CR1220 lithium button battery nominal voltage of 3V, is 2 times the battery, which uses chemically very stable manganese dioxide as cathode materials and a very high specific energy lithium as the anode material. Self-discharge rate of less than 2%, long storage life. Sealed battery with reasonable structure and material, good air tightness, very safe to use. Lithium batteries have a wide temperature characteristics, in -20 ℃ - +60 ℃, the battery can work effectively stored for one year. Lithium Manganese Dioxide batteries are widely used in electronic dictionary, camera, remote control, blood glucose tester, body fat tester, automotive tire pressure gauge, electronic scales, calendar, toys, watches, attendance, MP3, radio, electronic flash products . CR1220 Specification Sheet: Nominal Voltage 3V Nominal capacity 40mAh Standard current 0.1mA Maximum continuous current 1.0mA Maximum pulse current 5mA maximum size Φ12.5x2.0mm weight 0.9g we can provide various types of cell processing on fillet lead , twin batteries, or processed into hanging card (chip) equipment, as well as provide other processing methods.