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So I scheduled an appointment for this issue today and without any type of communication from Tesla I was pushed a software update. I’m now on 48.12.1. I’ll report back if this fixed the issue. Just wanted to let you know if your experiencing this issue schedule an appointment and there will push the update to your car... it seems.
Mine is still not charging correctly when cold on 2020.48.12.1, but I just noticed I have software update 2020.48.26. We'll see what happens after the update in installed..
Do you have any error messages when you look under "Controls --> Service --> Notifications" ?
Charging started by timer at 22:00, but it only used about 150W power.. Maybe the battery heater? At midnight I noticed that it is still only using only 150W, and we would need the car early in the morning.
Yeah, 150W is just some slightly more awake state of a computer. That's not enough to be any kind of heating. And battery heating systems shouldn't take more than an hour to "ramp up". They are safe to turn on nearly instantly, or within a few seconds anyway.I don't think 150W is enough to actually warm up the battery, that's not even 10% the heat of my wife's hair dryer.
While I wouldn't want to rest my hand on a 150W incandescent light bulb, when that heat is spread out over 7000+ individual battery cells that are well under freezing, it's not much.
@Zuikkis: Please explain the resolution of your graph. I think we experience the same problem, but my graph is in 1 minute segments of resolution (post #50), but your graph looks like it is in 1 hour duration segments.