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Model S90D Battery Degradation?

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I seem to be the one with the most degraaded V3 90 pack.

After 42k mi in 2 years exactly it is at 93.1%(If production day was 85,4kWh as reported) I'm reporting directly from BMS using diagnostics mode. At 79,5kWh when fully charged. After buffer 75,5kWh usable for me which is only 2-3kWh more than an 85 pack. So gap is narrowing.

Never supercharged due to where I live. Used Chademo DC chargers for approximately 4k miles. Rest is all AC. Charging to 90% daily. Previous owner for the first 24k mi charged to 100% daily and drove 200mi a day but since I got it I'm very careful about it.

What is the cell voltage at 80, 90, or 100%?
 
What kind of tires are you using? Did you put regen to low? I have a 2016 S 90D too and I have colder winters that you do. My lifetime usage is 304 Wh/Mi and dropping. I now usually get less than that even in the winter (I've learned to drive more efficiently over time).
327 Wh/mile does seem pretty high.

My numbers are closer to yours. I put 32000 miles on my S90D and averaged about 295 Wh/mile. When I sold it, it only had ~3.5% degradation and 100% was 285 miles.

Now I'm in an S100D and usually average less than 300 Wh/mile. When I first got the car, it averaged over 316 Wh/mile but I've brought down the average a bit since it became my daily driver.
 
I just bought a used S90D (Mar 2016 pre-facelift) and it displays 250 miles at 90% and at 70mph on the highway it achieves roughly that performance. I've got the same battery generation as yours. Is it possible that there is something impacting your car's efficiency?

The car has almost 46k miles on it and I have no idea how the prior owner abused it.

My 2016 S90D was $50k (purchased "used" from tesla in 2019), a 2019 eGolf is $39k, so the S is $11k (or $19k after rebates) more than an eGolf, but of course it has AWD and comfortably takes 4 people and a megaton of cargo on trips. I also drove past 2 superchargers leav the house without "filling" it first. Also the S has 1 more year of B2B warranty (and 2 years less of powertrain warranty) than the 2019 eGolf. A 2019 S is indeed quite a bit more expensive than a 2019 eGolf.

I looked around and couldn't find a better EV than the S for my needs (normal city-traffic commuting 90% of the time and family road trip machine 10% of the time). Possibly having distinct vehicles for these 2 services would make sense?

It may be that the V1 90 packs will degrade even more; hopefully that isn't the case.

I just got a November 2015 90D myself(going on 2 weeks now).

100% is about 263 miles with 90% around 233 miles. 68K miles. Couldn't beat the price and how clean it was. I seem to beat rated miles on drives but teslafi does show that a 10% drive is 7kwh of usage, so if that is the case I am at about 70Kwh in my battery and if what I have read above that 77Kwh is the normal usable amount of a "90" pack, the 10% degradation does match up with my 30 mile loss.

It's sad as I had a Volt with 130k miles and the day I traded it I got 47 miles on a 38 mile rated battery but there was nearly a 50% maintenance amount on that battery which is huge.

Overall the range loss is saddening but expected and for 43k I am loving this car.
 
I just got a November 2015 90D myself(going on 2 weeks now).

100% is about 263 miles with 90% around 233 miles. 68K miles. Couldn't beat the price and how clean it was. I seem to beat rated miles on drives but teslafi does show that a 10% drive is 7kwh of usage, so if that is the case I am at about 70Kwh in my battery and if what I have read above that 77Kwh is the normal usable amount of a "90" pack, the 10% degradation does match up with my 30 mile loss.

It's sad as I had a Volt with 130k miles and the day I traded it I got 47 miles on a 38 mile rated battery but there was nearly a 50% maintenance amount on that battery which is huge.

Overall the range loss is saddening but expected and for 43k I am loving this car.

Teslafi doesn't take data from BMS. You need to calibrate it from settings for your actual consumption. See how much % more or less it shows your consumption on average and change it in settings. You should also have 75-76kWh or usable net energy @100% like I do even though mine is rev3 90D pack built in 03/17.
 
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Unfortunately there is no list of acceptable degradation on the warranty so if it keeps loosing 5% a year I will get no assistance. My problem might be that I have to charge 100% many times because in the cold weather and in order to get to my destination and back I have no other choice. I make frequent 70 mile trips and I barely make it back sometimes with less than 10%. Seems in the cold and with highway driving around 70mph actual miles is around 35% less than listed.

Given it's best to not leave it below 10% or at 100% for very long try at least to make sure you start your charging session to finish just before you leave (at 100%), and plug in as soon as you get home so as not to leave it at a low state for a long time - at least the S doesn't brick like the Roadster did when left at a low state! Try and keep it in the 20-80% range at all other times.
Sure you know the following but just in case... drive slower as optimum speed is about 20mph (wind resistance is a square of the speed) and use heated seats/steering wheel instead of cabin heating, pre-heating when setting off to maximise distance. Check tyres aren't under-inflated.
 
What is the cell voltage at 80, 90, or 100%?

Today at 90% it was showing 381km/236mi. However charging finished notification showed 383 so 2km phantom loss between end of charge and me leaving worked.

I turned diag mode while leaving. Cell voltage was 4.095V. Full pack capacity is down to 79,3kWh (so 75,3 after the alleged buffer) Mar 2017 built AP2 90D running 2019.20.4.2 if anyone cares.

I think in just 2 years and a few months of driving with AC charging mostly, 7.2% degradation is big. I was expecting 5% tops for the first 3 years. It sucks to just have 1-2kWh more if any than a 5 year old P85D on same mileage even with a later built 90D.
 
Today at 90% it was showing 381km/236mi. However charging finished notification showed 383 so 2km phantom loss between end of charge and me leaving worked.

I turned diag mode while leaving. Cell voltage was 4.095V. Full pack capacity is down to 79,3kWh (so 75,3 after the alleged buffer) Mar 2017 built AP2 90D running 2019.20.4.2 if anyone cares.

I think in just 2 years and a few months of driving with AC charging mostly, 7.2% degradation is big. I was expecting 5% tops for the first 3 years.

At least in your case it's real degradation and not software capped like other 85s are seeing. 4.095 volts is a true 90% SOC.
 
2016 pre-refresh 90D with v1 battery
at 3year + 3months 100% charge=~443km,last winter ~437km
real world summer driving range: at 115kmh will get ~400km, at 80-90km will get ~450km
usually home charge to 80%, 100% only before a long trip, 20 supercharging "sessions" that typically go form 10 to 50% or 20 to 60or70%
peak supercharge rate >110kW between 20-~50% before 2019.20 update
 
What is the cell voltage at 80, 90, or 100%?

Had the chance to do 100% last weekend before a roadtrip. Measured again at 100% when AC was off and car was in P (even though contactors are closed they're under almost no load) it was 4.17V. Down to 79,3kWh now.

Quite disappointing. If you drive without ever stopping for a break and without letting contactors open you get around 76kWh out of it. If you park for short breaks you get down to 72kWh-ish. If you park overnight you get 65-70kWh depending on your vampire drain. So 90 and 85 packs are officially 400V-16 module 75 packs. I wonder how 75 packs are holding.
 
This thread has been an amazing source of info. Thanks for all of the great additions.

What brought me here is that I 100% charged my refresh S90D on Friday and noticed my 100% was 454km down from 470 when I first got the car (CPO with 22k km on it). I now have 80k km.

I charge to 90% regularly but not nightly because I wait until it gets to 50-60% before I charge (no rhyme or reason as to why I do it that way). When I got the car my 90% was 420-421km. Today it is about 409-410...but here is the thing, on some occasions my 90% has been as low as 404km and then a few days later, it will be 412 (and I am not touching the “set charging limit” button).

Any benefit to decreasing the Amps when I charge at home???

(BTW - charged to 100% maybe 5 times and drove it right away each time, been below 20% once and I Supercharge about 10-15 times per year).
 
So In addition to fixing the sketch pad app, update 2019.24.4 no longer displays expected mileage/km range next to the battery symbol in the upper (binacle) display above the steering wheel.

Even if you select show range rather that energy in the Displays section in the console.

It looks like Tesla decided to make it more difficult for users to understand the range loss affecting our vehicles rather than fix the root cause issue.

Really feeling Tesla’s love and support right now... not!
 
I wonder how 75 packs are holding.

75D X, July 2017 build date.

x2 runs in roughly 24hrs so some vampire drain, but 100-0% would be about 67kWh usable. Brand new max I managed to pull out of the pack was 69kWh on a single run, so about 2-3% degredation.

Still given the stuff now happening around software caps limiting older 85kWh cars to just 65kWh usable this all might be academic.....

48395618882_571b32fa2c_k_d.jpg
 
75D X, July 2017 build date.

x2 runs in roughly 24hrs so some vampire drain, but 100-0% would be about 67kWh usable. Brand new max I managed to pull out of the pack was 69kWh on a single run, so about 2-3% degredation.

Still given the stuff now happening around software caps limiting older 85kWh cars to just 65kWh usable this all might be academic.....

48395618882_571b32fa2c_k_d.jpg

Some cars have seen sudden sharp drops in range after a diagnostic installed with a recent update, but only a relative few cars have seen big drops. The original 85KWH pack was really about 81 KWH and few are limited to anywhere near 65 KWH now. Most have seen an average 5% degradation.
 
Here's how mine is holding up. Facelift March 2107 built 90D. Very weird, I'll almost cruise above 10% degradation.

Old owner drove the first 27k miles doing 100% daily as he needed the range. He justified it by slow AC charging it daily. Despite the abuse when I was buying loss was at 4.4%.

Ever since I bought it I roughly did 28k miles with only charging up to 85% daily. Only 5-6 roadtrips with DC charging and I don't live in a colder climate, but it seems it has lost more with me. It doesn't make any sense.

Now in a real world condition (4 season average) I can only go 180-200miles between fast charging. That might be OK if you have fast chargers every 50 miles or so but that's not the case for me yet. I've got 73kWh usable energy if I leave with 100% and never park until I deplete the battery. If I park a few hours without charging, meaning battery gets to an Open Circuit, it doesn't even do that. Maybe 68kWh usable. It really is amazing how Tesla is getting away with calling these cars "90".
 

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Here's how mine is holding up. Facelift March 2107 built 90D. Very weird, I'll almost cruise above 10% degradation.

Old owner drove the first 27k miles doing 100% daily as he needed the range. He justified it by slow AC charging it daily. Despite the abuse when I was buying loss was at 4.4%.

Ever since I bought it I roughly did 28k miles with only charging up to 85% daily. Only 5-6 roadtrips with DC charging and I don't live in a colder climate, but it seems it has lost more with me. It doesn't make any sense.

Now in a real world condition (4 season average) I can only go 180-200miles between fast charging. That might be OK if you have fast chargers every 50 miles or so but that's not the case for me yet. I've got 73kWh usable energy if I leave with 100% and never park until I deplete the battery. If I park a few hours without charging, meaning battery gets to an Open Circuit, it doesn't even do that. Maybe 68kWh usable. It really is amazing how Tesla is getting away with calling these cars "90".
My early 2016 S 90D has this same problem. Total available battery capacity 72-73 kwh and 200-220 miles actual range. And this has been true from when I bought the car with 7,500 miles on it. The thing that should interest all owners is that full charge range still displays a like-new value of 275 miles. That is, the full charge range display conceals rather than reveals battery degradation.
 
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75D X, July 2017 build date.

x2 runs in roughly 24hrs so some vampire drain, but 100-0% would be about 67kWh usable. Brand new max I managed to pull out of the pack was 69kWh on a single run, so about 2-3% degredation.

Still given the stuff now happening around software caps limiting older 85kWh cars to just 65kWh usable this all might be academic.....

48395618882_571b32fa2c_k_d.jpg
This display reveals that 67% of your battery capacity (74 minus 7) had 44.8 kwh and provided 138 miles. Therefore the total usable capacity of your battery is 66.9 kwh (44.8 divided by 0.67). And your full charge range is 206 miles. This may not be too bad for a nominal 75 kwh battery.
My 2016 S 90D has a worse problem (72-73 kwh of usable range). And the full charge range still shows 280 miles as if the car were new. So all those owners who claim that their battery has had very little battery degradation because their full charge range is only slightly diminished might be falsely assuming that the display of full charge range is correct.