The Philips HeartStart Lithium Defibrillator Battery delivers critical power for life-saving defibrillator equipment when it matters most. Specifically engineered for Philips HeartStart® HS1 and FRx models, this battery ensures your defibrillator is always ready for emergency cardiac situations. This high-performance power source features extended operational capability, providing a minimum of 200 shocks or 4 hours of continuous operation. The battery's engineering meets EN 60601-2-4:2003 standards for medical device safety, while its lightweight design (0.7kg) maintains portability without compromising power. Key features Long-life lithium manganese dioxide cell composition for dependable performance Clearly labelled with install-by date for proper maintenance tracking Four-year typical standby life when installed before expiration date Philips code M5070A for authentic replacement verification