Amprius Technologies

Amprius Technologies makes silicon-anode, high energy-density lithium-ion cells that are well suited to the weight- and runtime-constrained requirements of humanoid robots.

Amprius Technologies has built its identity around silicon-anode battery technology, which delivers significantly higher energy density than conventional graphite-anode cells. This advantage is particularly valuable for humanoid robots, where every gram of battery weight directly affects balance, joint loading, and overall runtime. Operating from Fremont, California, Amprius serves aerospace, defence, and mobility customers where energy density is a primary specification—a set of requirements that maps closely onto humanoid design constraints. As humanoid makers increasingly compete on runtime and payload efficiency, high-density cell suppliers like Amprius occupy an important role in the technology stack.

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