Energizer Industrial Alkaline D Batteries. Energizer part number EN95 (Case of 72/or Box of 12). Energizer EN95 Alkaline D Size Batteries are 1.5V, ~16000 mAh capacity each. Zinc-Manganese Dioxide (Zn/MnO2) chemistry. No added mercury or cadmium. Metal jacket w/miniature flat contact terminals. Shelf Life: 10 years at 21°C. Designation: ANSI-13A, IEC-LR20.