Defibtech Lifeline Pedi Pads DDP-200 are for use on patients less than 8 years old. Defibtech Pediatric AED Electrode Pads have a lifespan of 2 years. Each set of pads ships with the pads expiration date printed on the pads package. Defibtech AED Pads are intended for a single use and for that reason it is recommended to purchase and have a replacement set of pads stored with the AED and ready for use.