Energizer 335-SR512 Silver Oxide Button Battery provide an excellent combination of high energy and continuous voltage supply. These batteries provide long shelf life for back up energy purposes together with ideal temperature resistance and superior storage. The 335-SR512 batteries are encased individually, each with its own tear strip packaging. • Features:  Multi-Drain is a new technology from Energizer - combining Low Drain (LD) and High Drain (HD) batteries of the same voltage into one battery.  7-year shelf life - longer than previous LD or HD.  Great for watches, computer motherboards, calculators, PDAs, electronic organizers, garage door openers, toys, games, door chimes, pet collars, LED lights, sporting goods, pedometers, calorie counters, stopwatches and medical devices etc.  Associated Battery Sizes: 335, 622, 9948, AWI S60, Citizen 280-68, SP335, SR512, SR512SW, Seiko SB-AB, V335 • Specification  Chemical System: Silver Oxide (Zn/Ag2O)  Nominal Voltage: 1.55 Volts  Typical Capacity: 6 mAh* (to 1.2 volts)  Capacity Test: 150K ohm continuous drain at 21°C  Typical Weight: 0.13 grams (0.004 oz.)  Typical Volume: 0.03 cubic centimeters (0.001 cubic inch)  Impedance (40 Hz): 50 to 60 ohms