replace smoke detector battery – first alert wired smoke alarm

Changing a smoke detector battery is at least a yearly task. Here is how to change out the battery of a wired smoke detector in 20 seconds.

Amazon Basics 4-Pack 9 Volt Alkaline Everyday Batteries, 5-Year Shelf Life
https://amzn.to/3qVyNVr

First Alert BRK 3120B Hardwired Photoelectric and Ionization Smoke Alarm with Battery Backup, Dual Sensing Smoke Alarm, 1-Pack
https://amzn.to/3JrZ3wO

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30 thoughts on “replace smoke detector battery – first alert wired smoke alarm

  1. Thank you! It’s 1am in the morning and it’s freaking my dog out! It’s still beeping though and I don’t have any of those type of batteries lol! Has to wait til stores open!!! Lol!😂😂

    1. Alway in the wee hours of morning!
      Sorry the alarm is freaking out your dog, hope you get it fixed!

  2. you are goated for this you saved my brain cells from the infamous beeping in the night !

    1. I have seen the batteries in a compartment on the underside of the smoke detector – you can see it once you take it off the wall. Hope that helps.

  3. Thank you! This is the best how to video I’ve ever seen, no 20 minutes of unboxing and unnecessary yapping. Had never switched out a battery in this particular style of alarm. This was quick and easy to follow, appreciate you!

    1. Wish I could agree. I’m sitting with the entire device on my lap. Why? Because I cannot get the battery to “pop” back in 😢

  4. Thank you for making this video. I could not, for the life of me, figure out how to put the new battery in.
    Yes, I was dumb and removed the old one without looking at how it was positioned. Lol. I will remember to do this next time ♡

  5. Thank you SO much! Just got home from dropping my littles off at school and the darn thing was beeping. And I couldn’t figure out how to get the new battery back in until I watched this. 💯🌟

  6. This was helpful. I noticed the alarm began chirping since last night and to change it this morning. I had no idea how to open it until watching this.

  7. Thanks for getting straight to the point. Thanks to your content, I got it done and now can enjoy my space without the chirping.

  8. Only if we had that type of smoke detector we have two down in our house the one downstairs and the one in my room

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