If you are interested in batteries, the C-rate should interest you. I build my own electric cars, and am now condensing important theory into these 3min - 5min videos. This one is about the c-rate for batteries. Big auto and battery manufacturers like AESC, CATL, BYD and Panasonic spend a lot of time optimising their batteries, and carefully determining the so called C-Rate. In one sentence: It measures the rate at which a battery can be charged or discharged, relative to its capacity.<p>I make these videos so it can help someone not ruin expensive equipment (like I have done!) and still get the knowledge.<p>Additionally I am working on "duolingo, but for learning ev tech" and made a little hello world quiz. Answer 10 questions and then get a little breakdown where you are strong and where you are weak: <a href="https://foxev.io/academy/" rel="nofollow">https://foxev.io/academy/</a><p>Given that this is HN I expect everyone to be strongest with "Software".<p>I hope this helps someone, sorry about the influencer glasses, and I am aiming to make as many of these videos as possible to break down complicated and sometimes misrepresented facts as easy as I can, with exactly one concept per video :)
The slow charge = longer life axiom is directly contradicted by this Stanford study on EV batteries:<p><a href="https://news.stanford.edu/stories/2024/12/existing-ev-batteries-may-last-up-to-40-longer-than-expected" rel="nofollow">https://news.stanford.edu/stories/2024/12/existing-ev-batter...</a>