Nanotech Energy becomes Amprius U.S. manufacturing partner for SA128 cells

Feb 3, 2026 · Partnership · Nanotech Energy · Power Systems

Nanotech Energy and Amprius established a domestic manufacturing path for Amprius silicon-anode cylindrical cells.

Nanotech Energy company media
Company media · Nanotech Energy
  • The partners refined a 21700-format SA128 cell rated at 6.8 Ah and 320 Wh/kg.
  • Nanotech Energy is Amprius’s first U.S.-based manufacturing partner for these high-performance cells.
  • The programme serves defense, aerospace and other mission-critical applications that require a domestic production chain.

Nanotech Energy develops graphene-enabled lithium-ion cells and battery materials and operates U.S. manufacturing capacity. It is a contract-manufacturing partner for Amprius silicon-anode cells used in high-energy aviation, drone and mobility applications.