Emergency-Grade Reliable Power: Lifepak 1000 AED Battery Expiring 2028 During sudden cardiac arrest, the reliability of the Physio-Control Lifepak 1000 Automated External Defibrillator (AED) battery is a matter of life and death. This 100% OEM-grade replacement battery is precision-engineered to match original part numbers 3205379-006 and 11141-000156 (including cross-reference part 1141-000156). Featuring AED-specific LiMnO2 (Lithium Manganese Dioxide) cells, it delivers a stable 12V voltage, 4.5A current, and 54Wh energy outputensuring the device activates instantly in emergencies and supports multiple defibrillation shocks without interruption.