porsche_coyote

Well-Known Member
First Name
Wiley
Joined
Nov 23, 2019
Messages
293
Reaction score
434
Location
San Francisco, California USA
Vehicles
Porsche Taycan Turbo, Audi allroad, VW e-golf, BMW i3
Country flag

vaelin

Member
First Name
Alex
Joined
May 19, 2021
Messages
10
Reaction score
19
Location
Silicon Valley USA
Vehicles
Taycan Turbo S, 997.1 TT, Tesla XPL & 3P
Country flag
I came here to post the same thing.

It doesn't seem "inventive" however.. this is a problem that was difficult to solve. Similar issues with early Tesla Model S / X and the charging logic (dictated by the onboard charger). It does seem relevant, although short on evidence.
 

tigerbalm

Well-Known Member
Joined
Oct 11, 2020
Messages
928
Reaction score
1,417
Location
Ireland
Website
www.youtube.com
Vehicles
Peugeot e-208, Taycan 4S
Country flag
So is this the AC charger they are talking about ? And is it the same for the standard and the 22kW ones?
 

JimBob

Well-Known Member
First Name
James
Joined
Jan 26, 2021
Messages
616
Reaction score
708
Location
Toronto Canada
Vehicles
Taycan 4S
Country flag
Bizarro world.

Took only seconds to find this. "The 800V architecture of the Taycan, a vehicle the German automaker is proud of, has many advantages, but the strong current requires a very well-controlled charging process to avoid charging some cells faster than others."

800v requires LESS current for the same power. That's the whole point of 800v.

There is a bullshit cottage industry out there of misinformation, deception and dumbness.
 

Kingske

Well-Known Member
First Name
Frank
Joined
Jun 6, 2020
Messages
1,233
Reaction score
1,391
Location
New Jersey, USA
Vehicles
2020 Porsche Taycan 4S, 2014 BMW 3 GT
Country flag
So, if your Taycan remains parked outside - exposed to the direct sunlight - for two weeks, Porsche would drop your battery warranty down to 60,000 km (37,500 miles)??? What happens after three weeks? Porsche comes to evict you from your home and seizes it?
 
Last edited:

daveo4EV

Well-Known Member
First Name
David
Joined
Jan 28, 2019
Messages
2,676
Reaction score
4,276
Location
Santa Cruz
Vehicles
Tesla(s), 911 GT3, Boxster S, Bolt, Taycan, Cayenn
Country flag
hmmmm - many contradictory statements in that article - I would guess something is up - but this article is not it…but if Porsche replaced my onboard charger would I get Plug&Charge? :rock:
 

XLR82XS

Well-Known Member
First Name
LXA
Joined
Mar 31, 2021
Messages
1,413
Reaction score
900
Location
SW FL | Vegas
Vehicles
2021 Taycan | 2021 Cayenne GTS | 2018 991.2
Country flag
Why would the charger be different in the E-tron if they share so much of the platform?
 

tigerbalm

Well-Known Member
Joined
Oct 11, 2020
Messages
928
Reaction score
1,417
Location
Ireland
Website
www.youtube.com
Vehicles
Peugeot e-208, Taycan 4S
Country flag
Why would someone with serious info like this whistleblower contact a Tesla orientated site (I'd never heard of it) and not something like Financial Times or similar. They'd have the resources and processes to verify this.

The article mentions that the motivation for the whistleblower is to highlight the safety issues that they are bringing to light.

It just seems like a strange publication to do this with – unless other publishers rejected the story.
 

Chris8536

Well-Known Member
First Name
Chris
Joined
Apr 10, 2021
Messages
206
Reaction score
155
Location
San Francisco
Vehicles
Taycan 4S
Country flag
Why would someone with serious info like this whistleblower contact a Tesla orientated site (I'd never heard of it) and not something like Financial Times or similar. They'd have the resources and processes to verify this.

The article mentions that the motivation for the whistleblower is to highlight the safety issues that they are bringing to light.

It just seems like a strange publication to do this with – unless other publishers rejected the story.
As a former journalist, I find this to be normal. An FT writer won't care until a few industry specific blogs pick it up and start writing about it -- then they might dig in. Normally going to a reporter with this type of content leads them to shelve it as its too risky to just run with it.
 

Windpower

Well-Known Member
First Name
Ken
Joined
Jul 19, 2021
Messages
195
Reaction score
111
Location
Long Island, NY
Vehicles
Tesla Model Y, BMW X3, Taycan RWD Coffee
Country flag
While I'm not saying this is BS or not, its possible that none of us have seen this problem:

"The problem occurs when the batteries are charged at a low AC speed of up to 7.5 KW, a common use case for all charging, such as at home or on low-speed chargers, the source said. "

On a 240v EVSE, this would be 30 amps or less. I know my EVSE is 40 amps so according to this article, I wouldn't be affected? How many people charge at 7.5kw or less? Is low AC charging rate up to 75kw common?

"The problem affects six of ten delivered vehicles"

Maybe, but if few people charge below 7.5kw, maybe this problem is not seen in the real world?

Confusing even more is the premise of this article: that "the Taycan’s 800V high-voltage onboard charger used today does not control the charging process well enough and can overcharge some battery cells ". Which seems to imply this is a high voltage DC charging issue, not a low-speed. low voltage charging issue.

Confusing? BS? Who knows.
 
OP
OP
porsche_coyote

porsche_coyote

Well-Known Member
First Name
Wiley
Joined
Nov 23, 2019
Messages
293
Reaction score
434
Location
San Francisco, California USA
Vehicles
Porsche Taycan Turbo, Audi allroad, VW e-golf, BMW i3
Country flag
While I'm not saying this is BS or not, its possible that none of us have seen this problem:

"The problem occurs when the batteries are charged at a low AC speed of up to 7.5 KW, a common use case for all charging, such as at home or on low-speed chargers, the source said. "

On a 240v EVSE, this would be 30 amps or less. I know my EVSE is 40 amps so according to this article, I wouldn't be affected? How many people charge at 7.5kw or less?

"The problem affects six of ten delivered vehicles"

Maybe, but if few people charge below 7.5kw, maybe this problem is not seen in the real world?

Confusing even more is the premise of this article: that "the Taycan’s 800V high-voltage onboard charger used today does not control the charging process well enough and can overcharge some battery cells ". Which seems to imply this is a high voltage DC charging issue, not a low-speed. low voltage charging issue.

Confusing? BS? Who knows.
I routinely charge at public level 2 chargers that charge at 5.5 kW (at my office, for example). In fact, you'll find a lot of commercial locations in the US with such low-power chargers because of the way power is delivered to those locations; they get three-phase 208V power rather than split-phase 240-volt power that residential locations in the US get.

I'll add: I haven't seen any battery issues, period. I've had my frustrations with the car, but the HV battery has been trouble-free.
 
Advertisement

 
SRM Autosports
Advertisement
Top