Specifications: Voltage:3 Volts Chemistry: Lithium-Manganese Dioxide Size: 1/2 AA Capacity: 850 mAh Brand: FDK (Formerly Sanyo) Termination: 3 Pin Operational Temperature range: -40c to +85c Diameter(max): 14.5mm (0.57') Height (max): 25mm (0.98') Typical Weight: 9g (0.02oz) UL Certified QTY: 1 Main Applications: Water & Electricity meters Fire Alarm Memory backup power Others Replaces the Following: 1755-BAT CR1/2AA