The HeartSine Pad-Paks contain both electrodes and batteries in one cassette.  
 
This means, there is only one expiring component to worry about, and also after an event you can be sure that the device is completely refreshed ready to be used again in the event of an emergency.
 
Suitable for use with the HeartSine defibrillator series: the PAD 350P, the PAD 360P, and the PAD 500. The cartridges have a shelf life of four years from the date of manufacture and provide 60 shocks or continuous monitoring over a period of six hours. Installation is straightforward.
 
There is just one click required to install the cartridge.