Philips Heartstart MRX Battery – M3538A $456.50 ***Discontinued*** • The Lithium Ion Battery provides the energy necessary to operate the HeartStart MRx monitor/defibrillator. • MFG # M3538A Out of stock Email when stock available SKU: C418-0012 Category: Batteries Related Products Stryker 6500 & 6506 Power Pro XT Cot SMRT Battery – Non OEM $425.00 Add to cart Carefusion ReVel Lithium Ion Battery – Rechargeable $487.63 Add to cart Lifepak CR Plus Charge-Pak w/ 2 Sets of Electrodes & Battery $391.00 Add to cart Sapphire MT Infusion Pump External Battery Pack $205.47 Add to cart