HeartSine samaritan Adult PadPak Electrodes and Battery. The Adult Pad-Pak Set for Heartsine Defibrillators includes one defibrillator battery and a pair of adult defibrillation electrodes. Convenience in checking the expiration date for defibrillation accessories. With a 4-year lifespan, the pad-pak has a specific expiration date that ensures smooth operation. Each Adult Pad-Pak Set can deliver up to 60 shocks with 6 hours of continuous use. Suitable for use with Heartsine models Samaritan 350p, Samaritan 360p, and 500p.