MASTER THREAD: 2021 Model 3 - Charge data, battery discussion etc

[TimothyHW3]

What’s the best way to check the battery size? Deliveries in USA have started and User @Stan930 picked up Model 3 LR today and is willing to check the size. Please guide. Thanks!

@Stan930 can, for starters report the 100% on display. Next step will be to get this

All You Need to Know about the Tesla Model 3 & Y Diagnostic Tools and Apps

The Tesla Model 3 and Model Y are not equipped with a standard OBD2 port. Instead, a console connector is available at the back seat of the vehicle, wherein you can plug-in an OBD2 tool or device using a Tesla OBD2 adapter.

ohptools.com

This

scan my tesla - Apps on Google Play

* This app needs an adapter cable and a bluetooth OBD2 adapter to work *

play.google.com

IOS also available, but Android better.

And a BT OBD2 Adapter like this one or other

Amazon.com: OBDLink MX+ OBD2 Bluetooth Scanner for iPhone, Android, and Windows: Automotive

Buy OBDLink MX+ OBD2 Bluetooth Scanner for iPhone, Android, and Windows: Code Readers & Scan Tools - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

 

[devarakonda]

Thank you @eivissa and @TimothyHW3. Waiting for @Stan930 to check and report us back when gets a chance.

 

[Stan930]

Ordered the dongle this morning Priority.

 

[AAKEE]

I did my charging session tonight.
Arrived to a SuC V3 with 10%, charged up 73kWh, Nominal Full Pack climbed to 81.6kWh, and the nominal remaining reached 82.0. Still ”charged” with 2kW when I stopped(didnt have the time to wait), but I dont think it would hit 82.1 if I had waited.
Most of it on gopro( until menory card got full) and SMT recorded in the phone.
I will combine these to a quicker video.

 

[AAKEE]

Hi,

Today I spent some time with the Supercharger to measure the battery capacity on my Performance 2021, it takes a long time to go up to 100% and then I waited at least 20 or 30 minutes for the end of balancing cells. here are the results

I made the measurements on the 3 distances of the consumer screen, 10, 25 and 50 km to be able to make an average.

318x253/1 = 80454 Wh

239x337/1 = 80543 Wh

207*389/1 = 80523 Wh

At 100% : 507 Km

So I have an average capacity of 80.5 kWh for 507 km, which is very close or even identical to what is expected. Fortunately for a car of 2000 km. To be measured over time to see the degradation of the battery. In the meantime I'm going to do some accelerations to empty it a little

So, after a charging test today, I found that the energy screen is “capped” about 80.5kWh, and my M3P didnt show 507km until about 81….eeeeh….81.4 or so.
Using the energy screen to find the batterys actual calculated capacity do only work if it is 80.5hkWh or less. I did see about 80.8 or sonething earlier on this calculation but that might have been from the rounding error coming from whole percent shown. At that tine my nominal full pack was about the same so it really looked fine.
My guess is, if you see 507km or more, the capacity is at least 81kWh, probably a bit more.

 

[AAKEE]

You can't use that screen as it is capped to about 79kWh. The only way to check is with SMT.

The capping of the energy screen was new to me. Hadnt heard of it before.
I did see about 80.8kWh earlier, and I think some calcs today got it there as well. Theres a rounding error with whole percent.
Using the SMT SOC with tenths of percent put it to about 80.5kWh when the battery actually said NFP 81.6 and nominal remaining 82.0.

So, the cap for me is about 80.5 on the energy screen.
Id say that every one seing 507km or more probably have at least 81 kWh as Nominal full.

 

[GiFer]

Hello everyone,
Not sure if this has already been discussed on this thread but I thought I’d ask anyways..
Would you mind sending recommendations for a home charger? For outdoors charging.
Thanks

 

[Dogs_In_A_Pile]

Definitely don't do any range testing. Expect about 230 miles, maybe a little more, on a full charge on the freeway (assuming you're driving 80mph). Previously with the Performance vehicles, you could have expected about 220 miles.

How much should be expected of a new 2021 M3 LR then? About 255-260 miles?

 

[Jejunjm]

How much should be expected of a new 2021 M3 LR then? About 255-260 miles?

Ot but most of my commute is at 75mph, my lifetime conservative driving is 230wh/mi. So if usable battery 75 kw that's about 320 miles. Thoughts on my math?

 

[TimothyHW3]

So, the cap for me is about 80.5 on the energy screen

That is for the Performance. I was talking about the LR

 

[TimothyHW3]

How much should be expected of a new 2021 M3 LR then? About 255-260 miles?

Yes, you can expect around 260+ miles at 75-80mph. If you have the 82kWh battery.

 

[travis3000]

My friend got 560KM (347 miles) out of his 2019 model 3 long range on a road trip from Toronto to Quebec City in a single charge. And yes that was all highway driving. And that was certainly not a 82kWh battery haha. His speed ranged from 60-75mph.

He actually has a Tesla YOUTUBE page, you can ask him yourself. Look up Tesla Canuck.

 

[TimothyHW3]

His speed ranged from 60-75mph.

That is a pretty wide range of 25km/h...I highly doubt he was close to that high range, even a RWD can't get 560km out of a 120km/h run. I think the most he can hope for is 450km.

Drop it down below 100km/h at a nice summer day and then yes.

 

[AAKEE]

So, I did a Supercharging session on a V3 SuC from 10% to 100% with the Gopro grabbing the tesla screen and the iPhone shooting the SMT screen. These now is merged and changed to on frame per second and thereby sped up by 30x. The timestamp between the SMT and the tesla screen was made by checking the clocks minute change before/during the session and these was well within one second. Video match on the fram initially and at the end there is about 5 frames delta, thats some 0.2s so the SMT should be in sync with the tesla screen. Video is only 3 minutes.

My car reached 507km at 81.4kWh, which also was the Nominal full pack at that moment. I guess the 100%=507km adjusts for nominal full pack, if you are over some min. limit on battery capacity. At this moment the range was 315mi.
Also, when 509km was reached the range was 316mi, exactly as Alansubie did forecast.
I didnt charge until stop, but reached 82.0kWh, and it showed about 2kW when I stopped the charging. ( Gopro video memory full anyway, and I do not think I would have gotten any more kWh, even though reaching 82.1 would had been very fun.)

This time I did'nt have the range fluctuating between 508 and 509km, it was roick solid. I had the Rated and ideal range in SMT to reach 510km, but the tesla screen said 509km.

So, I guess the "constant" can change? 81400wh/506.835(315mi) = 160.6wh/km in my case this day ?

 

[eivissa]

Long Range 2021...no more details:
Do we know more about the Panasonic Battery Pack with an R at the end?

 

[AAKEE]

Hi,

Today I spent some time with the Supercharger to measure the battery capacity on my Performance 2021, it takes a long time to go up to 100% and then I waited at least 20 or 30 minutes for the end of balancing cells. here are the results

I made the measurements on the 3 distances of the consumer screen, 10, 25 and 50 km to be able to make an average.

318x253/1 = 80454 Wh

239x337/1 = 80543 Wh

207*389/1 = 80523 Wh

At 100% : 507 Km

So I have an average capacity of 80.5 kWh for 507 km, which is very close or even identical to what is expected. Fortunately for a car of 2000 km. To be measured over time to see the degradation of the battery. In the meantime I'm going to do some accelerations to empty it a little

I guess, from the values I have seen on my later 100% charges, that your battery capacity is about 81.4-81.5kWh or so.

I am now sure that my energy app do not show the ”thruth”. It has to be capped. I seem to get the same values as you do( about 80.4-80.5). Some calcs can show 80.8 or so, but at the same time it goes to 80.4-80.5 if I use the SOC with decimals that I get from SMT.
That despite the fact that my Nominal full pack was 81.6kWh, and the battery charged to 82.0kWh remaining.
My car did only show about 501 km at 80.5kWh charge, and I need to charge to 81.4kWh remaining to see 507km range.

 

[AAKEE]

You can't use that screen as it is capped to about 79kWh. The only way to check is with SMT.

Do we have confirmation that the cap is about 79 kWh on the 21 LR? From more than one car ?

 

[TomaGo]

Thanks for your test @AAKEE , interesting information about the caping on the Energy screen.

So the best solution for me could be to either :
- Buy a Scan my tesla to retreive some good informations
- Have fun with my car without precise informations on the battery

 

[AAKEE]

Thanks for your test @AAKEE , interesting information about the caping on the Energy screen.

So the best solution for me could be to either :
- Buy a Scan my tesla to retreive some good informations
- Have fun with my car without precise informations on the battery

Or Find someone that has Scan My Tesla for a quick check.
No chance you live near the Riviera?
I do trips by work two or three times a year to the Nice-Marseille area…( when no covid…)

 

[Jejunjm]

Can one use scan my tesla to determine battery size?