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AED Battery Life

When do I need to replace the battery?

Battery life can vary depending on the manufacturer and battery rating. Some manufactures sell multiple battery options with different battery life. All batteries will have a specified life expectancy; most will need to be replaced every 2–5 years. It is crucial you know if your AED battery replacement date is approaching so you acquire a new battery before it expires.

How do I determine the life expectancy of my battery?


Battery Date 

The first step to determining you batteries life expectancy is by inspecting the battery itself and locating the date stamp(s).

There are three different dates frequently used by manufactures:

  1. Manufactured Date
  2. Install By Date (shelf-life)
  3. Expiration Date.

 Manufactured Date: This is the date the battery was produced at the manufacturing facility. This is NOT the expiration date. Note: Some batteries require use within 5-7 years of production.

 Install By Date: This date represents the shelf life of a battery.

This date is NOT an expiration date!

To ensure your battery maintains charge throughout its guaranteed life expectancy, it must be installed prior to the install by date. It is important that you record the installation date on the AED maintenance sheet and inspection tag, additionally you can write on the battery itself for extra precaution. As long as the installed date is prior to the install by date, you can determine the expiration date by adding the manufacturer's specified lifespan to the installation date (normally stated in years).

Expiration Date: Normally the expiration date is tracked from the day of installation. However if an expiration date is shown, one should replace the battery prior to the printed date.


AED Battery Replacement Tips

  • Routine Checks – Perform regular checks of your AED device(s) as per manufacturer recommendations. This will help ensure the device is “rescue ready” and that all of the disposables are installed and functioning correctly.
  • Recycle - Most AED batteries are Lithium based and should be recycled as per your local laws require. Lithium based batteries should never be placed in the trash as a puncture could cause a fire hazard.
  • Replace: Visit to shop by brand to find the right replacement battery for your AED machine.