• For the HeartSine Samaritan PAD 350P, 360P and 500P defibrillators • Electrode Pad Lifespan: 4 years The HeartSine Samaritan Adult Pad-Pak is suitable for patients over 8 years old/25kg in weight. It contains a battery and a pair of electrode pads, in one simple to replace cartridge component. The HeartSine Samaritan Paediatric-Pak cartridge features a 4 year shelf life and can be easily identified against the standard adult cartridge with its difference in colour and shape.