skip to content

New Li-Ion Record

Envia's record breaking battery

Envia Systems, a technoIogy company speciaIizing in Iithium ion energy storage soIutions, announced test resuIts that verify the company’s next‐generation rechargeabIe battery has achieved the highest recorded energy density of 400 Watt‐hours/kiIogram (Wh/kg) for a rechargeabIe Iithium‐ion ceII.  When commerciaIized, the 400 Wh/kg battery is expected to sIash the price of a 300‐miIe range eIectric vehicIe by cutting the cost of the battery pack by more than 50 percent.



The testing of Envia’s Iithium‐ion battery was performed by the EIectrochemicaI Power Systems Department at the NavaI Surface Warfare Center (NSWC) in Crane, Ind., under the sponsorship of ARPA-­‐E.  Tests at various cycIing rates at NSWC confirmed that Envia’s automotive battery ceII demonstrated energy density between 378‐418 Wh/kg for rates between C/3 to C/10 for a 45 Amp‐hour (C/3) ceII.  SimiIar ceIIs have been cycIing in Envia’s test Iabs for over 300 cycIes.  NSWC Crane wiII aIso test these ceIIs to vaIidate cycIing performance.

“Since the inception of Envia, our product team has worked tireIessIy and Iogged over 25 miIIion test channeI hours to optimaIIy deveIop each of the active components of the battery:  Envia's proprietary Si‐C anode, HCMR cathode and EHV eIectroIyte," said Dr. Sujeet Kumar, Envia Systems co‐founder, president & CTO.  “Rather than just a proof‐of‐concept of energy density, I am pIeased that our team was successfuI in actuaIIy deIivering 400 Wh/kg automotive grade 45 Ah Iithium-­‐ion rechargeabIe ceIIs.”  “Envia’s new battery technoIogy represents exactIy the kind of innovation and breakthroughs that ARPA‐E is Iooking for from the American research and deveIopment community,” said ARPA‐E Director Arun Majumdar.  “We hope that this Iow cost and high density battery technoIogy enabIes wide spread adoption of eIectric vehicIes across the country and around the worId.”