Credit: tesla / screengrab Tesla's Battery Day finally happened Tuesday, drive-in movie theater style, with attendees sitting in parked Tesla cars. They were in the Fremont car factory lot facing a stage to hear about the next advancement in battery technology powering Elon Musk's electric vehicles. Drive-through Battery Day. Elon Musk: Tesla Battery Day tech won't be mass produced until 2022 Cheaper battery production with more energy density is the winning recipe for EVs, and Musk thinks Tesla's got it down with the new batteries. But as he warned before the event, don't expect any mass production of Tesla's own batteries until 2022. Although there's a pilot plant in Fremont up and running already, it's not a full battery production facility. Tesla wants to be more efficient. Credit: tesla / screengrab The new batteries will be "tabless"—it's a whole thing to remove the tab in battery production and Elon talks all about it on the three-hour livestream recording. They'll also be cobalt-free, something Tesla has long hoped to do for a cheaper, more environmentally friendly battery. It wasn't all electrodes, anodes, and cathodes at the event (although there was a lot of that): The next generation Model S Plaid was introduced with 520-mile range. (Sorry, Lucid Air, that means you're no longer EV range champion.) The newest performance car with three motors is already up on the Tesla website for $140,000. It's expected to arrive by the end of 2021. Topics