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Because calendar aging is the issue, your aim is to maximize the amount of time spent at lower SOC (55% or below) while still having plenty of range for unplanned errands or emergencies. What I would suggest is to schedule your charge such that you leave for work with 70%-80% and arrive home...

I just wanted to add that I remembered (and posted here back in 2017) a similar incident when my car was less than one year old. I parked and lost about 5% over two hours. I'm guessing the BMS gets better readings as the battery cools and settles without load. So maybe this is typical...

Had a similar issue just today. Got home with 18%. Waited 3 hours before charging at it was at 11%. About 60 F in my garage. Hooked up SMT and took some readings in case they may become useful. I had 2 modules with around 18 mV cell imbalance, but don't know what to make that. Nominal remaining...

I owe you an apology. It's 318 wh/mi. I took a trip today and caught it dead on.

I'm addressing charging, not discharging. Most batteries can discharge at much lower temps than they can charge.

This is very useful for EVs sold today with this chemistry. The obvious next question is what's primary cause of the degradation over time? I would be surprised if this hasn't already been identified and addressed at the lab stage. Here's one article about a "million mile battery"...

I pulled a few spec sheets, but haven't gotten hard numbers on minimum charge temp. Onc says the electrolyte freezes at -60F. It seems that the lead acid battery can freeze if discharged, so it's important to keep it topped up. Maybe charging in -20F or -30F is OK as long as it stays topped...

https://batteryuniversity.com/article/bu-410-charging-at-high-and-low-temperatures https://blog.epectec.com/battery-charging-and-discharging-at-high-and-low-temperatures This reference shows it can be charged at -40C. If that's true, this isn't an issue at all...

If you look at an LFP voltage graph, you'll see that it's very flat. Because of this, the BMS can't accurately determine the SOC from the resting voltage through most SOC states, but it can determine when you reach 100% SOC, where the voltage rises steeply. After a 100% charge the BMS measures...

I looked at the abstract and found this part interesting. Later on: and in the conclusion: So it sounds like he developed a way to measure the activity of the silicon in the anode using hysteresis measurements and it was the primary culprit for the low SOC cycle degradation. The batteries...

Thanks for the response. 310 is rated efficiency for the S P90D as determined when I got it in 2016. I've "driven over the line" hundreds of times over the last 8 years and it definitely crosses at 310. I hooked up SMT and confirmed the 74 kWh (73.7 now) nominal and 4 kWh buffer. Gotta love...

Just for fun, I took corresponding photos: .307 kWh/mi x 176 miles / .72 = 75 kWh If I changed display to rated miles, it says 170 miles. .310 kWh/mi * 170 miles / .72 = 73 kWh The difference might be due to rounding errors. 72% could be 71.5% or 72.4%. 170 miles could be 169.5 miles or...

The rate Not at all. Please don't read something that's not there. I planned for 20% degradation when I purchased the car and I have 2 others newer ones. The OP was about calendar aging, but this has turned into reported capacity and range calculations.

I wouldn't be surprised to find that at all and most users report this. I don't think using this figure while driving is an accurate way to measure energy usage. There is too much variation in power, fluctuating temperatures, switching between regen, auxiliary systems, etc. The BMS is doing...

Even though the EPA tests use full depletion doesn't mean Tesla uses that figure in the calculations. You say they do - do you have a link? If that were true (74 kWh used being below 0% into buffer), the calculations at different SOC would not work out as they do. This doesn't appear to be...

So I've posted this twice, but I'll post it again. "74 kWh * 75% charge / 310 wh/mi = 179 miles, which is what my BMS reports as my range at 75% charge". The BMS thinks I have 74 kWH based on the rated range. That's not a total. It's the usable capacity based on rated range. This is as...

81.8 kWh is from here.

Tessie reports 9.7% degradation. 81.8 new vs 74 now - neither of these is total. I'm certain 74kWh is the usable capacity. Again, my P90DL efficiency used for range calculations is 310 wh/mi. 74 kWh * 75% charge / 310 wh/mi = 179 miles, which is what my BMS reports as my range at 75% charge...

This is fascinating, but I'm wondering if #1. These results have been independently reproduced and #2. How were temps measured? Tesla BMS uses active cooling with cooling tubes? physically contacting cells. If the experiment uses passive cooling and temps are ambient, cell temps might be much...

Currently using Tessie, but I got 75 in TM--spy previously as well as original 81.8 using OBD2. My 75% rated range is 180 miles, which matches the 310 wh/mi rating. So this is the capacity the BMS reports.

It would be a good idea to consider degradation from real usage. For instance, my 2016 P90DL has a usable capacity of 74 kWh. It was 81.8 new. That's roughly 10% degradation over 90k miles and nearly 8 years. I charged to 90% the first year in a hot climate and 80% since then. According to this...

The recent discussions about EVs in the cold got me wondering. With Lead Acid having a minimum charge temperature of -20C (-4F), will temperatures below this sustained simply drain the 12V battery? I'm assuming the 12V battery is exposed to ambient temps and can't be heated using the car's...

I have a 2022 3LR, 2023 3P, and 2016 S P90DL. Both 3s got the 80% daily update. The 2016 S did not.

Same as any performance summer tire. Maybe 20k.

Love these, but just switched to PS4 AS for winter. The PS4 is an amazing summer tire, but dangerous below freezing. It is an acoustic version. My wh/mi through summer was 290, which is really good for a P90DL rates at 310.

From a trip to and from the Atlanta International Airport today I averaged 264 wh/mi. It was 90 F outside. A/C was set to 73 and I drove a good portion 70-80 mph. Again, this is a 2016 P90DL on the 245 19" PS4 tires with acoustic foam AO (Audi OEM). I've run the all season version of this...

Michelin Pilot Sport 4 (Acoustic) for the win. I've averaged 290 wh/mile in my S P90DL since April (about 3k miles)! That includes a mix of 75mph hwy, curvy hilly roads and stop and go in town. I was running AS 3+ then PS4 AS year round. I thought the busy tread pattern of the AS might be...

Happened to me today. Got 2020.32.3 update yesterday on my 2016 P90D S. Drove once and parked. When I returned an hour later MCU was frozen and driver display had “Center display unavailable” and couldn't drive. MCU reset took longer than normal and everything worked afterwards, but “Center...

Still trying to get some specs on the new part, 1067361-77-C. The best subjective test I can do is using a speed bump. The front, with the new air springs, travels more and is "bouncy", while the back is firm with less travel. I'm wondering if the adaptive air spring module replacement...

It's interesting that we have different experiences. I wonder if our cars had the same air springs to begin with. Also, it would be helpful to have specs to compare. My searches came up empty. Mine being built in early 2016, did Tesla change specs through the years or use different components...

Update: The new part, 1067361-77-C, is much softer than what came on my P90DL. The suspension in the front is now very cushy, almost Cadillac like, while the rear is still stiff. It's nice while on bumpy roads, but I didn't know fixing the rattle would change the suspension stiffness and I'm...

I got the 1067361-77-C replacements on my P90DL and so far (500 miles) I haven't heard any rattling. I've had the rattling for the past 3 years, so it's a pleasant change. They do feel different though. Maybe a bit softer. Does anyone know if the spring rate is different for this new part...

I had the same rattle when my car was new. Best replicated at low speeds on slightly broken surfaces. It was fixed at my first annual inspection by replacing an air suspension component. I've heard the same rattle on 2 loaners including a Model S 100D brand new and right off the truck. My...

Agreed. I pull out onto a road with brisk traffic that is within the geo-location radius of my driveway. I set the air suspension to high for the driveway so it's on high at this intersection. If I manually lower the suspension at this intersection, I have to remember to raise it again for my...

For a "winter" set, I went with the TST 19" matte black and stock size "245/45R19" Michelin AS/3+ tires. These tires are ultra high performance all-season with really good dry/wet traction and good snow/ice ratings for an all-season. I like the matte black because it matches the tire color...

Thanks. I just tested it out. I'm seeing all 96 bricks registering a voltage, so that's a good start.

Thanks Sorka. I do have it turned on though I don't expect it to pull much power. It wouldn't even need to activate the compressor as it could just pull in fresh air. If that was it, it would mean I had 2 issues (possibly 3). 1. overheat protection pulling 1.5kW 2. Charge controller not...

Just the standard Tesla app. Though I can't imagine it (or any app) pulling 1.5 kW :)

I recently took a 200 mile trip with a 30 minute charge and 2 hour stop in between. I began by charging to 100% SOC and leaving immediately. My first stop was at an 80 amp charger, where I charged for 30 minutes from around 30% about 36% SOC. I drove to next destination and parked with a 32%...

What's your air suspension height? Mine did this while on high, but not on normal. SC replaced half shaft. I thought it was happening, while "cold", but it was geolocation air suspension for my driveway. When I left "cold", air suspension was on high.

Yesterday it warmed up (high of 85 F), and I got 309 wh/m mostly on the highway between 70 and 75 mph with a few quick overtakes and one pit stop. I was initially a little concerned about this tire not being LRR, but I can live with those numbers if they hold. About half way through the trip...

The A/S 3+ has relatively good (7.9 good) snow and ice ratings on tirerack compared to the A/S 3 (4.8 fair).

A few data points on the A/S 3+. I took a round trip on the interstate about 207 miles total. Took the first leg pre-warmed. Parked all day and returned. Trip 1: 30F-36F, 70 mph, 350wh/m Trip 2 (return): 65F-50F, 70 mph, 326 wh/m Extra info: Arrived with 53%. Moved vehicle once to...

The Pirelli CINTURATO P7 is a high performance summer tire, whereas the A/S 3+ is an all season (high performance) tire. In my case, I'm perfectly happy with the PSS summer tires that came with the car, but needed an all season tire for the winter months that dip into the 30s often enough. The...

@AmpedRealtor Are you saying the A/S 3 (all season) is 5% higher than the PS2 (a summer tire)? I would expect the summer tire to have lower efficiency than the all season.

@sorka I've got the A/S 3+ on TSportline TST 19", using for a "winter" tire down south in place of the factory 21" with PSS. The ride and performance is really good, but I'm still gauging the efficiency. I figured they shouldn't be worse than the PSS efficiency wise. I'd be interested to...

Are you using the Pirelli P Zero? I really like the Michelin PSS, which I have on the 21's now. I'm interested in the TST 20" wheels, but I'm hesitant about switching from the PSS as well as going to a 275 width. Do you have any comparisons on performance and energy usage? You say it's quiet...

I've heard a faint "whine" recently at low speeds definitely on regen, but possibly off regen too. It sounds to me like gear noise/whine. I'll try to get a recording of the sound and post it. I have about 8,000 miles on the car with mixed driving.

Yes, it is a refresh. Battery Part # ends with 00-C

OD: 7,800 WH/Mile: 339 Lifetime 90% Rated Range: 247 100% Rated Range: 275 WHEEL SIZE: Staggered 21 Ludicrous: Yes Tires: Michelin PSS @ 40 psi I live in MS and received my P90DL in late May. When delivered, it registered 282 miles @100% and 254 @90% rated miles. Immediately following a...