Amprius Technologies, which makes lithium-ion batteries with silicon anodes, announced it had shipped SiMaxx cells to the Korean Aerospace Research Institute (KARI).
The US company completed a volume shipment of its 450Wh/kg/1,150Wh/L SiMaxx cells to KARI to power its solar-powered stratospheric full-scale vehicle.
The cells are designed to reduce weight and increase aircraft flight distance range. It claimed the cells are the only known commercially available batteries that can provide enough power and endurance for high-altitude pseudo-satellite (HAPS) overnight stratospheric flights.
They are also used in high-energy military storage applications. The company expects to manufacture the cells in large-scale production at its facility in Colorado, in 2025.
