Rayovac - RAY82430PPTFUSK Fusion AA batteries excel in today's most power-hungry devices, including digital cameras, high-powered toys and grooming devices. Pro pack contains 30 advanced alkaline batteries. Slim Seal technology maximizes internal battery capacity. Increased anode density improves discharge efficiency. Improved cathode formulation enhances electrical conductivity. Mercury-free, advanced alkaline batteries stay fresh in storage for 12 years.