Hmmm - speculation that Austin Ys are using 50kWh packs.
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Tesla, TSLA & the Investment World: the Perpetual Investors' Roundtable
- Thread starter AudubonB
- Start date
I'm skeptical. They haven't rolled out the new chemistry yet so these aren't going to be super efficient.
There are cars in the wild though. They are getting charged and we will find out soon. It's super easy to check this. Just run one down and charge it.
Yeah, I'm taking it with a truckload of salt. Seems too good to be true.
willow_hiller
Well-Known Member
Supercharging video already showed it taking 59 kWh from 9% to 97%. So it can't be 50 kWh.
We also need to think about the other targets for 4860 Model Y production:-
- Lower costs / higher margins.
- Smaller pack size / less weight and raw materials.
- Rapid scaling of volumes with the lowest possible capex and a low risk manner.
As 4680 production ramps, up and we have additional innovations introduced, like more silicone in the anode the charging speeds might improve.
If I had to choose, lower cost and less raw materials are more important in terms of the mission, as long as the end product is good enough.
Well, it's pretty close to 50kwh, maybe it's 55kwh? Because some kwh are lost to the charging+car being on in the sun with the A/C blasting and battery management system kicking on.
Assuming 10% loss. That would show 60 kWh. 20% would be 55ish. To me, 60 passes the sniff test all around.
Current Model Y is 270 Wh/mi.
If the 4680 MY has only 50 kWh and range of 279 miles it would be 179 Wh/mi.
That is an absolutely giant leap in efficiency. Seems like something Tesla or someone would have mentioned by now.
One of the problems with the Tesla Twitter community is some of the louder voices tend to rebroadcast good news with little to no effort to verify it.
JRP3
Hyperactive Member
They aren't.
Exactly. It's impossible that the larger heavier Model Y is more efficient than a Model 3. It's not a 50 or 55 kWh pack.
Or wildly speculate with a tilt that they’ve heard it’s true! 50 kWh just doesn’t pass the sniff test. 55 could but really tight. 60 makes a lot of sense (or 59 with a round down on the model)
willow_hiller
Well-Known Member
Just looked it up, and I'm pretty sure the +kWh display on the vehicle screen reports only the energy actually used by the vehicle and is already net of losses. The vehicle saw +59 kWh enter the pack from 9% to 97%.
So unless the Model Y AWD expends a ton of energy cooling the cells, I don't think it could be far off of 67 kWh usable.
The 4680 doesn't need to have amazing energy density or charge speed to be an incredible innovation. It can be an innovation in terms of cost and ease of manufacturing.
Texas Ys are much lighter.
"The Texas-made Model Y at 4,220 pounds weighs 178 pounds less than the Long Range and 142 pounds less than the Performance."
"The Texas-made Model Y at 4,220 pounds weighs 178 pounds less than the Long Range and 142 pounds less than the Performance."
bkp_duke
Well-Known Member
178 lbs is not "much". 4%. "slightly" is a more appropriate adjective.
People spend a lot of money to drop that much weight on cars for performance reasons. I think nearly 200lbs dropped is pretty great. 2170 pack weights 1060lbs. So if half that savings is from the pack and half from the castings, then it looks even better. Obv things like seats, motors, etc. are unchanged.
I’m 99% sure it is what you’re charged (matches my receipts on supercharging). Which would be delivered to the vehicle, not delivered to pack. So various charging losses would be included.
I'm taking a break from moderation due to work constraints, but I can see it just fine. Tesla, TSLA & the Investment World: the Perpetual Investors' Roundtable
willow_hiller
Well-Known Member
This is the best article I can find on the subject, where they used a Chademo adapter so they could see the kWh reported by the EA station vs the kWh reported by the vehicle screen:
Tesla Model 3 Charging Losses Explained
We examine the YouTube video from the channel, State Of Charge, that analyzes and explains charging losses when DC fast charging a 2021 Tesla Model 3.
insideevs.com
My Model S used 68 Wh/mile for 30 miles driving very carefully; hypermiling vs. normally 280 at 77 mph. I needed to get to a supercharger since I don't like my SOC below 10%.
I amazed myself. THIS level would calculate to over 1300 miles for my 90 kw Tesla. I would need more downhill though LOL.
In relation to other chargers I can only say I think they put them in to discourage EV sales. I don't trust this billion dollar expansion of generic chargers using taxpayer money. The ones they have now are bulky, heavy and hard to use besides being slow if they even work.
I love the 250 kWh Tesla SCs which have an easy to plug in connector. Fossil fools are repeating the same thing expecting a different result. I believe that is the definition of insanity.
I amazed myself. THIS level would calculate to over 1300 miles for my 90 kw Tesla. I would need more downhill though LOL.
In relation to other chargers I can only say I think they put them in to discourage EV sales. I don't trust this billion dollar expansion of generic chargers using taxpayer money. The ones they have now are bulky, heavy and hard to use besides being slow if they even work.
I love the 250 kWh Tesla SCs which have an easy to plug in connector. Fossil fools are repeating the same thing expecting a different result. I believe that is the definition of insanity.
Attachments
I’ve personally had 42 kWh and gotten 48% charge on an 18 M3P (so ~75 kWh pack). That was just in March. On a V3, the discrepancy tends to be higher on % vs kWh… which makes sense with cooling losses.This is the best article I can find on the subject, where they used a Chademo adapter so they could see the kWh reported by the EA station vs the kWh reported by the vehicle screen:
Tesla Model 3 Charging Losses Explained
We examine the YouTube video from the channel, State Of Charge, that analyzes and explains charging losses when DC fast charging a 2021 Tesla Model 3.
Stretch2727
Engineer and Car Nut
Agree, automakers pay a lot for a few pounds for many reasons. 178 lbs is a lot but keep in mind you have given up 50 miles of range.
Still would be nice to see a LR AWD on the same scale. A 4000 lb car on a truck scale may have some inaccuracies.
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