How do I know when my AED’s battery needs to be replaced?

Your AED Battery may need to be replaced if any of the following occurs:

  • The AED beeps
  • The AED fails self-checks
  • The AED Has a failing status indicator (red light or mark)
  • The AED does not have enough power to operate

The life of an AED battery can vary depending on the manufacturer. Most AED batteries need to be replaced every 2 – 5 years. 

8 Responses to “How do I know when my AED’s battery needs to be replaced?”

October 16, 2019 at 7:34 am, Phyllis J. Patterson said:

Where is the AED battery located on the machine?


October 16, 2019 at 7:41 am, AED Superstore said:

Hi Phyllis,

It depends on the AED you have. Give our customer service department a call at 1-800-544-0048 and they will be more than happy to help you with any questions you may have about your AED. Thanks!


June 09, 2021 at 7:53 am, Bill James said:

Our fire department uses Zoll AED Plus’s. Last night we ran a full arrest and shocked the patient 4 times. Wondering if we need to replace batteries, don’t want to wait for an equipment failure.


June 16, 2021 at 11:44 am, AED Superstore said:

Hi Bill, We’re sorry to hear the patient didn’t make it. If the indicator on the ZOLL AED is showing a green check-mark then your unit should be fully functional and able to rescue. There are many reasons a patient may not respond to a shock – most having to do with the physiology of the patient’s heart and time from drop to shock. If you feel you should change the batteries, that is done easily enough on the ZOLL AED Plus as it uses 10 consumer Duracell Lithium 123 batteries. They are available for purchase here.


October 21, 2021 at 2:12 pm, Sarah Graven said:

How long does the LifePak 1000 AED batteries last? We’ve had it since 6/12/2019. Luckily we haven’t had to use it. The window indicator has 4 bars and reads OK. Will the bars go down one by one? Should they be replaced routinely?


November 24, 2021 at 8:55 am, AED Superstore said:

Hi Sarah,

The LIFEPAK 1000 non-rechargeable battery should be good for 5 years if unused in your AED.


March 25, 2023 at 9:31 am, Leslie pelkofer said:

If the AED is used in a resuscitation, do lithium 123 batteries automatically need to be replaced like the CPR pad does?


April 13, 2023 at 9:06 am, AED Superstore said:

You may not have to replace the batteries right away, but please understand that they have been depleted and a spare set should be on hand.


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