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Promising news: Tesla finally deploying 800V charging!

2.4K views 8 replies 4 participants last post by  Arob  
#1 ·
Tesla announces 500 kW charging as it finally delivers V4 Supercharger cabinets


It will take some time, but some have speculated V3 chargers may be capable of higher voltages as well?

Interesting that they will power 8 stalls per power pack. Should improve installation time and cost.
 
Discussion starter · #3 ·
Having 8 stalls per cabinet definitely seems like it’s going to employ some widespread power sharing. Not much of an issue when everything there is a Tesla that only holds peak power for a moment, but… some of the other OEM’s cars have much flatter charge curves so it’ll be interesting to see how that works out during peak times.
Tesla uses a shared DC power bus approach to getting energy from the cabinet to plugs. The bus will have greater energy capacity than the individual chargers.

With V3 chargers, the cabinet clusters contain up to 3 350kW cabinets which output to the DC bus, which is then distributed to 4 stalls. Given the 1050kW DC bus, it has plenty of capacity for the 4 250kW units.

Who knows how they will deploy V4 cabinets, but it is speculated that V3 chargers may be capable of using the V4 DC power bus, and thus may be capable of 800V EV charging at full power. I believe more recent V3 units have labels indicating support for 1000V input, though they may be current constrained to 250kW output at 1000V? That would make sense given their fleet's requirements, but also leverages their practice of leaving reliable, good enough equipment in the ground rather than swapping in new charging pile hardware.

It seems logical that the V4 cabinet clusters will output 500kW each at 1000V, and would be deployed in 3-4 cabinets combining to the DC bus. Thus, 8 stalls could pull somewhere in the range of 8 X 350kW (2.8MW combined). But, they may dial that back a little given the majority of Teslas (excluding CT) are limited to 250kW peak. So, at 8 X 250kW, the bus would deliver up to 2MW. They could cut this a bit further on the assumption that out of 8 stalls, on average, only 2 might be delivering 250kW at a time, the rest might be averaging somewhere in the 150 - 200kW range and that would only require the cabinets be able to deliver something like 1.5MW using 3 cabinets. Sure, it could result in short periods of reduced charging speeds, but the law of large numbers would be in their favor.

I expect Kyle Conner to do a deep dive into this really soon, maybe along with Brandon Flasch who is a Technical Sales Manager for Alpitronics now. They dug deep into the SuC DC bus architecture in a video right after EA started deploying their balanced 350kW units. This would seem to be a logical follow on tech dive for their podcasts.
 
Discussion starter · #5 ·
I've never owned a Tesla, never will .. I bought an Ionic 5 because it's a better car.

Why should I care that about a promise from a guy like Elon Musk? .. I think he's gone off the deep end and I want nothing to do with his supercharger network, NACS charging standard, bla bla bla ..

Simply Put:

At this point he's doing more harm than good.
Sure, if you never go on roadtrips, or the routes you take are well served by other networks, this is a big nothing burger.

A lot of Ioniq owners have routes they usually take that have limited charging, but Tesla V3 or later chargers, which should become available in the early part of 2025.

It isn't so much about supporting Musk, but being able to get places with less hassle. When access is granted, our choices of where to charge will nearly double. But their 400V chargers aren't as useful as these 800V+ units will be.

I am more like you in that my typical routes have decent CCS choices. So, my expectation is I will rarely use Tesla chargers. But, it is nice to know there are more options, and those options are becoming more useful.
 
Discussion starter · #7 ·
I'm looking forward to the day (I can see light!) where "range anxiety" is a big nothing-burger.
What is Range Anxiety? LOL

After going coast to coast in a Bolt, I seem to have completely forgotten about Range Anxiety!
 
Discussion starter · #9 ·
Try doing it in an EV-1! With 125 miles range. in 1999 (IIRC)!

I'm unable to find anything documenting it, but it was quite an adventure for the driver. Lots of RV parks and charge cable adapters along the way
Would love to see a video or website documenting it... could add that to replies when people ask about mobile chargers and all the adapters they (don't) need anymore due to all of the public chargers! LOL