The battery cells need to be balanced is what you are referring too and the only way to know what your accurate max range is, is by doing several 100% charges in a row, like 3 lets say. And again just like the BMS doesn't let you drain the battery completely, it also does not let you charge to 100% only around 95%. So when it is 100% SOC it is actually closer to 95%, which would prevent the battery from ever reaching a true 100% charge thus not having the same negative effects of a actual 100% charge. What I am explaining to do here is for owners who have experienced a lot of battery degradation who never charge to 100% to do so asap and see how much their range goes up after doing it, so they have a real idea of how much degradation has actually occurred. The only way to really know that all the cells are being charged would be too charge to 100% occasionally even tho Tesla says the BMS rotates them already but I don't believe you would have too charge to 100% in order to find out the accurate range if that were true. Now lately they say to charge to 90% because this allows the BMS to rotate the uncharged cells better apparently allowing the uncharged cells to be charged on your next charge. So basically you could get an accurate range by doing 90% charges and can do 100% charge occasionally just to make sure that all the cells are being balanced and let you to see exactly how much battery degradation has actually occurred. When doing 100% it is best if you do not leave it at a 100% for a prolonged time. This is true especially if it was really a true 100% charge however it is not and is closer to 95%. Just like Apple cuts the battery short of a 100% charge with their cell phones (99% is max Apple allows cell phones to be charged) Tesla has their BMS do the same, preventing the battery from ever reaching 100% on full charge and keeps it from going to 0%, even when it dies. Also there have been several owners who only charged to 80% for long periods of time or the entire time before deciding to charge too 100% in order to raise the range so it could be accurate, with no success in adding any mileage by doing so. This makes me think that if you do not charge too 100% charge on occasion then you will lose more range than those that do. There is one owner who charged his model s to 100% every time and after 100k miles he had 5% degradation compared to 12% degradation that Tesla has stated is the average after 100K miles. So he had 7% more range (5% loss) than what Tesla said would be considered average (12% loss) after 100K miles.
So the BMS is not a perfect system that needs to be basically re-calibrated every once in a while with a full charge in order to get a accurate reading on your range. Also common sense should tell you why Tesla really doesn't want you too charge to a 100%. If you have a performance model s with ludicrous than charging to 100% is going to allow you to pull the max amps/kw (In ludicrous + or ludicrous max battery) which in turn can cause battery damage leading to a replacement. Most of us who bought a performance model s did so because we wanted a car that had the ability to accelerate faster than almost any exotic car. So we want to have are car in ludicrous all the time otherwise we would have just got one without. So knowing that this is when the (100% SOC) battery can have the most damaged caused I would assume Tesla knows that. So obviously they don't want you to be ruining batteries that they will have to pay for under their warranty! So they would want to deter owners from doing this which would be done by telling you that charging to 100% will cause the most battery degradation. Which isn't true based on data from owners who have been ( charging to 100% ) in posts on here and other forums. What it can cause is for the battery to have some type of failure ( ie; overheating from excessive power from max battery/ludicrous +) that would in turn effect the performance of the battery as far as kw/hp but did not effect range in my case. My range was still around 268-269 but the battery suffered a huge loss of performance (440-450kw) which is covered under their warranty opposed to battery degradation which is not. So assuming Tesla isn't being completely honest which they have never done before LMAO, I would not believe everything they say especially in regards to charging their batteries. They clearly don't mind hearing how much battery degradation any owner is experiencing because they do not have to cover that under warranty especially since they can decide what is too much and what is not. However they cannot dispute the fact when performance is lost(kw/hp), as that is covered under warranty, all they can do is try to prevent you from causing such damage in the first place. Also if you do receive a new battery chances are it will be a better newer battery than what you previously had or even might be a higher battery, ie; getting a 90 instead of an 85 or 100 instead of a 90 which is what I almost got. Tesla stopped making all batteries besides the 100 and 75 so chances are you will end up with a higher battery that will be regulated by the software. So when it comes to the 100 battery we can look at the chart and see how much better it is at getting high kw/hp even when not charged at a 100%.
So instead of believing everything Tesla employees say (Jeffrey Dahns) I like to have some common sense and remember that Tesla has already been caught lying more so than not.The WHOLE reason of this entire POST is about them completely misleading and lying to buyers about the 2015-2016 P90DL battery. For example they also did a software update which basically limited all ludicrous batteries from pulling the amps/kw they once could. However they got caught doing this and had to change it back and even admit to performing the update that intentionally limited the power of all performance ludicrous model's s and x, saying that it was causing battery damage as their reasoning to the update. So I cannot believe what one of their employees is telling me to do without questioning their reasons, when their primary concern is not me but their company first and foremost.
So with having experience of trying these different charging ideas and experiencing almost no loss of range in my first battery. At 18k miles I had 1-2 miles of range lost (268-269 instead of 270). Now I have a new battery that has just been balanced from 270 to 272 miles of range. Also I am always driving in ludicrous, not max power always, but in ludicrous always. Only time I am not is when I am traveling anywhere that I have to stop more than once too charge. So what I due for my charging is too charge at 27-30 amps keeping it at 50% to 90% and than letting it drop to around 60 miles and charging to 100% every few weeks. If I end up needing a new battery again well guess what? It will most likely be a 100 battery which means I will be able to get much higher kw/hp at much lower SOC. I will also be able to charge to 100% SOC with no negative effects since it's a 100 battery instead of a 90. In the pics below you will see that a V2 can reach a max kw of about 495kw (501kw was highest recorded) and the V3 can get above 500kw consistently and I believe the highest I ever saw recorded was close to 530kw. I got mine up too 520kw right after the new V3 battery was installed, (part #1088792-00-A) I proceeded to charge to 100% and had it tested thru a vbox. I also have the power tools app which isn't 100% accurate but is still very good tool to see what kw you are getting. The highest mine showed on the power tools app was 509kw. I didn't do launch mode however just max power when I used my power tools app to get 509kw. The other V3 battery is part #1088790-00-A and hasn't been able to get as high of kw as the latter V3 battery. In the pic that shows the graph with 100 battery you can see that the 100 battery is capable of getting much higher kw even at a low SOC compared to the 90 battery. Which is why I was hoping to get a 100 battery instead that would have been limited by the software to a 90 battery but would still have the same performance capabilities as a 100 battery in regards to producing high kw even a 50% SOC. At first they told me I was getting a 100 battery but then said they happened to find a new V3 battery instead at the last minute.
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