Envia Promises Big Breakthrough for Electric Car Batteries

Envia Systems is announcing at the ARPA-E conference that it has achieved a critical milestone: a rechargeable lithium-ion battery with an “energy density” of 400 watt-hours per kilogram, the highest energy density known to be recorded for a rechargeable lithium-ion cell. When commercialized, this 400 Wh/kg battery is expected to slash the price of a […]