Amprius Technologies (Amprius) launched its groundbreaking silicone-anode batteries in 2022, boasting the world’s highest-density battery cells. The company is now directing its efforts toward a distinctive application: developing a military-grade wearable battery for soldiers in combat.
The company announced that it will supply its advanced SiMaxx safe cells to finalize the development and qualification for the U.S. Army’s next-generation Wearable Battery pack.
The U.S. Army has expressed a critical need for wearable battery technology – robust, lightweight, compact solutions that allow soldiers to carry and wear them safely. Introducing a next-generation battery pack with significantly higher energy density than current solutions is a priority for the U.S. Army to revolutionize power solutions for dismounted soldiers.
The integration of SiMaxx safe cells into a battery pack is expected to approximately double the energy density of existing solutions, significantly extending mission time for soldiers on the battlefield.
“This battery pack integration marks a significant advancement in enhancing on-the-ground power solutions for the U.S. Army,” said Dr. Kang Sun, CEO of Amprius Technologies. “Our SiMaxx safe cells, known for their high energy density and safety features, will play a crucial role in enhancing mission time and reliability for dismounted soldiers.”
This development in battery technology for the U.S. Army signifies a significant advancement in wearable battery technology and emphasizes the critical role of innovation in supporting the modernization of soldiers in the field.
The SiMaxx safe cells were developed as part of the U.S. Army-funded Manufacturing Technology (ManTech) program, an initiative focused on scaling essential Army-wide manufacturing requirements.
In July 2023, Amprius SiMaxx safe cells successfully met the stringent safety and performance standards of MIL-PRE-32383 (Military Performance Specification). In January 2024, Amprius accomplished its scale-up manufacturing initiative under ManTech, culminating in the delivery of SiMaxx safe cells.
The company’s commercially available SiMaxx batteries deliver up to 450 Wh/kg and 1,150 Wh/L, with third-party validation of 500Wh/kg and 1,300 Wh/L.
