-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
Estimate range on full charge dropped to 300 miles
- Thread starter Pebbles
- Start date
It is the same as with the quantities of vitamins sometimes being listed with the measurements in IU (international units). It is a fixed, exact conversion from milligrams or micrograms according to a conversion factor constant. So it is an exact unit representation. 1 rated mile for a model of vehicle does equal an exact number of joules.
That (326) is a representation of how much total energy there is, which due to manufacturing variability, they cannot guarantee exactly how much there will be in anyone's specific battery. People's batteries will have varying number of joules/"rated miles" in total. Therefore that total amount is an estimate. But the unit that is called a "rated mile" is not.
sleepydoc
Well-Known Member
First, as near as I can tell, the only source for the claim that this is a fixed conversion is your posts on this thread.
Second, if it actually is a fixed conversion, the battery capacity is an estimate and variable, meaning it's a conversion from an estimate and making it an estimate by default.
Third, displaying a percentage as a distance is deceiving and inaccurate at best.
But finally, just to put this to rest, I will quote the owner's manual:
Pg 56:
Pg 58:
Pg 68:
Pg. 123:
Attachments
sleepydoc
Well-Known Member
Just to get back to the original question, page 67 of the owner's manual has the following statement:
I'd be very careful with all that drafting - those trucks have taken out many a windshield. I avoid being behind trucks of any kind. Thoughts from a fellow AF retireeNope, I departed Louisville for Mt Vernon at 97% (I misspoke when I said I departed Mt Vernon) it was the other way around. I drafted a big truck for the first 25 or 30 minutes to get my wh/mi down with TACC set to 72 mph (posted is 70) and ducked in/out of the left lane to pass slower cars as necessary. My arrival SoC started off at 11% but kept climbing due to judicious drafting and construction along that portion of I-64. But in the end, my average speed was just at 63 mph with the results as posted. My screen shows temp as well. And I wasn't running my Aero Caps but tire PSI was at 43 psi sometimes 44 psi.
(and soon to be civil service retiree!)
ArabianOak
Member
My MYP is 280 for 100 percent charge. Should be 300. I just click the estimated range icon and change it to percentage...then it doesnt bother me...lol
Wow, that is pretty crazy that our cars are essentially the same age, mileage and range. Does it concern you at all it only shows 281 at full charge?
Huh--well, maybe someone else can help you find that. This has been known for many years.
All of your citations are pointing out that trying to figure out the amount of energy in the battery is an estimate. Of course it is. I repeatedly pointed that out to you. It would be an estimated amount of joules too. But that was not your point. You were staying that the unit of joules was exact, but a rated mile wasn't. That is still simply false.
meyerat93
Member
TomServo
Active Member
If that mileage info isn’t very accurate why does Tesla display it. Wouldn’t it make more sense to pull that number from the Energy app?
sleepydoc
Well-Known Member
No, my entire point is that a 'rated mile' may be a specific number, but that specific number is nothing more than an estimate. You seem to be unable to understand the difference between the number itself and what it represents. But I tire of explaining this nuance so I'll let you go on believing.
I think you'll find over time that we spend way too much time stressing out about range. As others have noted, there are a bunch of other threads on this same topic - it helps to do a search before you post a topic here, just FYI. Realistically, are you going to jump in and drive 300 miles (or over 4 hours) in one fell swoop? Most people don't. Personally, I'm good for about 2.5 before I need a bio/stretch break. So I stop when either the car, or my bladder, says to, and charge up. I've come to the conclusion that range is overrated, but what's important is availability of chargers and charging speed when road tripping.
BTW, I have no idea what my 'estimated range' is at 100% as I've never charged it to that level. 95% has been my max for a road trip, 80% for daily use.
alexcue
Member
I'm at 297 @ 11,747 miles MYLR roughly 11 months down the line. I don't baby it, but just try to keep up with traffic.
iamnid
Active Member
It isn't worth worrying over the number. It varies wildly based on the BMS. If you only use 10% and then top off every day, the BMS has trouble accurately guessing how much charge/miles you have. In our model 3 I've seen it vary as much as 20 miles in a week just based on how we've been charging. A long trip with a good deep discharge and then top off and then deep discharge seems to allow the BMS to more accurately gauge how many miles the pack has. The battery is made up of thousands of cells which the BMS has to regulate, it's not surprising that the BMS can't always accurately let you know how many miles are left, especially when you are just using 10-20% before a top off... It doesn't know how much is left in the pack if it never sees the bottom portion of the charge. The important thing to note is that this estimate is most likely not any type of battery degradation at this point in your car's life.
Similar threads
- Locked
