EVs Explained: What is a kilowatt-hour, and while we’re on the subject, what is a kilowatt?

โNow presenting our brand-new (insert new EV here), with a 50-kWh battery pack and 300 kW motors,โ exclaims some extravagant press release from yet another startup. While itโs quite nice of you to spill all the beans like that, Iโmโฆ