Powerheart® G3 AED Defibrillation Pads Part No. 9131-001 Powerheart G3 defibrillation pads are stored connected to the AED; a technology developed by Cardiac Science to expedite the rescue process and help ensure electrodes are Rescue Ready. Pads may be placed in either position on the chest to reduce confusion and save time during a rescue. These pads are compatible with all Powerheart G3 series AEDs (models 9300 and 9390). These pads have a two year shelf life.