What You Need to Know to Maintain a Defibrillator Battery

A modern Automated External Defibrillator (AED) contains a lithium-ion battery that is very easy to maintain. These batteries last for about 2 to 7 years with simple storage. For example, you may leave the device in a closet with the battery connected to the device. Here is how to replace and maintain it.

What You Need to Know to Maintain a Defibrillator Battery

1 - How Long Do Batteries Last?

Lithium-ion batteries typically last for between two and five years when not in use. How long they last depend on the type of battery and how they are stored, and how often they are used.

2 - Can a Battery Be Recharged?

There are no portable defibrillator batteries that can be charged in the field. You will have to change the battery in the device. Newer portable defibrillator models have removable batteries that can be replaced by the user.

3 - Determining Shelf Life

At the time of manufacture, the device will show the service life of its battery. The battery should be replaced when this service life has expired. The service life should be specified in the manual that comes with the device.

Defibrillator Battery Maintenance

1 - Use the Device Regularly

The best way to maintain the battery for usage is to use the device regularly and keep it charged.

2 - Charge the Battery

Charge the device’s battery often, regardless of whether or not it has been used. (See The Battery Charger below.)

3 - Keep the Device Clean

The device should be kept clean. The outside of the device can be cleaned with a soft, damp cloth.

4 - Store the Device Properly

The best place to store the device is in a dry place. This is to keep the device safe and in good working order.

​5 - Store the Battery Properly

You should store the battery separately from the device. Also, the battery should always be protected from extreme temperatures.

6 - Do not Overcharge the Battery

You should never charge the battery above the maximum recommended voltage. Charging the battery above a set voltage will reduce the battery’s service life.

Why Maintaining a Defibrillator Is Critical

AEDs should be maintained regularly because they save the lives of people who would otherwise die from cardiac arrest. The devices are critical in the fight against heart disease, a leading cause of death in the United States.

​The devices are safe and have advanced features that help the user to administer the right shock to the right person.


In this article, we discuss how to maintain a defibrillator battery. We also discuss the life expectancy of lithium batteries and the best ways to store them.

The life of the defibrillator battery is dependent on how often it is used, how it is stored, and how clean it is. Maintaining the battery is one of the main ways to ensure that it works when you need it most. We hope this article has given you some useful tips on how to maintain your defibrillator and how to keep the battery charged.

If you need more information on AED maintenance, come to Restart the Heart. We supply AED pads and batteries for all brands. Order online today!