Hi,
@PRSIST. I'm predicting 55 and 75 kWh packs. I created the Estimator in September 2016 and it has been showing 55/75 kWh since then. Those are my predictions based on my calculation. I was correct about the 75 kWh pack. We shall see about the 55 kWh.
Here are a few different scenarios for the smallest battery and what I think about them:
Scenario 1. 55 kWh battery with 215-220 mi EPA rated range. << 80% likely
Scenario 2. Software limited 55 kWh (actual 60) battery with 215-220 mi EPA rated range and 60 kWh battery with 235-240 mi EPA rated range. << 19% likely
Scenario 3. 60 kWh battery with 235-240 mi EPA rated range (no 55 at all). << 1% likely
Scenario 4. 60 kWh battery with 215-220 mi EPA rated range. << 0% likely. Technically not possible.
Scenario 1: 55 kWh
The base model will be 55 kWh. This would make sense because my calculations show that the Model 3 55 would have 218 mi EPA rated range which is more than the promised 215 mi for $35,000. Tesla can't increase the base price because Elon keeps his promises and he promised 215+ mi for $35K and that's what he will deliver. 60 kWh base model for $35,000 is a terrible idea because of poor profit margins. 60 kWh base model for more than $35,000 is another terrible idea because they have promised $35,000 base price. However, it is possible to have a 60 kWh version which brings us to the next scenario.
Scenario 2: 55 & 60 kWh
The base model will have a 60 kWh pack that's software limited to 55 kWh. In this scenario, the starting price would still be $35,000 but people could software upgrade to 60 kWh for $3,000. After they have fulfilled all reservations, they would discontinue the software limited pack and continue with the 60 and 75 kWh packs. The Model 3 60 should have 236 mi EPA rated range which is almost the same as Bolt's range.
The problem with this scenario is that most people don't want to pay extra to software upgrade the battery. They would rather keep the software limited pack and charge to 100% every day. Therefore, this would be a bad idea in terms of profit margins. However, there is a solution for that. They could start with the 60 kWh and continue with 75 and leave the software limited pack (60 limited to 55) last. People who want a 55 would have to wait at least 6 months longer. Most people would just pay the $3,000 extra instead of waiting. This way they would keep their $35,000 base price promise and at the same time avoid profit margin issues.
I keep coming back to this second scenario because it is the kind of thing Tesla would do. They have done exactly that when they first launched the Model S. They promised $50,000 base price. To keep the promise, they released the Model S 40 at $49.900 but it was actually a software limited 60. Then they quickly discontinued the 40. The same thing could happen now.
I think Tesla's original plan was to start with 55 and 75 kWh versions. They had calculated that the Model 3 55 would have more than 215 miles EPA rated range so that's the number they announced during the reveal event. At the same time, they already had the digital designs for the 60/85 kWh packs ready. After the Bolt was released with 238 mi EPA, it must have been very tempting for Tesla to switch to Scenario 2. Therefore this scenario is also possible and I gave it 19% chance but notice that in this scenario, the 55 kWh is still there even though it is a software limited 60.
These are my estimated EPA rated range numbers:
218 mi (351 km) for the Model 3 55, starting at $35,000
227 mi (366 km) for the Model 3 55D, starting at $39,000
281 mi (453 km) for the Model 3 P75D, starting at $74,000
284 mi (458 km) for the Model 3 75, starting at $45,000
297 mi (477 km) for the Model 3 75D, starting at $49,000
In case there is a 60:
236 mi (379 km) for the Model 3 60, starting at $38,000
245 mi (394 km) for the Model 3 60D, starting at $42,000