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Cake day: June 17th, 2023

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  • FrederikNJS@lemm.eetoxkcd@lemmy.worldxkcd #2948: Electric vs Gas
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    6 days ago

    I’m sorry but I’m too lazy to dig up links to back up my claim. But you are correct in that electric vehicles pollute far more being produced than combustion engine cars, however the electric vehicles gain that back over it’s lifetime if your charge from mostly non-fossil sources. The figures I have read says that over the lifetime of a car, electrics output 70% less CO2 than combustion cars, and that includes the production of each of the cars.




  • ZFS doesn’t really support mismatched disks. In OP’s case it would behave as if it was 4x 2TB disks, making 4 TB of raw storage unusable, with 1 disk of parity that would yield 6TB of usable storage. In the future the 2x 2TB disks could be swapped with 4 TB disks, and then ZFS would make use of all the storage, yielding 12 TB of usable storage.

    BTRFS handles mismatched disks just fine, however it’s RAID5 and RAID6 modes are still partially broken. RAID1 works fine, but results in half the storage being used for parity, so this would again yield a total of 6TB usable with the current disks.







  • I could imagine how you could make an entirely electro-mechanical setup to handle the Tesla doors, and probably make them more reliable in turn.

    But yeah, everything being controlled by a computer is becoming more and more common.

    For the Ioniq 5 and EV6, the computerised portion is not required though. On the lower trim levels the door handles are simply spring loaded, and you have to push the front of the handle, to lever it out to grab. On the higher trim levels there’s a motor to push the handle out, but it’s still just spring loaded, so nothing is stopping you from levering it out just like on the lower trim levels. Pulling the handle is exactly the same as pulling the handle in any other car, it just mechanically opens the door. And there’s a fully mechanical lock as well. The door handle on the inside is also entirely mechanical.

    Here you can see how the handle and lock works if the car is entirely dead (at 1:38) https://youtu.be/Lv6wwn8m-8U&t=98

    I like how Hyundai have managed to add all the nifty features and conveniences with electronics and computers, without compromising the mechanical reliability.



  • Yeah, the leaf is notorious for not having proper battery thermal management, meaning it overheats when charging, which results in aggressive degradation. The small battery also means that you put many more full discharge-recharged cycles on the battery, which again accelerates degradation.

    I bought an Hyundai Ioniq 5, with a 77.4 KWh battery, which is supposed to go 488 km (or 303 miles) of course it doesn’t quite in real life, but it seems to handle about 422 km on a full charge. That battery pack has a liquid coolant loop, and the car actively heats and cools the the battery pack to keep it’s temperature in the sweetspot, both when charging and driving. Additionally the car comes with a 8 year warranty on the battery pack, so if it loses more than 30% capacity, it will be a warranty replacement.

    That being said, some of the people who bought a 2022 Ioniq 5 has tested their batteries now after 2 years of use, and even people who have almost exclusively fast charged the car are seeing less than 3% degradation over the 2 years of ownership.

    Many other EVs come with 10 year warranties on the battery packs.

    Tesla (which also have thermal management) has also publicised statistics that say that their vehicles have on average 12% degradation after driving 200.000 miles.








    • 1TB NVMe SSD
      • 512 MB EFI
      • BTRFS partition for / filling up the rest
    • Ancient 128 GB SATA SSD
      • Swap
    • 1TB SATA SSD
      • 500 GB Windows installation for VR games
      • 500 GB BTRFS partition mounted at /mnt/games

    Since both my root and home are on the same BTRFS partition they share space.

    I have made sure to create sub volumes for the Steam and Game install directories, to avoid taking snapshots of them.

    Steam has 2 “libraries” registered, one in my home directory and one in /mnt/games