Hey all --
I was thinking about what the most efficient charge rate was for our car taking into account that slower rates are better for the battery, but higher rates are more efficient. I thought there was a happy area in the middle that I could choose if I could see the data. I subscribe to TeslaFi.com. Our 3 DM AWD was bought on June 30th this year. We have a Tesla Wall Connector that is connected to the panel with a NEMA 14-50 outlet using 6 gauge wire to a 220v 50A breaker across about 50' distance. All I did was export the data from TeslaFi.com on our charges and remove any charges that were under an hour in time. Pretty interesting, I think I'm going to roll with 32A. Seems to be the most efficient while being the slowest. I would think that I could probably get away with something in the 26-28A range too, but I haven't charged in that area to get any data on it. Maybe I'll try a couple and see how those show up on the chart. Seems like charging at 32A gives me somewhere between 96-98% efficiency - almost identical to charging at 40A. When I charge around 21A, you can see a clear loss of around 2% in the range (~94-96%). Interesting data so I thought I'd share. Let me know if anyone has any questions.
I was thinking about what the most efficient charge rate was for our car taking into account that slower rates are better for the battery, but higher rates are more efficient. I thought there was a happy area in the middle that I could choose if I could see the data. I subscribe to TeslaFi.com. Our 3 DM AWD was bought on June 30th this year. We have a Tesla Wall Connector that is connected to the panel with a NEMA 14-50 outlet using 6 gauge wire to a 220v 50A breaker across about 50' distance. All I did was export the data from TeslaFi.com on our charges and remove any charges that were under an hour in time. Pretty interesting, I think I'm going to roll with 32A. Seems to be the most efficient while being the slowest. I would think that I could probably get away with something in the 26-28A range too, but I haven't charged in that area to get any data on it. Maybe I'll try a couple and see how those show up on the chart. Seems like charging at 32A gives me somewhere between 96-98% efficiency - almost identical to charging at 40A. When I charge around 21A, you can see a clear loss of around 2% in the range (~94-96%). Interesting data so I thought I'd share. Let me know if anyone has any questions.