Cardiac Science G5 XBTAED001A Replacement Battery Specifications: Chemistry: Lithium Sulfur Dioxide (Li-SO2) Nominal Voltage: 12 VDC Amp-Hour Capacity: 7.5 A-Hr Watt Hour Capacity: 90 W-Hr Estimated Shelf Life: 5 years Warranty: 4 years against material and workmanship defects Operation and Standby Temperature: 0° to 50° C (32° to +122° F) Weight: 1.1 lbs Total Lithium content: