IntelliSense® lithium AED Replacement Battery from Cardiac Science® for Powerheart G3 9300A, 9300E, 9390A, and 9390E AEDs. Cardiac Science recommends to always have a spare battery stored with the AED, as well as adult electrodes and pediatric electrodes that are up to date. 4 Year Warranty This battery is manufactured by Cardiac Science® for use in their AED units. This battery replaces the 9146-101, 9146-102, 9146-202, and 9146-302.