SA02 SiCore lithium-ion pouch cell

The Amprius SA02 SiCore is a lithium-ion pouch cell with a silicon anode, supplied by Amprius Technologies as a balanced power and energy cell for battery-pack integration in drones, electric aircraft and other weight-sensitive electric platforms. It is a cell-level product: the pack builder supplies the cell interconnects, the battery management system, the enclosure and the thermal design.

The SA02 belongs to the balanced energy and power design within the SiCore range, which sits between the high-power cell, built for very high discharge rates, and the high-energy cell, built for maximum energy per kilogram. For an integrator this means a cell that serves missions needing both a good cruise endurance and enough current for take-off, climb or hover without moving to a dedicated power cell.

The main figures are a specific energy of 340 Wh/kg, a volumetric energy density of 770 Wh/L and a capacity of 11.2 Ah. Specific energy sets how much stored energy each kilogram of cells carries, which translates directly into flight time or payload for a given airframe mass. Volumetric energy density matters where the pack must fit a fixed bay. The maximum continuous discharge rate is 3C, with a pulse rating of 5C, so a single cell can deliver a continuous current of about 33.6 A, and the pack designer sizes the series and parallel arrangement against the peak and average current of the propulsion system.

Charging is rated up to 1C. The cycle life is 700 cycles at 100% depth of discharge with +1C charge and -1C discharge, and 1,000 cycles at 90% depth of discharge under the same current conditions. These figures help buyers estimate the replacement interval and the cost per flight hour of a battery pack in repeated operation.

On the mechanical side the cell is a pouch format with a length of 139.5 mm and a width of 52.5 mm. A pouch cell has no rigid can, so packs built from it normally add compression, retention and venting provisions in the assembly. Thickness is not published in the product listing, so the stack height of a pack should be confirmed with the maker.

Typical applications are battery packs for unmanned aircraft, including multirotors and fixed-wing platforms, electric and hybrid-electric vertical take-off aircraft, and other electric vehicles and robots where energy per unit mass decides the result. The product page does not list certifications for the cell.