Longer Shelf LifeMade in USA, SureFire Lithium batteries can retain up to 90% of their original power output capability after 10 years of storage, making them perfect for emergency preparedness use. Stored alkalines deplete themselves much more rapidly. | Better Voltage MaintenanceA lithium battery maintains fairly constant voltage for up to 95% of its life, depending on discharge rate. At moderate to high discharge rates, the voltage of alkaline batteries drops rapidly, making them unsuitable for use in high-output flashlights. | Available Pack SizeSureFire approved battery pack sizes are 2pk, 6pk, 12pk, 72pk, and 400pk. All authentic SureFire batteries are packaged in a factory sealed blister pack or box and sold through authorized dealers only | Spares Carrier (Sold Separately)The SC1 Spares Carrier holds six 123A lithium batteries plus one of following shorter style lamp assemblies: P60, P60L, P61, P90, P91, R30, R60, MN01, MN02, MN03, MA02 (Spares Carrier, batteries and lamps all sold separately). |