Battery Part No. CR123A-4*2 Non-rechargeable 12V DC, 2.8Ah Capacity At 150 Joules Defibrillator: Output Biphasic Truncated Exponential Energy Sequence 150, 150, 200J Charge Time 8 sec. to 150J; 10 sec. to 200J (New Battery) Analysis Time 9 sec. The maximum time from the initiation of rhythm analysis to readiness for discharge with a new battery Less than 30 seconds The maximum time from the initiation of rhythm analysis to readiness for discharge after 6 shocks Less than 35 seconds The maximum time from initially switching power on to readiness for discharge Less than 25 seconds Audible Prompts 22 audible prompts Visual Prompts LED prompts Controls Two buttons-ON/Off, Shock Output Energy Accuracy ±15% into any impedance from 25 to 175Ω The Maximum Voltage 1200±50V Output disabled when the patient impedance is outside limits 20Ωto 200Ω Physical: Dimensions 303*216*89mm Weight 2.0kg Operating Temperature 0°C to 40°C Operating Humidity Relative humidity between 30% and 95% (non-condensing) Storage Temperature (without battery) -20°C to 55°C Storage Humidity (without battery) Up to 95% (non-condensing) Packaging size: 43x25x32cm G.W. 4KG