Let's hope the BMS continues to recover missing miles. I just noticed that the TeslaFi data uses inconsistently spaced X-axis increments. Makes the graph hard to interpret, as sudden drops can appear gradual and gradual drops can appear sudden.
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Range Loss Over Time, What Can Be Expected, Efficiency, How to Maintain Battery Health
- Thread starter KK_RedM3
- Start date
ambudriver03
Member
Did your purchase your car after the revised epa numbers came out? (do you have a 2020 VIN #)
I purchased a stealth performance because it had 18" rims and was more efficient... I don't need the EPA or Tesla to make it show up on the dashboard to know its true.
My Model 3 has 8,600 miles and is a year old. But the revised EPA mileage numbers apply to all DM LR Model 3's.
coconutboy84
Member
How about trying to drive the car and see how far it goes before complaining?
The change to the website is unclear
could be a future update is coming and we will get a range boost
Could be 2020 cars are more efficient due to some change so you will stay at 310 as will I
Could be just the website changed to match new EPA testing to sell more cars, maybe they will adjust the meter in the car maybe they won’t but in this case the cars actual range will not change
since you don’t own a 2020 I cannot see why you are upset
could be a future update is coming and we will get a range boost
Could be 2020 cars are more efficient due to some change so you will stay at 310 as will I
Could be just the website changed to match new EPA testing to sell more cars, maybe they will adjust the meter in the car maybe they won’t but in this case the cars actual range will not change
since you don’t own a 2020 I cannot see why you are upset
Incredulocious
LEAF → RAV4EV → Model 3 → Model Y
Well, I wouldn’t say nobody gets close to that:
That said, even with an average of 109% efficiency relative to rated range, that doesn’t make up for normal degradation: my max rated is down to around 285 from the original 310 rated miles after 15 months. However, that estimate does vary since the car can only calculate/guesstimate from the change in voltage readings – plus that efficiency measurement was from a couple of months ago during warm summer weather.
Knightshade
Well-Known Member
Not sure where you get that idea but it's not true.
Compare Side-by-Side
2020 is the only one with a range of 322- EPA still shows 310 for the 2018 and 2019.
The diff between 309 and 310 is not even a rounding error. Disappointing? The new EPA numbers are for the new models, 2020s. Yours came with a 2019 EPA rating. If we're patient, perhaps a software update will automagically improve your range.
My, one year and 3 day old, LR-AWD still shows 310 miles of rated range, but it can vary from as low as 287 miles to as high as 314 miles. Getting upset by tiny variations is not worth the effort.
I'm willing to bet it won't apply to older cars, and is an increase in range due to physical differences in the batteries:
From Thread by @jpr007: "TESLA PANASONIC BATTERIES - UPDATE 20191130 There have been a number of interesting developments taking place at GF1 over the last six month […]"
During this summer Tesla and Panasonic implemented a chemistry upgrade for Model 3 cells transitioning from what we may call “A” chemistry to “C” chemistry (where “B” and “D” chemistries apply to Energy Storage cells)
12. It is likely that this new chemistry reduced product costs, but we currently have no data to estimate that benefit. But the primary goal of the new chemistry was actually to improve cell performance, and we have some data to estimate that
13. About two years ago 4,416 cells of 2170 size were require to build a 75 kWh Model 3 battery pack, as illustrated by a Jack Rickard teardown of a used Model 3 in June 2018
This rates each cell at 16.98 Wh each of useable capacity
14. Today we estimate that Tesla can build a 75 kWh Model 3 battery pack with 4,067 cells
This rates each cell at 18.44 Wh each, for a +8.6% improvement in useable cell capacity
So quite literally the car can fit more capacity in the same space, should Tesla desire to do so. And it seems very likely Tesla will continue to make Model 3 have longer and longer range, just as they have done in the past with Model S.12. It is likely that this new chemistry reduced product costs, but we currently have no data to estimate that benefit. But the primary goal of the new chemistry was actually to improve cell performance, and we have some data to estimate that
13. About two years ago 4,416 cells of 2170 size were require to build a 75 kWh Model 3 battery pack, as illustrated by a Jack Rickard teardown of a used Model 3 in June 2018
This rates each cell at 16.98 Wh each of useable capacity
14. Today we estimate that Tesla can build a 75 kWh Model 3 battery pack with 4,067 cells
This rates each cell at 18.44 Wh each, for a +8.6% improvement in useable cell capacity
AlanSubie4Life
Efficiency Obsessed Member
This is interesting, but want to point out that the 2018 EPA test document showed that they were able to draw 79.2kWh from the AWD Model 3 on April 8th, 2018.
That was with a battery using a 46p96s configuration of 4416 cells, which works out to 17.93Wh of usable capacity per cell.
I wasn't quite able to follow where the article you linked to got 18.44Wh for the new cells, but in any case, that would be only a 2.8% improvement if that number is actually true. FWIW.
It'll be interesting to see the new EPA submissions...if they provide the same level of detail, that will give us the answer on this.
Note also that assuming the exact same test was conducted, the EFFICIENCY has improved on the 2020 models (by 4.3%), so the same size pack will produce more range (pretty much proportional to the range improvement of 3.9%). So, I'd be a bit surprised if we see significantly more energy being drawn from the pack. Though, it is possible - as an efficiency improvement could also be gained from an improvement in charging efficiency which would have no impact on range.
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I don't think a change is battery composition had anything to do with it.
https://electrek.co/2019/11/01/tesla-model-3-long-range-increases-range-price/
https://electrek.co/2019/11/01/tesla-model-3-long-range-increases-range-price/
Well you are still better than me.My year old LR AWD shoes about 289 miles at 100% even after a few 100% charges to recalibrate.
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