142 kW Supercharging rate on 2018 S75D

[peej]

I have a 2018 S75D with 33,000 miles on it. It has the original 350V 75kWH battery pack. Until today i have only ever seen around 117 kW max charge rate when at a low SOC with a warm battery. Today at around 21% SOC, pre-conditioned battery, 14 degress C outside I saw 142 kW at Edinburgh Newbridge V3 charger. the rate was reported as >120 kW for a few minutes.

Is that a fault with the Supercharger, the car or a software bug do you think? Car normally charges on AC - only DC charged once or twice a month. Software is 2022.24.6

I have seen some other posts show brief Supercharging rates above >120kW but not as high as this. Any idea what's happening here?

 

[ucmndd]

Is that a fault with the Supercharger, the car or a software bug do you think?

None of the above. Perfectly normal. You found the sweet spot, plugging in at low 20s state of charge with a warm battery.

This has been the case for at least a few years.

 

[ucmndd]

My 2016 75 back in August 2020:

 

[peej]

None of the above. Perfectly normal. You found the sweet spot, plugging in at low 20s state of charge with a warm battery.

This has been the case for at least a few years.

Wow, thanks. How have I missed that capability until now?

 

[ucmndd]

Wow, thanks. How have I missed that capability until now?

I’ve supercharged a lot. In my experience you’ve got to be right in the perfect window for it to hit that 130-140kw peak. For my car that’s plugging into a v3 charger with a very warm battery somewhere between ~20-25%. Any higher or lower than that and the max I see for the session is ~115-120kw.

 

[PCMc]

I have a mid-2016 MS90D, so different battery pack and won't perfectly match your experience. Here's data I captured on a couple recent trips over that past 6 weeks. About 25 different supercharging sessions. Most all are at different locations, most V3 but a couple V2 and 1 urban supercharger location. Gives you a sense for what the taper curve looks like as well as some of the variation you'll see session to session due to a wide variety of factors. All of these sessions are mid 20ish C ambients. Many represent repeat stops during the same day (traveling 400-600 miles per day), but a couple charging at night at location near hotel after visiting my daughter for the day.

I hit peak rates in the high 20s SOC range. The peak value I captured actually shows at 151 kW at 31% SOC, having plugged in at 30% on that particular session. You'll see even in this peak range I see about a 20 kW variation in peak rate which I'm sure is due to a range of factors, including SOC when I started charging, local supercharger performance variations, and just data sampling frequencies and whether I happen to catch the absolute peak.