AED electrodes provide cardiac rhythm analysis and shock delivery. The electrodes can only be used once and have a shelf life of about 1.5 – 2 years. The electrodes have a adhesive gel that ensures that the electrodes stay in place during CPR. After about a 1.5 – 2 years this gel starts to dry out and will therefore no longer provide the proper adhesion.
Every defibrillator-battery has a different lifespan. The lifespan of the battery depends on the usage of the defibrillator. When the defibrillator is used regularly, the battery will logically lose power a lot faster than when it is on standby for years. The lifespan also depends on type of defibrillator. The defibrillator regularly executes a self-test. During this self-test the defibrillator measures the battery voltage. The defibrillator automatically indicates when the battery is due for replacement.