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Cake day: October 25th, 2023

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  • To get up a hill you have to input the energy based on m*g*h. Note how time isn’t part of this equation.

    The losses that you can affect by speed are wind and rolling resistance. Both of which go up as your speed increases. So slower is better.

    …to a point as there are consumers in your car that are independent of driving. E.g. your AC/heater, lights, and simply keeping the cars computer running also draws some power. So there is an equilibrium point where crawling even slower will no longer save energy.






  • EVs are very efficient. This means they don’t have all this waste heat sloshing around as in an ICE.

    On the down side this means an EV has to get some energy from teh battery to supply heating (but compared to the amount of energy you use for driving the energy for AC/Heating is tiny)

    On the up side this means you get heat/cold instantly and don’t have to wait for a motor to heat up. It also means you can precool/preheat your car from the app and you neve have to fiddle around with AC/heater controls while driving.














  • It won’t hurt the battery. You can charge once a week or every day. Doesn’t matter. You can slow charge at home or fast charge at fast charging station. Doesn’t matter.

    Really the only thing that matters is that you don’t run your battery too low (say, less than 5%) AND let it sit at that state of charge for days…or charge it too high (say, above 95%) AND let it sit at that state of charge for days.

    In each case you’re pushing lots of lithium ions into the anode/cathode respectively which makes them swell and can develop microcracks (which is what degrades battery health)

    To make it clear: it’s perfectly fine to charge to 100% if you need the range and leave relatively soon (e.g. within an hour) when you reach that state of charge. Similarly it’s OK to run the battery down to 0% if you immediately plug in to charge again.