Battery Capacity: Typical new battery running at an ambient temperature of +20° C to +25° C (68° F to 77° F) can provide: 140 defibrillator discharges at maximum energy (200 joules), or 6 hours of continuous monitoring (with 2-minute CPR periods) Note: CPR periods shorter than 2 minutes can decrease the operating time that can be obtained from a new battery. Type: Disposable, sealed lithium manganese dioxide Battery Standby Life (once installed): 5 years with weekly self-test. End of life indicated by blank status window (typical remaining shocks: 9). Battery Shelf Life: Store for up to 2 years at 23°C (77°F) prior to installing in ZOLL AED 3 to maintain above battery life. Temperature : 0°C to 50°C (32°F to 122°F) Humidity: 10% to 95% (non-condensing) Weight: 317.5 grams; 0.7 lbs Size: (H x W x D) 27.75 mm x 133 mm x 88 mm; 1.0 in x 5.16 in x 3.5 in Nominal Voltage: 12 volts