Features: 1) LR20/D/AM-1 2) 1.5V alkaline battery 3) Jacket: aluminum foil jacket 4) Diameter: 32.2-34.2mm 5) Height: 59.5-61.5mm 6) Nominal weight: 140g/pc 7) Nominal voltage: 1.5V 8) Shelf life: 5 years 9) Test condition: 2.2ohm, 4min/h, 8h/d, 0.9V 10) Duration: 16.3h Inner Packing:2pcs/shrink pack