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Amprius Introduces High Energy Density Cells for Unmanned Aviation

September 2, 2026

1 min read

Key Takeaways

Amprius introduces SiCore 500 cells with 500 Wh/kg energy density.
Cells can be produced on conventional lithium-ion manufacturing equipment.
Commercial availability expected in Q4 2026.
Designed for long-endurance aviation applications.

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Strategic Implications

Amprius' achievement may indicate a significant advancement in energy storage for unmanned aviation, suggesting potential for longer flight times and increased payload capacity. This development could strengthen Amprius' position in the market and may set a new standard for lithium-ion battery performance in aerospace applications.

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What Happened

Silicon Anode Lithium-Ion Batteries Reach 500 Wh/kg Milestone

Amprius Technologies has announced the introduction of its second-generation SiCore cell, reaching an energy density of 500 Wh/kg on conventional lithium-ion manufacturing equipment. The new cell is designed for long-endurance aviation applications, including High-Altitude Platform Stations and fixed-wing drones. Commercial availability is expected in Q4 2026, with initial production planned at Amprius’ Fremont, California facility. This development was reported by Unknown Source.

Source | Originally Published: September 2, 2026

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