Although they last a long time, it is vital that you ensure that the essential parts that make up your AED are in perfect working order. Defibrillator pads and batteries will last at least a couple of years (or more, depending on the brand), so you need to remain vigilant in their proper maintenance – if and when the time comes that it needs to be used, you don’t want to only then realise that the defibrillator battery is low (or even completely drained).
Pads -> With AED pads, replacement is usually required every 2 years. However, this may be longer on some models such as the HeartSine (4 years), or Zoll (5 years).
Batteries -> The minimum stand-by time for most defibrillator batteries is two years. Like the pads, this can differ depending on the model and brand, and for some it is four years or more.
Although a unit’s batteries are not mandated to be changed at a particular date, an automated warning will occur when the battery approaches its low charge level and it may be useful to know that there is always a shock delivery capability left in the battery at the time of the first low battery warning. Some models of defibrillators have LED light indicators where the amount of battery charge left, can be easily identified.