This is the NEW VARTA CR 2/3 AA 3V 1350mAh OEM Lithium Battery CNC Computer Batteries Features: Voltage: 3 Volts Capacity: 1350mAh Chemistry: Lithium Dimensions: Diameter 0.57 x Height 1.31" Battery Shelf Life: 10 Years Brand: Varta Replacement Batteries for: CR2/3AA, 6237101301, 2/3AA The Varta CR 2/3 AA uses Lithium Manganese Dioxide chemistry for a high energy density and a wide operating temperature range of -55Adeg C to 70Adeg C. Self discharge temperature range is -30Adeg C to 75Adeg C, giving an effective shelf life of 10 years. Used for - Water meter, Electricity meter, Gas meter, Real-time clock, Backup memory power, Various measuring instruments, and Special electronic equipment."