The Philips HeartStart Battery M5070A provides dependable AED power. It can deliver at least 200 shocks or run for up to 4 hours. It features a five-year shelf life and is designed to provide up to four years of installed use.

This HeartStart battery is compatible with:

• Philips HeartStart FRx AED
• Philips HeartStart OnSite AED

Philips HeartStart AEDs notify users of a low battery with chirps and a flashing light. Once you install a new battery, the alerts stop. The device then shows a normal green readiness signal.

How to Replace the Philips HeartStart M5070A Battery

Replacing the battery in a Philips HeartStart OnSite or FRx AED is simple. Insert the new battery with the arrows pointing down. The device will then run a self-test and provide voice instructions. Once complete, the AED confirms readiness with a “Ready for use” message.

Be sure to record the new battery’s end date to help maintain AED readiness. An AED management program helps you easily track battery status, inspections, and replacement schedules.

The Philips M5070A is the authorized replacement battery for the Philips HeartStart FRx (model 861304) and Philips HeartStart OnSite (HS1, M5066A). It delivers a 4-year installed life and a 5-year shelf life from manufacture date. The battery powers daily self-tests, weekly status checks, and full rescue cycles. This page covers exact specifications, replacement timing, install steps, and how to verify you’re buying authentic Philips inventory from an authorized U.S. distributor.