The HeartSine Samaritan batteries are combined with the electrode pads, so these will always expire at the same time - making maintenance easy for the owner. The Pad-Pak displays the expiry date on the item. 

Service Indicator 

All three of these units have a service indicator. This indicator should be flashing green, approximately every 5 seconds. If the status indicator is not flashing, a problem has been detected by the device. 

The main reason the indicator will not flash is due to an expired Pad-Pak. You should check the Pad-Pak and change it if the expiry date has been exceeded. 

If the unit is still flashing, the device will provide a warning message when turned on for use. 

Pad-Pak Replacement 

To replace the Pad-Pak, place the device and the Pad-Pak on a flat surface. Push the Pad-Pak in and listen for the 'click' sound to ensure it has been inserted correctly. Once the Pad-Pak is installed properly, the service indicator will begin to blink in the colour green again, approximately every 5 seconds.