High-energy battery packs built on Amprius SiCore™ silicon anode cells. Engineered for the most demanding power-to-weight requirements. The hard choices are already made.
Each Gravitas pack is engineered backward from a single binding constraint — endurance, or peak power. You start with the build that matches your problem, not a catalog you have to adapt.
Built for platforms where mission duration is the binding constraint. Cell selection and pack architecture prioritize energy density across the full discharge curve. When flight time is the metric that matters, Lift is the starting point.
Built for peak output. Discharge architecture supports sustained high-C operation with thermal margins sized for demanding-cycle use. When instantaneous power is the constraint, Thrust is the answer.
Both lines are built on Amprius SiCore™ silicon anode cells — the same technology qualified for high-altitude and stratospheric aircraft. Up to 450 Wh/kg at the cell level, among the highest-energy commercial cells available. The pack starts with the right cell.
Gravitas SKUs are not catalog items. We identified the most demanding power-to-weight use cases and engineered backward. Voltage, capacity, and form factor are locked — because locking them was the work. A pack built for your class of problem, not adapted to it.
Every Gravitas pack ships with cell lot data, test results, and performance records. Not paperwork — the evidence chain that lets your engineering team verify, validate, and stand behind the system.
Tell us the platform and the constraint you're designing around. Leave your details and we'll come back with the pack that fits — and the numbers behind it.