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FWIW i tried this on a 2022 Model Y with the new software update 2022.40.x with a chademo adapter on 125amp station AND.........it still heated the battery the whole way at about 7kW.
What did you expect it to do? It's quite possible that was necessary depending on battery temp and preconditioning time before you reached the SC.FWIW i tried this on a 2022 Model Y with the new software update 2022.40.x with a chademo adapter on 125amp station AND.........it still heated the battery the whole way at about 7kW.
I expected you to read the post. the thread is about cars heating the battery during the charging cycle needlesslyWhat did you expect it to do? It's quite possible that was necessary depending on battery temp and preconditioning time before you reached the SC.
Which is true EXCEPT, I have a 3 with induction heater. Wha wha whaaaaaaaaIn cold weather I call this a feature. The battery soaks up some heat during fast charging that is transferred afterwards to the cabin for passenger comfort, instead of using pack electricity. Nice range extender.
I did read the post .. my point was (and remains): how do you know the heating was "needless"? Sure, before the recent update the car was over-doing the battery heating, but that doesnt mean that ALL battery heating is needless. So, again, why do you think in your case the heating was indeed unnecessary?I expected you to read the post. the thread is about cars heating the battery during the charging cycle needlessly
I cannot foresee a reasonable scenario where the battery would need to be heated to accept 125 amps...much less 7 kW worth.I did read the post .. my point was (and remains): how do you know the heating was "needless"? Sure, before the recent update the car was over-doing the battery heating, but that doesnt mean that ALL battery heating is needless. So, again, why do you think in your case the heating was indeed unnecessary?
Because the battery was quite warm enough to take the 45kW up to the charge point I had set which was about 70%.I did read the post .. my point was (and remains): how do you know the heating was "needless"? Sure, before the recent update the car was over-doing the battery heating, but that doesnt mean that ALL battery heating is needless. So, again, why do you think in your case the heating was indeed unnecessary?
Obviously, it would appear that the Tesla engineers disagree with you. (BTW how warm was the coldest cell?)Because the battery was quite warm enough to take the 45kW up to the charge point I had set which was about 70%.
Jesus you guys are anal. Maybe just maybe it still heats the cells. If itwill make people happy i'll hook up scan my tesla and get you all the details but easy math says reducing the charge by 7kW from 20% SOC to 70% SOC is slower than any gain that would have been had by heating the battery the whole time to prevent a taper at 70% when the max the station puts out is around 45kW.Obviously, it would appear that the Tesla engineers disagree with you. (BTW how warm was the coldest cell?)
What is the minimum temperature that you think the battery needs to be at to charge at 45kW from 20-70% while causing the least amount of degradation? (Since you claimed it was warm enough, you must have some number you are using to make that determination.)Jesus you guys are anal. Maybe just maybe it still heats the cells. If itwill make people happy i'll hook up scan my tesla and get you all the details but easy math says reducing the charge by 7kW from 20% SOC to 70% SOC is slower than any gain that would have been had by heating the battery the whole time to prevent a taper at 70% when the max the station puts out is around 45kW.
FWIW it was 80f out when I did this, the car had been driven around a bit and had been kept in a warm garage all night.
What is the minimum temperature that you think the battery needs to be at to charge at 45kW from 20-70% while causing the least amount of degradation? (Since you claimed it was warm enough, you must have some number you are using to make that determination.)
But the purpose of preheating the battery is not just to optimize energy costs, it's also related to battery lifetime. And it's not a matter of being anal, it's that you declared that the car was doing the wrong thing without really explaining why. It may be doing the wrong thing, it may not be. Providing extra data will help everyone determine what changes Tesla have made and how they impact us all.Jesus you guys are anal. Maybe just maybe it still heats the cells. If itwill make people happy i'll hook up scan my tesla and get you all the details but easy math says reducing the charge by 7kW from 20% SOC to 70% SOC is slower than any gain that would have been had by heating the battery the whole time to prevent a taper at 70% when the max the station puts out is around 45kW.
FWIW it was 80f out when I did this, the car had been driven around a bit and had been kept in a warm garage all night.
It absolutely knows the limit of the CHAdeMO adapter is 125A.Also, are you certain the car knows what the station max power output is? Obviously it does for superchargers, but I'm not certain about 3rd party DC chargers.
I cannot foresee a reasonable scenario where the battery would need to be heated to accept 125 amps...much less 7 kW worth.
1 kW is immaterial and wasn't what I was getting at, but I understand your point.My L2 at home is 40 Amps, or about 10 kW.
I would routinely see the Tesla send about 1 kW to the pack and the remainder to heating for the better part of the first 5 minutes of a charging session in the cold of our winter, meaning the pack started out around 20 - 25 F.
Pack damage from charging a cold pack is a very real thing, albeit to a large degree unrecognized or under-recognized by the EV community.
It was only charging at 1kW, it was using the remaining 9kW to heat the pack. (At least that is how I read what they wrote.)1 kW is immaterial and wasn't what I was getting at, but I understand your point.
If that is the case then that is crazy lol and I stand corrected.It was only charging at 1kW, it was using the remaining 9kW to heat the pack. (At least that is how I read what they wrote.)