From The Limiting Factor. Why are space-based AI data centers inevitable? In this video I provide analysis at 3 levels of analysis: Level 1: Starlink’s 10,000+ satellites already prove onboard compute, power, cooling, and laser links work reliably in orbit today. Level 2: Techno-economic models from Andrew McCalip, Mach 33, and Pranav Myana show costs…

From The Limiting Factor. Donut Lab claims to have a battery that achieves a whopping 400 Wh/kg of energy density, charges in 5 minutes, lasts for 100,000 cycles, uses abundant non-toxic materials, can maintain performance at extremely low temperatures, is safe at very abusive temperatures, and is lower cost than lithium ion batteries. The question…

From The Limiting Factor. It’s been 6 years since I started the channel and 5 years since Battery Day, and Tesla has now finally and officially cracked the fully dry 4680 production process. In this video I’ll also cover Tesla’s Q4 2025 earnings call. Channel Sponsor: https://www.rebellionaire.com/ Signature Solar Referral Link: https://signaturesolar.com/?ref=TheLimitingFactor These are the…

From The Limiting Factor. One of the most frequent arguments against renewable energy is that it’s unreliable because solar and wind can’t provide power when the sun isn’t shining or the wind isn’t blowing. But is that the case? No, grid reliability is primarily a function of regulation, planning, and design. Channel Sponsor: https://www.rebellionaire.com/ Signature…

From The Limiting Factor. Tesla’s recently filed a patent application for ‘Method of Soda Ash Preparation for lithium mineral refining.’ Today I’ll walk you through the detail, the stated benefits, and some hidden benefits. Channel Sponsor: https://www.rebellionaire.com/ Signature Solar Referral Link: https://signaturesolar.com/?ref=TheLimitingFactor These are the part of my system I purchased from Signature Solar: -EG4…

From The Limiting Factor. In this video, I’ll walk you through how Elon could power 1 Terawatt of off-grid compute, and the implications. Channel Sponsor: https://www.rebellionaire.com/ Signature Solar Referral Link: https://signaturesolar.com/?ref=TheLimitingFactor These are the part of my system I purchased from Signature Solar: -EG4 6000XP Off-Grid Inverter (I use this for my grid-tied solar system…

From The Limiting Factor. Today I’ll run you through analysis of the EVE 4695 and CALB 4695 in comparison to the Tesla 4680. They both have higher energy density, but they’re also 2-5 years behind Tesla in terms of manufacturing scale. Thanks to James Ma of Caishen Road: https://x.com/Jamesma1109 Channel Sponsor: https://www.rebellionaire.com/ Signature Solar Referral…

From The Limiting Factor. Where will Elon build his 1 TW of compute and beyound? In this video I define what type of compute he means, explore the limits of the grid, and why eventually AI compute will have to go off-grid or off-world. Channel Sponsor: https://www.rebellionaire.com/ Signature Solar Referral Link: https://signaturesolar.com/?ref=TheLimitingFactor These are the…

From The Limiting Factor. After over a year of radio silence from Tesla on the 4680 ramp we finally received some tidbits of information from the Annual Shareholders meeting. Tesla has staked their new product lines on the 4680, but there are still questions around the dry coating process. Channel Sponsor: https://www.rebellionaire.com/ Signature Solar Referral…

From The Limiting Factor. In Tesla’s Q3 2025 earnings call, they provided important updates across their product portfolio. In my view, it was an under rated earnings call, despite the lack of updates on the fully dry 4680 ramp. Channel Sponsor: https://www.rebellionaire.com/ Patreon: https://www.patreon.com/thelimitingfactor Paypal: https://www.paypal.com/paypalme/limitingfactor42069 Teespring: https://teespring.com/stores/the-limiting-factor Twitter: https://twitter.com/LimitingThe Venmo: @thelimitingfactor *Timeline* 00:00 Introduction…

From The Limiting Factor. In this video, I’ll take a hard look at sodium ion batteries component by component to understand at a first principles level what their strengths and weaknesses are, along with their projected cost compared to lithium ion batteries, and how fast the sodium ion battery industry will scale. Yao, et al…

From The Limiting Factor. Elon Musk wants to build one terawatt of compute, and many people are saying that the primary bottleneck for achieving that goal will be 1 computer chips. In this video, I’ll investigate that and question whether that’s even the best way of looking at the scaling problem for 1 TW of…

From The Limiting Factor. Amprius Technologies is producing battery cells that can charge from 0-80% in as quick as 6 minutes and have an energy density of up to 500 Wh/kg. What’s the catch and is there a market for these batteries? Channel Sponsor: https://www.rebellionaire.com/ Patreon: https://www.patreon.com/thelimitingfactor Paypal: https://www.paypal.com/paypalme/limitingfactor42069 Teespring: https://teespring.com/stores/the-limiting-factor Twitter: https://twitter.com/LimitingThe Venmo: @thelimitingfactor…

From The Limiting Factor. One Terawatt of compute roughly equivalent to the U.S. power grid. Why does Elon want that much power? He want to usher in an era of abundance by using AI to do mental and physical work at low cost. The best way to achieve low cost and win the AI game…

From The Limiting Factor. Tesla filed a patent application for high voltage electrolytes, and after I dug into the research they done with their research partners, I found it’s useful for high manganese cathodes in ways that I didn’t expect. Channel Sponsor: https://www.rebellionaire.com/ Patreon: https://www.patreon.com/thelimitingfactor Paypal: https://www.paypal.com/paypalme/limitingfactor42069 Teespring: https://teespring.com/stores/the-limiting-factor Twitter: https://twitter.com/LimitingThe Venmo: @thelimitingfactor *Timeline* 00:00…