The Intellisense Battery for the Powerheart G3 AED comes with a four-year factory warranty for performance and a five-year shelf life prior to installation. The Powerheart G3 AED performs a daily self-test for presence and functionality of the battery to ensure that your defibrillator is ready for a sudden cardiac arrest emergency. This Intellisense lithium battery is for use in Powerheart AED G3 9300E, 9300A, 9390E, and 9390A