Electric vehicles (evs) seem unstoppable. Carmakers are outpledging themselves in terms of production goals. Industry analysts are struggling to keep up. Battery-powered cars could zoom from 8% of global vehicle sales in 2021 to 40% by 2030, according to Bloombergnef. Depending on whom you ask, that could translate to anywhere between 25m and 40m evs. They, and the tens of millions manufactured between now and then, will need plenty of batteries. Bernstein reckons that demand from evs will grow nine-fold by 2030 (see chart 1), to 3,200 gigawatt-hours (gwh). Rystad puts it at 4,000gwh.