Energizer Ultimate Lithium AA 7638900343526 is a primary battery pack for devices that use AA cells. The listing identifies it as a 10-battery pack in the FR6 format.
Each cell uses lithium chemistry and provides 1.5 V nominal voltage, with a listed capacity of 3 Ah. This gives you the AA power source specified for compatible everyday and electronic devices.
The product fiche gives an operating range of −40°C to +60°C and states that the batteries retain energy for 20 years in storage.