Energizer Max Line of AA's is ideal for a wide range of applications, from low drain devices such as smoke alarms and clocks, to moderate and high drain applications like flashlights, music players and photo flashes. Specifications: Package Quantity: 4 Classification: Alkaline Chemical System: Zinc-Manganese Dioxide (Zn/MnO2) No added mercury or cadmium Designation: ANSI-15A, IEC-LR6 Nominal Voltage: 1.5 volts Nominal IR: 150 to 300 milliohms (fresh)* Operating Temp: -18°C to 55°C (0°F to 130°F) Typical Weight: 23.0 grams (0.8 oz.) Typical Volume: 8.1 cubic centimeters (0.5 cubic inch)