<b>Product</b><br>Replacement lithium battery pack for Heartstart HS1 and MS1 automated external defibrillators (AED). Compatible with original connectors to restore device readiness quickly.<br><br><b>Applications</b><br><ul><li>Compatible with Heartstart HS1 and MS1 AED models</li></ul><br><br><b>Other characteristics</b><br><ul><li>Lithium battery pack, sealed design</li><li>Connector compatible with Heartstart HS1/MS1</li></ul><br><br><b>Electrical specifications</b><br><ul><li>Voltage: 9 V</li><li>Capacity: 4200 mAh</li></ul><br><br><b>Customization</b><br><ul><li>JINWO smart Li-ion batteries can be customized to meet unique specifications</li><li>Custom label available</li><li>Custom firmware available</li><li>Performance option configurations available</li></ul><br><br><b>Product Details</b><br>Multiple product images are provided showing the battery pack, connector and packaging.<br><br><b>Technical specifications</b><br><ul><li>Applications: Heartstart HS1, MS1 AED</li><li>Type: Lithium Battery Pack</li><li>Voltage: 9 V</li><li>Capacity: 4200 mAh</li><li>Customization: custom label, custom firmware, performance options</li></ul>