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Joined 9 months ago
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Cake day: October 5th, 2023

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  • The US really doesn’t understand that there is simply no competing with these batteries. To try to block the import of them is only going to set our own local industry back in their ability to compete in the global economy. And ironically the BMS systems for CATL are still using American semiconductors, so the US still gets some revenue from their massive expansion.

    The most viable competitors to CATL are all in China too. I’d be somewhat supportive of a CATL specific ban due to their notoriously terrible employee working conditions and crazy NDAs/non-competes, but to ban all Chinese batteries in the US would be a huge mistake.











  • Yes, but to increase longevity energy density goes down substantially. Manufacturers (and many users including myself) would not make this decision for something as weight and size sensitive as a phone. The lithium ion batteries currently used already last for 2 years after all and are relatively small. A single model S battery contains 7104 individual cells for comparison. Further, lithium battery recycling has made substantial progress over the last year and will already need to be done at scale when higher volumes of EV batteries have reached their end of life. The impact of the of life phone batteries even from the entire world will be dwarfed by that of the 26 million EVs already on the roads today with thousands of cells each (or equivalent if using prismatic cells).

    Some cars use LiFePO4 batteries for the superior longevity. But the range is reduced to somewhere between 1/2 and 2/3 their lithium ion counterparts. The industry is moving away from this trend in recent years in favor of traditional lithium ion with a software limited charge/discharge range.



  • The chemistry from holding that last 20% of charge for a while is what causes the degradation. The BMS can tell the system to stop charging before it’s full but it can’t do anything itself to prevent the cell from slowly being degraded by full charging.

    This is is a problem that occurs on the order of years and that’s why the EV companies care but phones historically don’t. More easily replaceable batteries is the real solution here, not software stopping you from fully charging.





  • Anything over $100k is plenty to live, travel, and invest with if you don’t plan on having kids. There’s a point where it’s time and experiences that are more valuable than the money, so I’d prefer fewer working hours or more engaging work than simply just salary increases. I’m certainly happy to receive bonuses and raises, but as an engineer who has never made under $100k/yr the money doesn’t change anything about the way I live and enjoy life (note that I don’t have expensive tastes and carefully watch for lifestyle creep).



  • Ya I used to always tip cash but stopped all food delivery entirely ~5yr ago. By turning food delivery into a live auction everybody loses except the company running the service. Drivers compete against eachother accepting the absolute lowest fees while customers need to play the game of choosing an appropriate tip for a prompt delivery while also ideally not shorting the employee who ultimately accepts the order. But since to accept the order they need to compete with other drivers it’s naturally going to lead to them accepting lower prices, allowing the delivery company to pocket the difference. Not a good system.


  • I personally had no problem with them charging for API access, the rate was my bigger issue. I suspect they were basing it off of the money and hype behind the large language models that were previously training using their data for free rather than the relatively few 3rd party app users. I don’t get how there weren’t more people using them considering how bad the official Android app is, but there’s no way it was substantially impacting their bottom line.

    Charging comparable rates or even 2-3x what they would get from users of the official app seeing ads also wouldn’t be an issue to me, paying to support software is generally good as it aligns user and developer interests. But with 20x higher rates than they’d get from the user using the official app that couldn’t genuinely be the case.