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Joined 1 year ago
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Cake day: July 4th, 2023

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  • The main problem with the new leaf is the lack of battery cooling. After 3 (sometimes 2) rapid charges in a day the battery is at max temperature and the charge rate drastically reduces.

    Unless you already have a CHAdeMO V2G charger, I recommend choosing an EV with battery cooling (almost all of them). You can probably find one with more features and longer range for a lower price than a new Leaf.

    If you aren’t planning on using the car enough to worry about battery overheating, and you enjoy the test drive, it’s not actually a bad car. Just a little overpriced.













  • Customise the displayed clock. I have 3 monitors, a taskbar on each, and at least one clock on each. From left to right my clocks show:

    Unix time (1695110535)
    Full datetime (2023-09-19T17:32:15 +0930)
    12 hour time (5:32)
    Abbreviated datetime (Tuesday, 2023-09-19, 17:32).

    If I wanted to, I could display the datetime as YYYY-hh-MM, ss:DD:mm. I’m fairly sure this is not possible on windows.



  • Historically, electric cars have caught fire much less often than petrol cars (even accounting for the lower number of EV’s on the road). Most of these have been from a single battery manufacturing line and caused by a single misaligned robot that placed the battery terminals too close together. These batteries have all been recalled under warranty.

    There are battery types that are better for grid storage than hydrogen. One of the main drawbacks of hydrogen storage is its low round trip efficiency of around 30%.

    Redox flow batteries are easily scalable, liquid metal batteries have very low maintenance costs and long lifespans, and sodium ion batteries are much cheaper than lithium ion batteries. It will be interesting to see if any of these options make mass market.


  • Car batteries last more than 10 years in cars, have a second life as static storage for likely much more than 10 years, and we currently have the ability to recycle over 95% of battery materials into new batteries.

    Hydrogen used in fuel cells has a round trip efficiency of around 30% (compared to 90%+ for batteries). If the hydrogen was generated from solar power, we would need 3 times as many solar panels to drive hydrogen cars vs battery cars.

    Most (98%+) of all hydrogen is currently made using fossil fuels. The most common method is methane steam reformation. The methane (natural gas) is combined with high pressure, high temperature steam. The methane reacts with the steam to produce hydrogen and carbon dioxide.
    The carbon dioxide is usually vented to the atmosphere (some places capture the CO2, and use it to pump oil out of the ground where the CO2 is also released into the atmosphere).
    The hydrogen also contains less energy than the methane that was used to make it.