How long does an AED battery last? Replacement frequency explanation

How long does an AED battery last? Replacement frequency explanation


Last time, explanation about “what an AED is” was given. It was supposed to give further understanding about the necessity of AED.

This time, I would like to give information about how to manage AEDs after being installed in offices and factories.

There are several types of AEDs. The lifetime and prices vary depending on the models.

This time, we shall give explanation about the AEDs we handle which are compatible with English, Japanese, and Vietnamese audio instruction bult-in voice.





AED stands for “Automatic External Defibrillator”.

I suppose it’s somehow a formal and specific term, but as the name suggests, AED is “a device that automatically removes fibrillation”.

I would like to give further explanation about “fibrillation” in more details from the next time.

But when the heart has a spasm for some reason, the AED automatically analyzes the condition of the heart and determines whether an electric shock is necessary.

It is an easy-to-use device, and even ordinary citizens (non-medical personnel) without medical knowledge can perform lifesaving activities by following the in-built voice prompts.

Sudden cardiac arrest can happen to anyone at any time.

Deepening your understanding of AEDs, even a little, might help save one precious life.

Our Services – Automated External Defibrillator (AED)


Parts require to be replaced in AED

First and foremost, the warranty period of the AED body is 5 years. There are differences among manufacturers.

However, they are generally in the same condition. As it is a life-saving device, it would be meaningless if the AED reaches the end of self-life and can not be used.

Hence, ALSOK recommends replacing the AED after the 5-year warranty period.

Additionally, the battery and electrode pads built-in the AED also have expiration dates. Hence, they require to be replaced as well.


AED Battery self-life


The AED is not connected directly to a power supply, but powered via a battery attached.

Even battery is not used for lifesaving, it must be replaced as it is constantly energized and worn out so that AED can be used at any time. Our AED batteries have a self-life of 40 months.

During the 5-year warranty period, only one replacement is required.


When replace other parts of the AED

Besides batteries, it is also necessary to replace the electrode pads. Electrode pads are necessary parts for electrocardiogram analysis and electric shock.

A gel-like sticky material is used on the contact surface with the body.

After the expiration date, it will not be able to be attached to the body properly and it impossible to perform correct electrocardiogram analysis and electric shocks.

As electrode pads of AED we are providing has a self-life of 20 months. Thus, the pad replacement should be conducted twice during five years.


Is the replacement required once used?

Once used, only electrode pads require to be replaced. As I wrote above, the electrode pads are made of sticky materials.

Therefore, the stickiness shall be weakened after being used, and the AED may not work well if you use the pads for a second time.

There is no necessity to replace the AED body and battery after each use. Basically, its battery has a capacity of from 100 to 200 shocks.


How long does an AED battery last? Explanation of replacement frequency [Summary]

AED is not a one-time purchase. Consumables require to be replaced and maintained periodically so that they are available to be used at any time.

It is important to properly manage the replacement schedule and keep the product ready for use at any time. ALSOK also manages the consumable replacement schedule for your AED.


Please contact us if you have any inquiries about AED installation.


Delivery as soon as possible after ordering from the inquiry, it is possible to respond quickly to unforeseen situations.

In addition, it is also possible to set the device voice with bilingual languages from 3 available languages (English, Japanese and Vietnamese)

For further information, please contact the nearest ALSOK office.


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ALSOK are Japanese company with over 50 years of experience about security services. Established in Viet Nam since 2009, we provide the total security solutions for customers: both equipment and security guards.