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A 10-Year Battery for AirTag

elevationlab.com

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Re: A 10-Year Battery for AirTag

#2
That is not how batteries work. Batteries drain even under minimal usage.

My bet is that in 2/3 years this device will stop working already.

Just change the batteries if you AirTag once a year. Especially if you are using an AirTag to keep watch over 10.000 dollar equipment.

Re: A 10-Year Battery for AirTag

#3
This solution makes the AirTag bigger. Might be okay for a photo bag, it's quite cumbersome for car keys and dogs. Besides, your phone will warn you when the battery is getting low. I always keep a couple of 2032 batteries on hand and soon as I get the low battery warning I just pop a new one in.

Re: A 10-Year Battery for AirTag

#4
Not a bad price, but it does require an existing Airtag.

Ten years is a very long time in tech. I wouldn't be confident that the Airtag protocol will be functioning in 2035, and there are already rumors of a new Airtag and possibly a newer protocol coming up.

Re: A 10-Year Battery for AirTag

#5
Brilliant, I just ordered a couple. But I bet that case muffles the sound when the AirTag decides to sing you the song of its people. This might be a boon to AirTag stalkers who are too lazy or unskilled to disable the sound and upgrade the battery life.

Re: A 10-Year Battery for AirTag

#6

That is not how batteries work. Batteries drain even under minimal usage. My bet is that in 2/3 years this device will stop working already. Just change the batteries if you AirTag once a year. Especially if you are using an AirTag to keep watch over 10.000 dollar equipment.

Lithium batteries (like the 1.5V energizer suggested) have extremely low self discharge. The reason why lithium batteries are used for long life is because you can actually reliably count on them to not self discharge after 20 years. As long as the mAh is 10x the coin cells they use, I’d totally believe the 10 year statement.

Re: A 10-Year Battery for AirTag

#7
post #3

This solution makes the AirTag bigger. Might be okay for a photo bag, it's quite cumbersome for car keys and dogs. Besides, your phone will warn you when the battery is getting low. I always keep a couple of 2032 batteries on hand and soon as I get the low battery warning I just pop a new one in.

They talked about this in the article. It is for bigger items like RVs and camera bags that you also don't interact a lot on a daily basis.

Re: A 10-Year Battery for AirTag

#8
post #3

This solution makes the AirTag bigger. Might be okay for a photo bag, it's quite cumbersome for car keys and dogs. Besides, your phone will warn you when the battery is getting low. I always keep a couple of 2032 batteries on hand and soon as I get the low battery warning I just pop a new one in.

>Might be okay for a photo bag

Yes that's what its for

Re: A 10-Year Battery for AirTag

#10

That is not how batteries work. Batteries drain even under minimal usage. My bet is that in 2/3 years this device will stop working already. Just change the batteries if you AirTag once a year. Especially if you are using an AirTag to keep watch over 10.000 dollar equipment.

Here [0] is the datasheet for the batteries used. 25 year shelf life is spec'd.

I have personally run these cells buried underground, and gotten 4.5 years out of 4 of them, though my application is just for fun and likely not as power conservative as an AirTag.

[0] https://data.energizer.com/pdfs/l91.pdf

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