 kW - your charging setup is NEMA 14-50 240v @ 50 amps - 9.6 kW charging rate

the 400V/150 kW charger is potentially more useful for public fast charging in the future - and it’s a cheap option by Porsche standards.

the 19.2 kW charger will see very very very very little use in North American unless you spring for an expensive 240V 100 amp circuit for your home charging situation and then also purchase a 240v 100 AMP EV charger for your home. by my estimate it’s at least $5,000 to take advantage of this setup for a home charging scenario

$2,000 for the 19.2 kW option from Porsche
$2,000 for the 19.2 kW EVSE (EV charger from ClipperCreek)
$1,000 (at least) for an Electrician to “add” a 240 volt 100 amp circuit to your home - this could be much much much more than $1,000 depending on your particular circumstance.

you don’t need the 19.2 kW charger and it won’t be used very much in your ownership period with the vehicle.

 

[4thPcar]

Thanks both! Is the onboard charger something that can be added later for the Taycan?

 

[Jhenson29]

Thanks both! Is the onboard charger something that can be added later for the Taycan?

You’d have to ask your dealer, but my guess is no. At least, not by Porsche.

 

[daveo4EV]

Thanks both! Is the onboard charger something that can be added later for the Taycan?

assume no -it’s the safer course of action.

 

[Jhenson29]

by my estimate it’s at least $5,000 to take advantage of this setup for a home charging scenario

$3860 for me. ?

$1680 for 19.2kW option
$1239 for 18kW EVSE
$1875 for electrical work
-$934 in expected tax credit for electrical work and EVSE

https://clippercreek.com/tax-credits/

Receive a federal tax credit of 30% of the cost of purchasing and installing an EV charging station (up to $1,000 for residential installations and up to $30,000 for commercial installations).

 

[Fedex77]

I debated optioning the 19kwH charger and installing it, but it would have been about $3000-4000 more than my 11kwH charging option which is native to the Taycan and only required a 60A hardwired EVSE instead of the 80A one. Also, the 2021 had a faulty 19kwH charger anyways so I’m glad I didn’t get it. Long story short, I charge my Taycan only once every 2 weeks based on my limited commute and usage. The faster charger would not benefit me.

I did get the 400V 150kW charger because it was cheap and didn’t want to get to get stuck at a slow charger on a long road trip. It has also been largely useless thus far, but if we ever get access to tesla supercharger, it may be useful (if there’s no EA charger available). I have yet to encounter a 400V charger that is capable of 150kW, most are 50kW. All of my EA charger interactions have been 800V hookups anyways.

Sponsored