• 3 Posts
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Joined 2 years ago
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Cake day: July 9th, 2023

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  • User replaceable batteries would be actual cheap, would be nice. But iPhone 15 pro battery replacement at Apple is $100, and I’d expect that to be one of the more expensive battery replacements. Many phones will be cheaper, third parties will be cheaper. While I’d rather do it myself, it’s really not that much for once every three years to keep it above 80% health, and 9% of phone replacement cost.

    the argument of “why would you try to save your battery by not using it when it has the same net effect of less battery?” is pretty short-sighted.

    The argument is

    • why try to save your phone battery when it’s critical to last the day and eventual replacement is cheap?
    • it’s much more important to save your car battery because you won’t miss reduced range on normal days, you want max range available for road trips, and replacing the battery is very expensive

  • Definitely incredible but I still feel like people’s excitement is misdirected.

    • they’re less energy dense so not likely to be on phones or many cars
    • for cars the extra life is marginal when existing batteries already last more than the life of a typical vehicle
    • much cheaper will make a huge difference in low end cars.
    • but storage is the killer app! I don’t care about energy density but they’re much cheaper and will last much longer. Huge win!

    Imagine if home battery systems cost half as much but last four times as long! Or grid storage! This is huge!


  • I don’t see this as a valid comparison.

    • replacement phone batteries are really not that expensive. Don’t overthink it. Is it really a problem you might spend $50-$100 in three years to replace the battery?
    • car batteries are not just much more expensive but they’re also overkill. Charging to 80% is more than enough for almost everyone’s daily driving on most vehicles, so why charge more?