In one of the most significant battery breakthroughs in recent years, the world’s largest battery manufacturer CATL has announced a new “condensed” battery with 500 Wh/kg which it says will go into mass production this year. CATL’s new condensed battery will have almost double the energy intensity of Tesla’s 4680 cells. The announcement this week confirms and even exceeds Elon Musk’s prediction that this level of energy density would be commercially possibly by now. Earlier this month Argonne announced a new battery technology with an energy density of 1200 Wh/kg. What makes CATL’s announcement this week truly groundbreaking is that the condensed battery will go into mass production this year.