The Californian battery developer Amprius Technologies says it has increased the energy density of its cells to around 500 Wh/kg or 1,300 Wh/l. Results from the Mobile Power Solutions testing institute have shown that the cells deliver an energy density of 504 Wh/kg or 1,321 Wh/l at 25 degrees Celsius. According to Amprius, the cells […] More…