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Automated External Defibrillators (AEDs) are remarkable devices designed to save lives during sudden cardiac arrest (SCA) emergencies. 

These portable electronic heroes are strategically placed in public spaces, homes, and workplaces, poised to deliver life-saving shocks that can mean the difference between life and death. 

In this comprehensive guide, we will explain what AED Batteries and Pads are and arm you with in-depth insights to ensure your AED is always primed and ready to respond when a life is hanging in the balance.

Chapter 1: The Heart of an AED – AED Pads 

AED pads may seem deceptively simple as adhesive electrodes, but these small yet crucial components are responsible for assessing the heart’s electrical activity, deciding whether a shock is needed, and delivering it with precision.

Types of AED Pads: Adult vs. Pediatric 

Understanding the difference between adult and pediatric AED pads is essential. Each serves a specific purpose, tailored to the age and size of the patient. 

Adult pads are designed for patients over 8 years old or weighing more than 55 pounds, while pediatric pads are intended for younger or smaller patients. 

AED Pad Shelf Life and Expiration Dates

AED pads, despite their importance, have a finite lifespan. They come with an expiration date, typically ranging from 2 to 5 years, depending on the manufacturer and model. 

This shelf life is determined by factors like the gel’s conductivity and adhesive properties, which can degrade over time. It’s critical to routinely check the integrity and expiration date of these pads to ensure they perform optimally when called upon.

Visual Inspection: Ensuring Pad Integrity

Visual inspections are your first line of defence in ensuring the effectiveness of AED pads. Regularly examining AED pads for signs of wear, damage, or compromised packaging is crucial. 

Look for any visible cracks, tears, or separation between the electrode and the backing. If you detect any issues with the pads during visual inspection, immediate replacement is necessary to guarantee their effectiveness during use.

Chapter 2: The Power Source – AED Batteries

AED batteries are the lifeline of the device as they keep the device running smoothly. Without a reliable battery, even the most advanced AEDs are ineffective.

Types of AED Batteries: Non-Rechargeable vs. Rechargeable 

AED batteries come in two primary types: non-rechargeable (single-use) and rechargeable. 

Understanding the difference between these battery types is crucial, as it influences not only your AED’s operational capabilities but also your long-term maintenance strategy.

  • Non-Rechargeable Batteries: These batteries are designed for single-use and must be replaced once depleted. They are typically sealed within the AED’s battery pack, ensuring a hassle-free and maintenance-free experience until replacement becomes necessary.
  • Rechargeable Batteries: Some AEDs are equipped with rechargeable battery packs that can be recharged after use. These rechargeable batteries offer convenience and cost savings in the long run but require more diligent maintenance and monitoring.

Understanding AED Battery Shelf Life

AED batteries have a finite shelf life, just like AED pads. The shelf life of AED batteries typically ranges from 2 to 5 years, depending on factors such as the battery type and manufacturer. 

Chapter 3: Maintenance and Best Practices 

Effective maintenance is the backbone of AED readiness. In this section, we provide practical guidelines to ensure that your AED is consistently in peak condition.

Creating a Maintenance Schedule

Learn why creating a structured maintenance schedule is vital to prevent unexpected equipment failures and ensure that your AED is always ready for action. A well-organized maintenance plan can help you stay ahead of issues and keep your AED in optimal working order.

Regular visual inspections are your first line of defence against potential issues. Visual inspections should be conducted as part of routine maintenance, ensuring that your AED is in pristine condition.

The Training Factor: Ensuring Competence 

Recognize the significance of proper training for individuals responsible for AED maintenance. Well-trained personnel are more likely to identify and address issues effectively. Training ensures that your maintenance efforts are carried out correctly, enhancing the overall effectiveness of your AED program.


AED pads and batteries may not always take center stage during a rescue, but they are undeniably the heart and soul of these life-saving devices. 

Regular maintenance, vigilant attention to expiration dates, and ensuring compatibility are paramount to ensure that your AED is always primed for action during a sudden cardiac arrest emergency. 

By prioritizing the upkeep of these vital components, you can maximize the chances of a successful intervention, save lives, and make your AED program truly effective. It’s not just about having an AED; it’s about ensuring that it’s always ready to fulfill its life-saving mission.