Philips HeartStart FRx / OnSite / HS1 AED 4-Year BatteryThis Replacement Battery is compatible with Philips HeartStart FRx, HeartStart OnSite, and HS1 AEDs. Capacity: Minimum 200 shocks or 4 hours of operating time (EN 60601 2 4: 2003) Install by date: Battery is labeled with an install by date of at least 5 years from date of manufacture Standby life: Four years typical when battery is installed by the install by date (will power the AED in standby state within the specified standby temperature range,
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