Always Be Fast Chargin'?

[UserNameRequired]

My Taycan supposedly will show up at EOM (fingers crossed.)

In the meantime, I've discovered there's an EA charge facility with like 8 chargers 2 blocks away from my child's school. Is there a danger to the battery life by weekly (primary) fast charging? I recall years ago there was a company that was running a Tesla fleet for commercial purposes (think they were driving people to/from LA to Vegas?) and they discovered the constant supercharging changed the battery chemistry for the worst? That was years ago, so I was wondering if charging/battery chemistry have advanced to make this a concern? I think they were also using it twice a day...

Of course after spending 170k on the car, I want my free 40 bucks a month in charging!

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[ciaranob]

My Taycan supposedly will show up at EOM (fingers crossed.)

In the meantime, I've discovered there's an EA charge facility with like 8 chargers 2 blocks away from my child's school. Is there a danger to the battery life by weekly (primary) fast charging? I recall years ago there was a company that was running a Tesla fleet for commercial purposes (think they were driving people to/from LA to Vegas?) and they discovered the constant supercharging changed the battery chemistry for the worst? That was years ago, so I was wondering if charging/battery chemistry have advanced to make this a concern? I think they were also using it twice a day...

Of course after spending 170k on the car, I want my free 40 bucks a month in charging!

Have a look at this thread - need to scroll down midway in first post to see graph reproduced below amongst others and links to relevant web site but yes heavy DC charging vs AC can have a more detrimental effect on SoH of a battery but the actual differences may not be deemed significant - ymmv

Thread link: #1

 

[UserNameRequired]

Oh thank you kindly for this.

 

[tchavei]

I'm always DC charging. Can't charge at home and I refuse to hook up my car at work on 3.7Kw at premium prices (yes, they charge you per minute).

Now, when I say DC charging, I don't mean high speed charging. I mostly charge at 45-50kW which is 0.5C (charge rate at half of the battery capacity) which is not fast charging.

My OBDII tool should arrive tomorrow so I can pull some State of Health data about my battery. I don't expect miracles in my "warm" location but I also don't expect a huge degradation either.

 

[UserNameRequired]

I'm always DC charging. Can't charge at home and I refuse to hook up my car at work on 3.7Kw at premium prices (yes, they charge you per minute).

Now, when I say DC charging, I don't mean high speed charging. I mostly charge at 45-50kW which is 0.5C (charge rate at half of the battery capacity) which is not fast charging.

My OBDII tool should arrive tomorrow so I can pull some State of Health data about my battery. I don't expect miracles in my "warm" location but I also don't expect a huge degradation either.

I’d definitely be interested in the results, thanks!

 

[W1NGE]

My Taycan supposedly will show up at EOM (fingers crossed.)

In the meantime, I've discovered there's an EA charge facility with like 8 chargers 2 blocks away from my child's school. Is there a danger to the battery life by weekly (primary) fast charging? I recall years ago there was a company that was running a Tesla fleet for commercial purposes (think they were driving people to/from LA to Vegas?) and they discovered the constant supercharging changed the battery chemistry for the worst? That was years ago, so I was wondering if charging/battery chemistry have advanced to make this a concern? I think they were also using it twice a day...

Of course after spending 170k on the car, I want my free 40 bucks a month in charging!

Follow the recommendations in the owners manual.

Definition of "fast" should also be considered. Typically any EVSE providing 125kW or more are classed as "ultra fast".

The PCM has as a user setting to protect the battery when ultra fast charging is used which limits the maximum power - typically from 350kW EVSEs - and throttles back.

Regular 50kW DC charging shouldn't be an issue.

Personally, I would charge with the fastest available and let the car manage the charging remembering that you have an 8yr battery.warranty.

 

[mystermykee]

Follow the recommendations in the owners manual.

Definition of "fast" should also be considered. Typically any EVSE providing 125kW or more are classed as "ultra fast".

The PCM has as a user setting to protect the battery when ultra fast charging is used which limits the maximum power - typically from 350kW EVSEs - and throttles back.

Regular 50kW DC charging shouldn't be an issue.

Personally, I would charge with the fastest available and let the car manage the charging remembering that you have an 8yr battery.warranty.

What's the degradation percentage deviation that would warrant an HV battery replacement?

 

[W1NGE]

What's the degradation percentage deviation that would warrant an HV battery replacement?

It's in your warranty the specific degradation over time. Posted elsewhere on this forum also.

 

[UserNameRequired]

What's the degradation percentage deviation that would warrant an HV battery replacement?

For the US, the 2023 warranty -

• 100% of net battery capacity on the date the car is first delivered to the first retail purchaser or the date it is first used as a demonstrator, lease, or company car, whichever comes first.
• 80% of net battery capacity within the first 3 years/37,500 miles, whichever occurs first.
• 70% of net battery capacity within the first 8 years/100,000 miles, whichever occurs first.

and then a bit further

. The measurement method used to determine net battery capacity and the decision of whether to repair, replace, or provide reconditioned or remanufactured parts, and the condition of any such replaced, reconditioned, or remanufactured parts, are at the sole discretion of PCNA.

 

[WasserGKuehlt]

For the US, the 2023 warranty -
[..]

• 80% of net battery capacity within the first 3 years/37,500 miles, whichever occurs first.

and then a bit further

. The measurement method used to determine net battery capacity [...] are at the sole discretion of PCNA.

Translation:

Customer: "80% of what?"
PCNA: "Exactly."

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