AirTags are basically an essential accessory for iPhone users who want to keep track of things like their keys, wallet and backpack. While it’s easy enough to replace the battery in both versions of the AirTag, you may not want to have to rush to do so at the end of the battery’s roughly two-year lifespan. That’s where Elevation Lab’s extended battery case for the AirTag comes in, and it’s heavily discounted right now: it’s 30 percent off and down to $16.

The case usually sells for $23, so that’s a 30 percent discount. It’s not the first time we’ve seen this deal, but it’s a pretty decent one all the same.

Elevation Lab

Elevation Lab says its AirTag case can extend the battery life of the tracking device to 10 years, and now it’s on sale.

This is arguably one of the more useful AirTag accessories around for certain use cases. It won’t exactly be helpful for an AirTag that you put in a wallet or attach to your keys, as it’s too bulky for such a purpose — and it doesn’t have a hole for a keyring anyway. Still, if you’re looking for an AirTag case that you can place in a suitcase or backpack and not have to touch for years, this could be the ticket.

Elevation Lab says that, when you place a couple of AA batteries in the case, it can extend the tracker’s battery life to as much as 10 years (the brand recommends using Energizer Ultimate Lithium batteries for best results). The AirTag is slated to run for over a year on its standard CR2032 button cell.

The case gives the AirTag more protection as well. It’s sealed with four screws and it has a IP69 waterproof rating. What’s more, it doesn’t ostensibly look like an AirTag case, so someone who steals an item with one inside is perhaps less likely to realize that the object they pilfered is being tracked.

There are some other downsides, though. Since the AirTag is locked inside a case, the sound it emits will be muffled. Elevation Lab says the device’s volume will be about two-thirds the level of a case-free AirTag. However, the second-gen AirTag is louder than its predecessor, which should mitigate that issue somewhat.

Follow @EngadgetDeals on X for the latest tech deals and buying advice.