Amprius unveils high-energy SiCore battery cell for aviation and electric mobility

Jan. 21, 2025
The new SiCore cell boasts an energy density of 370 watt-hours per kilogram (Wh/kg) and a power density exceeding 3,000 watts per kilogram (W/kg).

FREMONT, Calif. - Amprius Technologies in Fremont, Calif. has unveiled a new SiCore battery cell designed to enhance high-performance electric mobility. The cell, part of the company’s expanding Silicon Anode Platform, leverages proprietary silicon anode technology. Amprius describes the new cell as a significant advancement for high-demand applications.

The new SiCore cell has an energy density of 370 Watt-hours per kilogram (Wh/kg) and a power density exceeding 3,000 Watts per kilogram (W/kg). It supports discharge rates of up to 10C without cooling and 15C with active cooling. According to Amprius, these capabilities make the cell ideal for aviation applications, including drones and electric vehicles. 

Amprius announced it had begun delivering pre-production samples to customers, including Teledyne FLIR, which provides unmanned solutions to military and public safety sectors.

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“Amprius’ new SiCore cell is positioned to deliver a transformative boost in power and energy for our unmanned aerial systems, extending mission durations while maintaining critical performance under demanding conditions,” said Tung Ng, Vice President of Unmanned Systems North America at Teledyne FLIR. “We are eager to evaluate how this breakthrough technology can meet the rigorous needs of our defense, security, and industrial customers.”

“This SiCore cell is a technical breakthrough for the industry, achieving a power-to-energy ratio that we believe is unprecedented at such high energy density,” said Dr. Ionel Stefan, Chief Technology Officer at Amprius Technologies. “By optimizing the silicon anode composition, we have redefined the trade-off between power and energy, creating new possibilities for high-demand applications.” 

In late 2024, Amprius delivered pre-production 10Ah samples to six customers for testing in real-world conditions. The company plans to commercialize the SiCore cell in early 2025, aiming to meet industry standards and market demands for next-generation battery solutions.

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