These premium D Alkaline Batteries excel in today's power-hungry devices including high-powered toys, stereos, flashlights and more. Plus, they're designed to prevent damaging battery leaks and tested twice prior to shipment to ensure reliability. These D cell batteries contain power rings for consistent performance. Specially formulated for power-hungry, High-Tech devices, the energy-dense Rayovac Fusion premium formula provides more power than Rayovac High Energy. No competitor's alkaline batteries outlast Rayovac Fusion Premium Alkaline D Batteries*. *Average ANSI performance Test