HeartSine samaritan Pad-Pak, Pediatric (includes one set of defibrillation pads and battery). Incorporates one expiration date for worry free maintenance; based on a 4-year shelf-life.. Provides over 6 hours of continuous monitoring or 60 shocks. The PAD-PAK-02 works with the PAD 350, 360, and 450 models. Pediatric-Pak is indicated for use on children between 1 and 8 years of age or up to 55 lbs (25 kg). HeartSine brand AEDs operate on Pad-Paks only. Best to include Pediatric Pad-Pak for most businesses..