Battery, 9V, High Performance, Capacity – Batteries 800 mAh, Standard Battery Series Ultimate Lithium, Battery Chemistry Lithium, Voltage – Batteries 9V DC, Standard Battery Pack Size 1, Max. Operating Temp. 140 Degrees F, Min. Operating Temp. -40 Degrees F, Shelf Life 10 yr, Standards ANSI-1604LC, Height 1.8 in, Overall Height 1.9 in, Width 1 in, Depth 0.7 in