DC charging

[Eric]

I have a new 2021 Taycan 4S and I charged for the first time on an electrify america 150Kwatt DC charger.I only got a charge rate of 2.5 miles/minute which I believe is low.I than realized the the gentle charging setting was activated in my car which could account for the measly charge level.Does anybody know how much the charge level would increase if you deactivate this setting?

Sponsored

 

[chrisk]

You are not alone. My car does is a 2020 and it does not have the gentle charging setting but still I have not seen anything more than 60kwh at EA yet.
There are many threads about this topic.

https://www.taycanforum.com/forum/t...as-fast-as-i-want-it-to.779/page-4#post-48245

 

[evanevery]

I have a new 2021 Taycan 4S and I charged for the first time on an electrify america 150Kwatt DC charger.I only got a charge rate of 2.5 miles/minute which I believe is low.I than realized the the gentle charging setting was activated in my car which could account for the measly charge level.Does anybody know how much the charge level would increase if you deactivate this setting?

"Gentle Charging"? What is "Gentle Charging"?

In order to determine if you were getting a good charging rate we need to know the SOC (State of Charge) of your car when you hooked up. Also, I have no idea of what 2.5 Miles/minute is in KW. Most of us reference KW for the charging rate...

Just because the "charger" is rated for a particular output, you should not expect to see that output across the whole SOC for your car. For example, even with a 350KW charger, I would only expect to see anything near 350KW at around 5-10% SOC. Charging rates will taper to about 125KW at 85% regardless of how powerful the charger is. It will then taper much more as you approach 100%.

Anyone know what 2.5 Mi/Minute equates to in KW?

(200 mi) / (2.5 mi/minute) = 80 minutes to "fill up" a 85KWHr battery, so I'm guessing ABOUT 65 KW (85 / (80/60))?

 

[Eric]

"Gentle Charging"? What is "Gentle Charging"?

In order to determine if you were getting a good charging rate we need to know the SOC (State of Charge) of your car when you hooked up. Also, I have no idea of what 2.5 Miles/minute is in KW. Most of us reference KW for the charging rate...

Just because the "charger" is rated for a particular output, you should not expect to see that output across the whole SOC for your car. For example, even with a 350KW charger, I would only expect to see anything near 350KW at around 5-10% SOC. Charging rates will taper to about 125KW at 85% regardless of how powerful the charger is. It will then taper much more as you approach 100%.

Anyone know what 2.5 Mi/Minute equates to in KW?

I used 28 Kwatts for 25.3 minutes of charging and the start was 40% of battery capacity.The gentle DC charging setting in the car is a new 2021 addition to the Taycan charging protocols to preserve battery capacity

 

[chrisk]

"Gentle Charging"? What is "Gentle Charging"?

It is a new feature in 2021 models to reduce the max DC charge rate but it does not seem related to the OP's observation. This feature is supposed to throttle at 200kwh.

"Battery preservation while charging is another function that is new for the 2021 model year. It can regulate the charging capacity at suitable charging points (e.g. DC fast charging stations) to around 200 kW, when customers are planning to make a longer stop. This extends the battery’s service life and reduces the overall power loss while charging. Drivers can select this function using the central display. Of course, if customers choose not to use this option, a charging capacity of up to 270 kW remains available at 800-volt high-power charging stations."


source: https://newsroom.porsche.com/en_US/...unctions-on-demand-head-up-display-21885.html

 

[evanevery]

I used 28 Kwatts for 25.3 minutes of charging and the start was 40% of battery capacity.The gentle DC charging setting in the car is a new 2021 addition to the Taycan charging protocols to preserve battery capacity

28 / (25.3/60) = 66.4KW as your average charging rate is pretty close to my WAG (65KW)!

I would expect my car to take about 250KW at 40%, taper to about 125kw @ 85%, and below 50KW after passing 90%. Did you take it all the way up to 100%?

25.3 minutes to fully top up your car (from 40%) is not unreasonable in "real" EV life. Most of my roadside stops are at least 25 minutes... How long were you expecting it to take?

I had no idea they added that option. Turn it off?

 

[Eric]

28 / (25.3/60) = 66.4KW as your average charging rate is pretty close to my WAG (65KW)!

I would expect my car to take about 250KW at 40%, taper to about 125kw @ 85%, and below 50KW after passing 90%. Did you take it all the way up to 100%?

25.3 minutes to fully top up your car (from 40%) is not unreasonable in "real" EV life. Most of my roadside stops are at least 25 minutes... How long were you expecting it to take?

I had no idea they added that option. Turn it off?

Yes I did turn it off and will find out soon if the charging rate will go up significantly.The Audi Etron next to me was charging 5 miles /minute and that is why I started questioning my charge rate and found out about the "gentle" setting in the charging protocol

 

[Eric]

It is a new feature in 2021 models to reduce the max DC charge rate but it does not seem related to the OP's observation. This feature is supposed to throttle at 200kwh.

"Battery preservation while charging is another function that is new for the 2021 model year. It can regulate the charging capacity at suitable charging points (e.g. DC fast charging stations) to around 200 kW, when customers are planning to make a longer stop. This extends the battery’s service life and reduces the overall power loss while charging. Drivers can select this function using the central display. Of course, if customers choose not to use this option, a charging capacity of up to 270 kW remains available at 800-volt high-power charging stations."


source: https://newsroom.porsche.com/en_US/...unctions-on-demand-head-up-display-21885.html

What is the charge rate supposed to be at a 150 Kwatt station starting at 40% battery in terms of miles per minute?Appreciate the feedback

 

[Eric]

28 / (25.3/60) = 66.4KW as your average charging rate is pretty close to my WAG (65KW)!

I would expect my car to take about 250KW at 40%, taper to about 125kw @ 85%, and below 50KW after passing 90%. Did you take it all the way up to 100%?

25.3 minutes to fully top up your car (from 40%) is not unreasonable in "real" EV life. Most of my roadside stops are at least 25 minutes... How long were you expecting it to take?

I had no idea they added that option. Turn it off?

The battery in 25 minutes went from 40% to about 65% but not to a 100% so a bit slow for my liking

 

[Scandinavian]

Yes I did turn it off and will find out soon if the charging rate will go up significantly.The Audi Etron next to me was charging 5 miles /minute and that is why I started questioning my charge rate and found out about the "gentle" setting in the charging protocol

If you had an Etron beside you at a 150 kW charger, you might have shared the 150 kW with that. Depending on charger type it might only give 150 kW in total and if two charge at the same time it reduces!

Also toggle the charge rate from miles per minute to kW on the charge screen. That makes much more sense to look at. See photos below.

Just press on the kW or miles/ min to toggle

 

[evanevery]

What is the charge rate supposed to be at a 150 Kwatt station starting at 40% battery in terms of miles per minute?Appreciate the feedback

Please work with us here... Basically, the whole community works in KW - not Mi/Minute...

If 2.5 Mi/min equates to about 65KW (as my "WAG" SEEMS to confirm)...

Then "I would expect my car to take about 250KW at 40%, taper to about 125kw @ 85%, and below 50KW after passing 90%" could be converted as follows:

40% ~ 250KW ~ 9.6 Mi/Min
85% ~ 125 KW ~ 4.8 Mi/Min
90%+ ~ 50KW ~ 1.9 Mi/Min

...and its going to be very tough to compare your charging rates to the Audi's without ALSO knowing what his SOC was at the time you got that info. You do understand that the rate of charge continually changes (decreases) throughout the charging process, right?

Once again, How long did you expect it to take to charge your car from 40% to 100%. I think 25 minutes is pretty reasonable!

 

[Eric]

"Gentle Charging"? What is "Gentle Charging"?

In order to determine if you were getting a good charging rate we need to know the SOC (State of Charge) of your car when you hooked up. Also, I have no idea of what 2.5 Miles/minute is in KW. Most of us reference KW for the charging rate...

Just because the "charger" is rated for a particular output, you should not expect to see that output across the whole SOC for your car. For example, even with a 350KW charger, I would only expect to see anything near 350KW at around 5-10% SOC. Charging rates will taper to about 125KW at 85% regardless of how powerful the charger is. It will then taper much more as you approach 100%.

Anyone know what 2.5 Mi/Minute equates to in KW?

(200 mi) / (2.5 mi/minute) = 80 minutes to "fill up" a 85KWHr battery, so I'm guessing ABOUT 65 KW (85 / (80/60))?

Yes that is correct i used 28 kwatts in 25 minutes so 28/25 times 60 is 67 kwatts

 

[evanevery]

Yes that is correct i used 28 kwatts in 25 minutes so 28/25 times 60 is 67 kwatts

Yes, I already did that calculation above. That was what I used to confirm my "WAG"...

 

[Eric]

If you had an Etron beside you at a 150 kW charger, you might have shared the 150 kW with that. Depending on charger type it might only give 150 kW in total and if two charge at the same time it reduces!

Also toggle the charge rate from miles per minute to kW on the charge screen. That makes much more sense to look at. See photos below.

Just press on the kW or miles/ min to toggle

Thanks a bunch i did not know you could do this

 

[evanevery]

...additionally, if it took you 25 minutes to charge 40-100%, you might have been able to get out of there @85% in maybe 15 minutes. That last 10% takes a disproportionately long time...

Most folks don't charge to 100% (even on a road trip) unless they actually need it. How much charge did you actually need?

Again, RELAX! I think 25 minutes to charge from 40-100% is pretty typical.

Sponsored