Tesla Club Sweden

Hi everyone. I just got off the phone with Tesla with some disturbing news.

My car has approximately 30,000 miles on it. I regularly use CHADeMo to charge my car, with the occasional Supercharger charge on road trips. On my last road trip, I noticed that my supercharging rate was significantly reduced, usually staying between 75 kw and 90 kw. At first, I thought it was the station, but each Supercharger on my trip had the same behavior. So I bought my car in for service last week.

After the technicians went over the and presumably consulted with the mothership, it was determined that the car has now entered a permanent degraded mode where it will no longer allow fast charging to "prevent battery degradation." Read that again... that's right... if you use Superchargers or any DC Fast Charging, including CHADeMo, your car will eventually enter into a permanently degraded mode that will prevent you from charging your car at reasonably fast speeds.

I am, to say the least, livid. I am waiting for a call back from management, but presumably, they are going to explain to me that there is nothing they can do. This is akin to the Ludicrous launches being restricted, without warning or any communication from Tesla. But this... is much worse.

It's worse because it affects every Tesla vehicle. Every Tesla, not just Ludicrous mode Teslas, will permanently and irrevocably degrade their charging capabilities if you use DC Fast Charging of any kind more than the unusual rare occasion.

I'm honestly speechless at this. To the best of my knowledge, it has never been communicated from Tesla, until now, that using any kind of DCFC will permanently degrade your vehicle. Yes, we all know that charging to 100% regularly is a bad thing, but just regularly DC charging is also apparently just as bad, according to Tesla. But to make matters worse, it's not the battery that's degraded or causing the slow down, it's Tesla's charging algorithm that will slowly start to degrade your charging on each "count" of DCFC. According to the tech I talked to, there is an internal counter that increments each time you DC charge, and once that reaches certain thresholds, it starts restricting your top end charging ability. Presumably, if one keeps charging DC, over time, you will be restricted further and further.

This, ostensibly, to prevent Tesla from having to pay out to replace degraded batteries under their unlimited mile warranty. So over time, it will take longer and longer to charge your car. Already, this adds a significant amount of time to my road trips by restricting my charging from a previous high of 117 kw to ~90 kw on a good day. Road tripping in my Telsa already takes 2x as long as a gas car, but now it's taking even longer. I can't imagine wanting to take this car on any further road trips at this point.

Tesla needs to do something about this. This is not ok. It is not ok to remove critical functionality from the vehicle, every vehicle, without warning and without prior notice. I simply would not have purchased this car if I was informed that it would lose the ability to charge the battery over time, especially such a short time frame (1 year / 30k miles).

Concern: Customer states: speed of charging at Superchargers is topping out at lower
speeds then previously observed. This has happened at multiple superchargers recently.
Pay Type: Goodwill
Corrections: Supercharger General Diagnosis Conclusion: No Trouble Found
Review vehicle logs and verify charging is topping out a lower rate than observed on
earlier DC charging sessions. According Tesla engineers once vehicle has been DC fast
charged over a specified amount, the battery management system restricts DC charging to
prevent degradation of the battery pack. According Tesla engineers, this vehicle has seen
significant DC fast charging and is now has permanently restricted DC charging speeds.
Important to note, supercharging will always still be available to the vehicle and the battery
pack has not yet experienced significant degradation due to the amount of DC fast
charging performed on the pack up until this point in time. Vehicle is operating as
designed.

Nyren skrev:

Hur hög effekt brukar ni få då? Jag har aldrig kommit över 95kW med min 60D.

Smutt skrev:

Alltså vem kör bil så ladda likström 2 av 3 dagar året runt?

Feddan skrev:

Smutt skrev:

Alltså vem kör bil så ladda likström 2 av 3 dagar året runt?

Han har väl bott bredvid en Supercharger eller nåt.

vigge50 skrev:

Feddan skrev:

Smutt skrev:

Alltså vem kör bil så ladda likström 2 av 3 dagar året runt?

Han har väl bott bredvid en Supercharger eller nåt.

Om man läser tråden så har han använt CHadome vid jobbet och nästan aldrig laddat med AC.

Smutt skrev:

vigge50 skrev:

Feddan skrev:

Smutt skrev:

Alltså vem kör bil så ladda likström 2 av 3 dagar året runt?

Han har väl bott bredvid en Supercharger eller nåt.

Om man läser tråden så har han använt CHadome vid jobbet och nästan aldrig laddat med AC.

Är inte chademo likström

LarsL skrev:

Min far lär ju snart vara uppe i 245 DC-laddningar eftersom han vägrar inse att bilen ska laddas hemma...

Nu skulle detta kunna vara FUD också! Hur ser källan ut?