Factorial, which specializes in solid-state battery technology for EVs, has announced the delivery of B-samples of its 106+Ah lithium-metal solid-state battery cells to Mercedes-Benz.
The companies say this is the first B-sample delivery of solid-state battery cells to a global auto maker, highlighting progress toward the series production of passenger EVs equipped with this technology.
Factorial’s solid-state batteries are designed to improve the range and performance of EVs while reducing overall vehicle costs. By leveraging existing lithium-ion battery manufacturing processes and supply chains, Factorial aims to simplify the B-sample validation phase, for faster mass production.
As part of the joint development agreement, Factorial has already manufactured thousands of large-format solid-state batteries and shipped over 1,000 100+Ah solid-state battery cells to Mercedes-Benz during the A-sample phase.
Siyu Huang, CEO and co-founder of Factorial, said, “This swift progression from A-sample to B-sample delivery in under a year highlights Factorial’s rapid innovation capabilities and we continue to push the envelope to accelerate the adoption of solid-state batteries in the automotive sector.”
The B-samples will now be integrated into modules and battery packs for extensive testing and optimization. This phase involves validating the module and pack designs against Mercedes-Benz’s performance specifications and confirming the quality of Factorial’s supply chain and manufacturing processes.
The solid-state battery cells use the Factorial Electrolyte System Technology (FEST) platform, featuring a lithium-metal anode for a high energy density of 391Wh/kg. These batteries are produced using existing lithium-ion battery equipment with minimal modifications.
“We are thrilled to advance to the B-sample phase and to mark this milestone with a global automotive leader like Mercedes-Benz,” said Huang.
Markus Schäfer, member of the board of management and CTO at Mercedes-Benz, said, “These B-sample batteries give us the opportunity to further validate this next-generation battery technology with the goal of enhancing range and performance, reducing overall vehicle costs, and offering the most desirable electric vehicles to our customers.”
In addition to Mercedes-Benz, Factorial has joint development agreements with Stellantis, Hyundai Motor Company and Kia Corporation.