Jeff4155
Member
But to be fair I do think Tesla should have an explanation for this, even if it is just a computer glitch.
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Varies on the trip. I've gotten her down all the way to 3% while testing and still had charging complete at 99.
As part of the testing, I did perform several charge cycles from High to low. Tesla requested under 20% but I went down under 10% and back up to 90 before attempting another charge to 100.
Have you also noticed slower charging at the top?
@m2140 New battery didn't change the behavior, so you know it's not the battery. Battery has an 8 year warranty too, so really nothing to worry about. If you want to speculate about what is happening, how about this:
Your car charges to 100.00%, then charger disconnects and because heater is on (cabin and/or battery) the load causes the voltage to drop slightly, resulting in 99.44% SoC estimate (which is voltage based).
Have you tried a different charger?
They have been nothing but great but I need a way to get my car fixed.
Th behavior I was talking about was an instant drop of SOC estimate as soon as the charger is disengaged. I've spent over a decade working on battery powered Mobile devices, specializing in power and performance optimizations, and believe me, you can observe this behavior on phones, tablets, etc. Some modern devices do not exhibit this behavior, but that's only because they have a special provision in software that doesn't immediately adjust the displayed SOC to avoid things like this (and % going up and down by small percentage when phone is in use).I have seen this behavior as well and consider it normal.
I've charged to 100% and left the car sit and in 1hr or so the battery level drops. But that is not what is happening here. I've had the car complete charging as low as 96% when set to 100%.
My worry is that the battery management system is not properly balancing the cells. When the issue first started, Charging completed at 99%. In less than a month it went down to 96-98%. If there is something wrong I worry that the charging system could be causing damage to the battery cells. My last battery had a few miles on it and obviously went down quickly after the charging issue showed up.
The new battery has been more consistent, Just worried the new battery can be damaged as well.
Or a sequel to Groundhog Day, the movie.I had to check the date of this post to see if it was 4/1/2017
Don't mention the 50 page thread about Supercharger speed throttling. Oh shoot, look what I just did!Man rich people will complain about anything these days. Nevermind charging to 100% is highly ill-advised for any EV.