Your AED defibrillator is only as reliable as its consumable components. Electrode pads and batteries are the two most critical parts that require regular replacement, and letting them expire could mean the difference between a device that saves a life and one that fails when it’s needed most. Heartsafety Solutions stocks replacement parts for all major AED brands to ensure your device is always ready.

Understanding Electrode Pads

Electrode pads are the adhesive pads that are placed on a patient’s chest during a cardiac emergency. They serve two functions: they allow the AED to analyse the heart’s rhythm, and they deliver the electrical shock if needed. Over time, the conductive gel on the pads dries out, which can reduce their adhesion and effectiveness. This is why pads have an expiry date, typically two to five years from manufacture, depending on the brand and model.

Adult vs Paediatric Pads

Most AEDs come with adult electrode pads as standard. For environments where children may be present — such as schools, sports clubs, and community centres — paediatric pads or a universal pad system is recommended. Some modern AEDs, like the Primedic myPAD Core, feature universal pads that automatically adjust the energy level for the patient, eliminating the need for separate child and adult pads.

Understanding AED Batteries

AED batteries power the device’s computer, voice prompts, display, and the defibrillation shock. Even when the AED is not in use, the battery powers regular self-tests and maintains the device in a ready state. Batteries have a finite life, typically ranging from four to seven years for standby use, but this can be significantly shorter if the device is used or if it performs frequent self-tests.

How to Know When It’s Time to Replace

Most modern AEDs make it straightforward to know when replacement is needed. A flashing warning light, an audible chirping sound, or a change in the status indicator from green to red typically signals that pads or batteries are approaching expiry or have been depleted. Your monthly maintenance checks should always include verifying the status indicator and checking the expiry dates printed on the pad and battery packaging.

Ordering Replacement Parts

Heartsafety Solutions stocks replacement pads and batteries for all the major AED brands we supply, including Physio-Control, Philips, Primedic, ZOLL, Cardiac Science, and Defibtech. We recommend ordering replacements well in advance of expiry dates to avoid any gap in readiness.

The Cost of Complacency

The cost of replacement pads and batteries is minimal compared to the cost of a device that fails in an emergency. Building replacement schedules into your AED maintenance plan ensures continuity and compliance. For organisations on a rental plan, replacement parts are typically included in the monthly fee, providing complete peace of mind.

Keep your AED ready to save lives. Browse replacement parts or contact our team for assistance finding the right components for your device.