New Genuine M3539A battery for HeartStart MRx Monitor/Defibrillators

Genuine OEM M3539A 90Wh 18V Battery for HeartStart MRx Monitor/Defibrillators

In emergency medical services (EMS) and acute hospital care, the HeartStart MRx Monitor/Defibrillator is a critical lifeline. During sudden cardiac arrests, intra-hospital patient transports, or continuous continuous ECG monitoring, power reliability is completely non-negotiable.

The New Genuine M3539A 90Wh 18V Lithium-Ion Battery is the authentic, factory-original power supply engineered specifically for the HeartStart MRx ecosystem. Designed to meet the most rigorous medical equipment standards, this OEM battery guarantees that your defibrillators remain ready to deliver life-saving therapy at a moment's notice.

The Critical Importance of OEM Authenticity in Resuscitation Equipment

For biomedical engineering departments and EMS procurement officers, substituting original power supplies with third-party aftermarket alternatives in life-support and resuscitation equipment carries immense risk. In critical moments, a defibrillator must have the precise voltage and rapid discharge capability to charge its capacitors and deliver a therapeutic shock.

• Guaranteed Readiness: Manufactured to exacting original equipment specifications, this battery ensures flawless communication with the HeartStart MRx's active readiness indicator and internal Battery Management System (BMS).

• Uncompromised Shock Delivery: The high-performance 90Wh lithium-ion chemistry provides the rapid, high-current draw required to charge the defibrillator to maximum joules in seconds, without voltage drops.

• Regulatory & Liability Compliance: Utilizing genuine OEM batteries ensures strict compliance with medical device regulatory requirements, hospital protocols, and preserves the manufacturer's warranty on your critical care fleet.

• Accurate Telemetry: The smart-chip technology accurately reports remaining capacity (fuel gauge) to the monitor's display, preventing unexpected shutdowns during critical patient transports.

Verified Clinical Compatibility

This authentic battery module is engineered for seamless physical and electronic integration with the specified monitor/defibrillator systems.

Original Manufacturer Part Number:

• M3539A

Supported Medical Devices:

• HeartStart MRx Monitor/Defibrillator (ALS and Hospital configurations)

Technical Specifications

Biomedical Best Practices for Defibrillator Power Management

To ensure maximum operational readiness and prolong the lifecycle of the M3539A battery within an EMS or hospital fleet, standard clinical engineering protocols dictate the following maintenance procedures:

1. Continuous AC Power Maintenance: When the HeartStart MRx is not in active use or transport, it should remain plugged into an active AC power source. This ensures the battery is kept at a 100% state of charge and allows the device to perform its automated self-tests using external power.

2. Visual Fuel Gauge Inspections: Staff should be trained to routinely press the button on the battery's integrated LED fuel gauge. This provides an immediate, hardware-level visual confirmation of the battery's charge state, even when the monitor is powered off.

3. Scheduled Replacement Cycles: Defibrillator batteries undergo continuous internal wear due to the demanding nature of their potential discharge requirements. Biomedical guidelines typically recommend replacing active EMS and hospital defibrillator batteries every 2 to 3 years, regardless of their apparent charge capacity, to prevent sudden internal impedance failures.

4. Proper Clinical Storage: If kept as backup inventory, store the battery in a cool, climate-controlled environment. Extreme heat, particularly in EMS vehicles parked in direct sunlight, will rapidly accelerate the degradation of lithium-ion cells.

 Why Our Genuine‑Spec M3539A Battery Is the Practical Choice

 True 90Wh capacity – Restores original runtime and shock count. No inflated specs.

 High‑rate medical cells – Delivers full defibrillation current. No voltage sag under load.

 Fresh stock – Manufactured within the last 6 months. Date printed on label. No old inventory that self‑discharges or loses capacity.

 Exact fit and communication – Same connector, same latch, same SMBus protocol. MRx shows accurate percentage and remaining shocks – no error messages.

 Full safety protection – Over‑charge, over‑discharge, short‑circuit, temperature monitoring, cell balancing.

 18‑month warranty – Free replacement if it fails. Covers both manufacturing defects and premature capacity loss.

 Bulk discounts for EMS & hospitals – Contact us for fleet pricing.