Powerheart® AED G3 Plus The flagship Cardiac Science automated external defibrillator (AED) that features Rescue Ready®, RescueCoach™, and STAR® biphasic technology to make your rescue as simple as possible. Rescue Ready® technology that self-checks all main AED components (battery, hardware, software, and pads) daily. The AED completes a partial charge of the high-voltage electronics weekly, and a full charge monthly. East of Use – Clear voice prompts and a helpful text screen guide the user through the entire rescue operation. Advanced Technology – Rescue Coach™ and CPR metronome functionality pace users through chest compressions. In addition, our proprietary STAR® biphasic technology calculates electrical impedance and escalates energy to deliver therapy at an appropriate higher level should a patient require a second shock. Assurance – Cardiac Science stands behind our Powerheart AED G3 Plus with a 7-year warranty, among the longest in the industry, and a 4-year full battery operational replacement guarantee.