JohnnyDadBod
Well-known member
- Joined
- Jun 4, 2024
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- Location
- Tampa, FL
- Vehicles
- Foundation Series AWD, 2022 Model X
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- #1
Yesterday I was about to Supercharge after getting the 2024.20.7 update the night before which includes improvements to DC Fast Charging. I went back over my previous Supercharging sessions from prior software versions and found the closet comparison I could find at a V3 charger with as close as starting SoC levels as possible. Without further ado here is the plot of both sessions:
The 2024.20.7 curve overall is improved throughout most of the charge curve except from 13%-28% or so. I believe this was due to charge handle temperature as the stall I selected had a hot to the touch handle, which for comparison purposes I am going to assume was just used prior to my arrival so it was already hotter than ideal as I began charging. I didn't bring a rag and water with me to try to charging handle cooling trick as I wanted to test with as few variables as possible and no hacks to simulate what the average person would see. As you can see, in the curve the charge rate began to recover from the initial dip around 20% SoC and it continue to slowly climb till around the 35% SoC point. I need to retest under better conditions to see if the rapid drop in charge rate was indeed due to handle temps and not some other charge logic changes attempting to manage thermals which reduces peak charge rates in exchange for overall faster charge levels when averaged across the charging session.
I was able to add ~120miles in 15 minutes which is not close to the 154 miles in 15 minutes which has been touted on Twitter:
I did not arrive at an extremely low SoC and had what I believe to be a potential charging limit caused by the charging station and not the truck itself. I will try to redo the testing and see if I can do a better comparison, but for now I wanted to get this out to share with everyone. I don't have any of the required CCS adapters to try 1000V 350kW charging stations, so I'll leave that testing to others till there are native NACS 1000V chargers near me.
The 2024.20.7 curve overall is improved throughout most of the charge curve except from 13%-28% or so. I believe this was due to charge handle temperature as the stall I selected had a hot to the touch handle, which for comparison purposes I am going to assume was just used prior to my arrival so it was already hotter than ideal as I began charging. I didn't bring a rag and water with me to try to charging handle cooling trick as I wanted to test with as few variables as possible and no hacks to simulate what the average person would see. As you can see, in the curve the charge rate began to recover from the initial dip around 20% SoC and it continue to slowly climb till around the 35% SoC point. I need to retest under better conditions to see if the rapid drop in charge rate was indeed due to handle temps and not some other charge logic changes attempting to manage thermals which reduces peak charge rates in exchange for overall faster charge levels when averaged across the charging session.
I was able to add ~120miles in 15 minutes which is not close to the 154 miles in 15 minutes which has been touted on Twitter:
I did not arrive at an extremely low SoC and had what I believe to be a potential charging limit caused by the charging station and not the truck itself. I will try to redo the testing and see if I can do a better comparison, but for now I wanted to get this out to share with everyone. I don't have any of the required CCS adapters to try 1000V 350kW charging stations, so I'll leave that testing to others till there are native NACS 1000V chargers near me.
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