The Philips HeartStart FR2 battery M3863A includes a 3-year warranty and 5-year shelf life. The battery typically lasts 3 years installed keeping your Philips FR3 AED in "ready to use" condition as well as running mission-critical self-tests.
Install by Date
Philips FR2 battery M3863A has a 3-year Stand-By life (life while installed in the AED and in stand-by mode) so it is important to record the date you install the battery in your AED. Your 3-year life begins at the installation date as long as the battery is installed before the "Install Before" date as shown below.