SureFire 400 Cell Bulk Box SF123A BatteriesBatteries with a shelf life of up to 10 years. Fueling SureFire's renowned illumination tools, the SF123A batteries are engineered to optimise performance. These 1550mAh CR123A lithium primaries pack a potent 3V punch, delivering high density energy for continuous use in high drain applications. Their robust construction and chemistry ensure durability, with a shelf life up to 10 yearsideal for mission critical gear that must perform on demand.