2023 Investor Day | Tesla

>just as newer battery chemistries moved away from cobalt Tesla seems to be the leader here. Per Investor Day[0] and other sources, they - developed low-cobalt and low-nickel cathodes, to reduce scarce battery metals - increased overall vehicle efficiency to allow iron cathodes which are earth-abundant - consolidated electronic modules to reduce microchips and wiring - are soon switching to 48V, to further reduce low-voltage copper wiring (copper being a 'medium-rare' metal) - switched from copper to aluminum high voltage conductors (per Munro Live), aluminum having better conductivity-to-weight - reduced vehicle structure with structural battery design and 'gigacasting' manufacturing Many of these seem to benefit from vertical integration. Are any other manufacturers pushing as hard here? [0] this video

Stellantis is just a legacy automaker with no EV expertise, so no wonder they struggle to make money on EVs. There is an abundance of lithium on Earth. Increased demand increases production. The price spikes are temporary due to a lag between increases in demand and the production that follows: this video

How do you power a city at night if all you have is solar? Solar requires 100% reliable backup. Batteries? That's backup. Oh, wait. The batteries need backup because they cannot be charged by a solar array that is sized to only fit the load. You need to oversize it. By a lot. In fact, you need to at least double your array size to charge batteries to be used at night. In other words, backup for the backup. Wind? That's backup. Hydro? That's backup. More solar from thousands of miles away where there might still be light? That's backup. Nuclear? That's backup. Gas/Coal/Fossil? That's backup. Oh, wait, here's Elon Musk talking about something you claimed to be a lie, when I said you need to overbuild solar arrays by 7x or more for continuous power. Here he is, less than two weeks ago: this video You need to 5x for continuous power, he says. Oops. It's also great that he mentions solar and wind can coexist. Some of backup can be co-located at some locations. Fantastic. Please stop resorting to insults. Please? Insulting people does not change the reality around you. It never will. Do the math and understand what you are talking about. Please. Nobody is saying solar is bad or impossible to use. This interpretation you seem to prefer is entirely fabricated. My claim that solar requires 100% backup is --quite literally-- as true as day and night and as necessary as what happens with solar between day and night. That you continue to attack and insult me over this is difficult to unders

Over 20 years. Per Tesla investor day,[0] this compares favorably to ~$14 trillion in investment that would be needed for fossil fuels over that time. [0] this video

Or to put it in Musk's own words[0]: "This is really the main message of today. And I really wanted today to be not just about Tesla investors who own stock, but really anyone who is an investor in Earth . "What we're trying to convey is a message of hope and optimism. And optimism that is based on actual physics and real calculations, not wishful thinking. Earth can and will move to a sustainable energy economy, and will do so in your lifetime." [0] this video

The savings in terms of weight and efficiency are actually significant. This was covered in Tesla's investor day presentation earlier in the year: The section on electronic architecture (~10min): this video The sub section (~4min) on 48V in particular: this video

Yes I know about eFuses, they were used on the Xbox 360 console as well. As far as I know, they are similar types of eFuses on the Tesla that are capable of changing their state via firmware instead of one time blow (different application) but I could be wrong. Its just in this case the thing being controlled is not a checksum for what firmware can be installed, but a checksum to confirm if current should flow to a specific path. [1]: this video

I fell for this fallacy during the early days of the Tesla Skeptics wave. I thought no way this nonsense management style will keep them going once the competitors catch up. OEMs know how to make good reliable cars. Tesla is a shitshow. Turns out the incumbents repeated many of the EV specific mistakes Tesla did early on, and Tesla continued to innovate in what they thought matters (electric powertrain, software, infrastructure etc.) Even today if you watch some of Tesla's old battery day presentations, I am amazed at the level of care they put into their operations. The systems integration goes down to even the little things: this video People really see this with how far ahead SpaceX and Starlink are. How does Musk keep getting the top people from the best schools to want to come to his companies when it is well known that prior groups get ground down to nothing and then tossed aside? I tried to figure this out by confronting Starlink employees directly at DEFCON conference a few years back. Essentially they are so driven they just want to work with A players. They dont tolerate B players or they will leave. Musk is sometimes wrong to the detriment of the team but sometimes he is really right and he pushes the team to perform their best and to think outside the box(or first principles as he would say).