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Battery concern on my 90d

Battery concern on my 90d

Hello everyone,

I am new to the Tesla forum family. Please don't hang me out to dry if this topic has already been discussed as I cannot seem to find a search option and the forum. I have a 2016 facelift model S that was manufactured on November 26 of 2016.I have concerns over the range of the car. Right now I have 55000 miles and at a 95% charge it saying I am only rated to 256 miles. I know when new the car should have been rated somewhere just over 300 miles range. So my question is should I be concerned about the life of my battery and/or is it failing?

alikitchell | January 20, 2020

wow , same here . I just bought a p90d cop from Tesla and by calculations, I get 110 miles to a 90 percent charge.
I just had a full 90 percent charge. 222 miles at start. drove 79 miles and showed 63 miles remaining. burned through 159 miles of range , driving actual 79 . about half of what it says. so 222 miles is really 111? granted its 18 degrees in stl . had the heat set to 75 and one seat heater on max. prewarmed the car on a charger . 111 miles is crappy . glad I kept my other car. still love this car for other reasons .

Aerodyne | January 20, 2020

90D new, 100% charge gives 294 miles rated range. Not sure where you get over 300 mile RR. The 90s do degrade faster at first than the 85s. My calcs show you lost about 8%, I would not worry about that....

Aerodyne | January 20, 2020

90D new, 100% charge gives 294 miles rated range. Not sure where you get over 300 mile RR. The 90s do degrade faster at first than the 85s. My calcs show you lost about 8%, I would not worry about that....

murphyS90D | January 20, 2020

A pre-refresh S90D was rated at 288 miles. A refresh S90D was rated at 294 miles. I don’t know the numbers for the P version but they are less than those figures. Those are EPA ratings which means no heat or air conditioning and speed less than 60 mph I think. Cold weather reduces the efficiency of the battery. My S90D dropped from 288 to 277 over the 4 years since I got it. I am on my second battery. At 920 miles on the odometer a 100% charge dropped to 100 miles. They didn’t tell me what failed in the battery but something definitely failed.

jordanrichard | January 21, 2020

No, the rated range is based on a speed of 65 mph. Tesla has since changed their website, but for the longest time, one could enter different speeds, outside temperatures, AC on or off, to see what one's range would get. The starting speed was 65 mph and the stated range matched the EPA number.

TonyB.C120 | January 23, 2020

We purchased a 2016 (Feb., pre-facelift) 90D in November. We charge to 85% and it usually shows 245 miles range. However, our actual range is always lower because the EPA 294 mile range is based on dynamometer tests at a low speed at ideal temperature. In cold weather, range really drops off. See https://teslike.com/range/ for more info.

TeslaTap.com | January 23, 2020

@TonyBm - There are two versions of EPA test - the 2-cycle, which is what you describe. The rating is lowered by 30% to compensate for heat/cold conditions, although it's an average, so cold weather will be worse.

The 5-cycle test is done with both cold and heat and should be close to the 2-cycle test results after the 2-cycle is adjusted. I don't know which test Tesla uses, as it is up to the manufacturer. I suspect the 5-cycle test is used as the old 2-cycle test is considered somewhat obsolete, but is still allowed.

Generally, you should get the EPA range at 65 mph, 70F, on the flat when new, with the 19" tires (non-performance). The 21" tires are included in the Performance S and are one reason EPA range is lower for Performance variants.

Also, the battery degradation tends to be the most in the first year - perhaps 2% or so. After that, it seems to only have 1% or so degradation per year, at 12K miles/year. I'm sure there are other variables that make this hard to apply to everyone, including how you charge, driving habits and temperatures you encounter.

TeslaTap.com | January 23, 2020

If you don't do a range calibration, then estimating from 85% or 90% SOC is not going to be accurate. The cars purposely drift downward over time as the range is only a calculation. This is a conservative approach so that it reports less range than you actually have over time.

To calibrate, run the car down below 20%, then charge up to 100% at home. Check the range within an hour of getting to 100%. This should show you the true range at which you can find the degradation from the original. Some say you should do this process 2 or 3 times, but once it should get you very close to the correct calibration.

murphyS90D | January 23, 2020

A prerefresh S90D was rated at 288 miles not 294. 288 times 0.85 = 244.8. You have lost nothing. Mine is down to 277.

IflyI95 | January 23, 2020

I bought my 90 brand new in 12/15, and at 100% it was 274 miles. I haven't charged it to 100% in years, but at 90% it's at 241 miles, so I'm very happy. 241 divided by 90% is 267.8, so I've lost about 6 miles of capacity in 4 years and 44,000 miles.

IflyI95 | January 23, 2020

Also, I don't remember what mine was rated at, but it's a prefreshed, straight 90, 2 wheel drive.

GoldAK47 | January 24, 2020

What sucks is, it looks like after battery replacement they also limit your power. My P85+ now has a hard limiter of 300kw.

yeemoney | January 24, 2020

I purchased my Raven MS long range (or 100D) on 9/28/19. At the time it reported 370 miles of range at 100% though I never actually charged all the way to verify. Fast forward to today (1/24/20) and the car has 10,200 miles and the max range is now 358 miles, which is 3.2% degradation. Is this expected? Furthermore, I've been trying to replicate the SF Bay Area to LA drive that MotorTrend did (https://www.motortrend.com/cars/tesla/model-s/2019/exclusive-2019-tesla-...) but sadly my MS always stops me to charge at the Super Charger once prior to the Grapevine.