Tesla recently confirmed that it had completed the acquisition of Maxwell Technologies Inc., a California-based company that specializes in ultracapacitors and batteries. In a press release on Thursday, the electric car maker noted that it is transferring stocks worth over $235 million to take over Maxwell. //

Maxwell has previously stated that its dry electrode technology has demonstrated an energy density of 300 Wh/kg, and that it had “identified” a path to path to 500 Wh/kg. A Tesla Model 3 battery pack, on the other hand, has an energy density of 272 Wh/liter, with the 2170 cells producing 207 Wh/kg, according to Extreme Tech.