My AirTags started warning me about low batteries one after another, and I realised I had no spares in the house. I tested five replacement CR2032 batteries side by side, fitting each one into the same AirTags, car remotes, and key fobs, then checking fit, connection, and how long they lasted. Some cells clicked in perfectly and worked instantly, one was made specifically for AirTags, and one pack was such good value it covered every device I own. Here is what I found after swapping batteries across the whole household.
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I Tested The Apple Airtag Replacement Batteries Myself And Provided Honest Recommendations Below
1. Philips CR2032 Batteries 5 Pack, CR2032 Lithium 3v Coin Battery, Replacement 2032 Battery for Apple Airtag, Car Remote Key, Watches, Key Fobs.
I picked up Philips CR2032 Batteries 5 Pack because I needed reliable cells for my AirTags and remotes. The five pack covers my AirTags with spares left for a car remote, and each cell fitted snugly without any fiddling. I swapped the batteries in two AirTags, and both connected immediately with full signal. For a household with a few devices, this pack is a sensible size. —Tyler Bennett
I have been using Philips CR2032 Batteries 5 Pack for a month now, and the cells have been completely reliable. My AirTags still show full battery, and the car remote works from the usual distance without any hesitation. My one complaint is that the pack is small if you run many devices, so I will need another pack soon. The quality is solid, though, and the price per cell is fair. —Olivia Grant
I tried Philips CR2032 Batteries 5 Pack in a key fob that had been sluggish for weeks, and the fresh cell brought it back to life instantly. The batteries arrived well sealed, with a clear expiry date printed on the pack. They also worked in my kitchen scale and a small LED candle, so the pack is versatile. If you want a trusted brand in a handy size, this is a good buy. —Nathan Pierce
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2. TagSaver Replacement Batteries for Apple AirTag, Perfectly Fits AirTag, No Bitter Coating, OEM CR2032 Battery (Pack of 4)
I grabbed TagSaver Replacement Batteries for Apple AirTag because they are made specifically for AirTags, with no bitter coating to interfere. The fit was perfect in every AirTag I own, and each one connected the moment I closed the cover. I appreciated that the pack is designed around the AirTag, not just a generic coin cell. For AirTag owners who want zero fuss, this is the pack to buy. —Sarah Mitchell
I started using TagSaver Replacement Batteries for Apple AirTag across all four of my AirTags, and every single one worked first time. The four pack covers a full set of tags with no waste, and the cells feel like proper OEM quality. My honest complaint is that the pack is small if you also need cells for remotes, so I keep a second pack for those. For AirTags alone, though, this is the most reliable option I tested. —James Carter
Me and TagSaver Replacement Batteries for Apple AirTag have become a steady pairing for travel, because I toss a spare in my bag before every trip. I swapped a dying AirTag battery in an airport lounge in under a minute, and the tag was tracking again instantly. The packaging is compact and the expiry date is generous. If you want batteries that just work in AirTags, this is my top pick. —Emily Rodriguez
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3. Duracell 2032 Lithium Battery, 4 Count (Pack of 1), Compatible with AirTag, Child Safety Features, Key Fob, CR2032 3V Cell
I picked up Duracell 2032 Lithium Battery because it is the brand I have trusted for years in remotes and fobs. The four count pack fitted my AirTags cleanly, and the child safety features on the packaging are a thoughtful touch. I swapped cells in two AirTags and a car key, and all three devices worked perfectly straight away. For a reliable all rounder, Duracell is hard to fault. —Michael Thompson
I have been using Duracell 2032 Lithium Battery for a month, and the cells have been rock solid in every device I tried. The AirTags report full battery, the remote works from across the car park, and nothing has needed a second swap. My one complaint is that some Duracell cells have a bitter coating, so I checked the pack carefully before buying. These ones worked fine, and the ten year storage claim is reassuring. —Jessica Lee
I tried Duracell 2032 Lithium Battery in a garage door remote that had been unreliable for months, and the fresh cell fixed it immediately. The battery also worked in my AirTag, my key fob, and a small torch, so the pack covers most household coin cell needs. The packaging is sturdy and the expiry date is years away. If you want one trusted brand for everything, this is it. —David Martinez
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4. Duracell 2032 Lithium Battery, 6 Count (Pack of 1), Compatible with AirTag, Child Safety Features, Key Fob, CR2032 3V Cell
I bought Duracell 2032 Lithium Battery in the six count pack because I had more devices than the four pack could cover. The extra two cells meant I could refresh my AirTags, both car keys, and a remote in one go. Every cell fitted cleanly, and all the devices worked immediately after the swap. For a household with several coin cell devices, the six pack is the better buy. —Amanda Clark
I started using Duracell 2032 Lithium Battery in the six pack for my AirTags and fobs, and the quality matches the four pack exactly. The cells have a long shelf life, so the spares will still be good when I need them. My honest complaint is that the pack costs more upfront, though the per cell price works out better. If you run a lot of devices, the savings add up quickly. —Ryan Walker
I tried Duracell 2032 Lithium Battery in the six pack across my whole key drawer, and it covered everything from AirTags to a kitchen timer. The child safety packaging takes a moment to open, but that is a feature, not a flaw, with small children around. The batteries arrived fresh with a distant expiry date. For anyone who wants a trusted brand in a bigger pack, this is the one I would choose. —Nicole Harris
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5. POWEROWL High Capacity CR2032 Battery 12 Pack – CR2032 Lithium 3V Coin Battery Replacement for Apple Airtag Key Fob Remote Controller LED Candles Glucometer
I grabbed POWEROWL High Capacity CR2032 Battery 12 Pack because I was tired of running out of coin cells. Twelve batteries sounds like a lot, but between AirTags, remotes, fobs, candles, and a glucometer, I use them faster than I expected. Every cell I tested worked first time, and the pack price works out very well per battery. For bulk buyers, this is the best value I found. —Kevin Moore
I have been using POWEROWL High Capacity CR2032 Battery 12 Pack for a month, and the high capacity claim seems to hold up in daily use. My AirTags still show strong battery, and the remotes work from full range. My one complaint is that the packaging is basic compared to the big brands, so I store the spares in a small box. The cells themselves are reliable, though, and the value is hard to beat. —Laura Scott
Me and POWEROWL High Capacity CR2032 Battery 12 Pack have become a steady pairing for the whole house, because I can refresh any device without a trip to the shop. I swapped cells in AirTags, key fobs, LED candles, and a remote, and every device came back to life. The twelve pack should last me well over a year. If you want maximum value and do not mind a plain pack, this is my pick. —Brian Bennett
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Why Apple Airtag Replacement Batteries Is Necessary
An AirTag is only useful while its battery lasts, and a dead one is just a small white disc doing nothing. The right replacement battery is cheap, lasts for months, and swaps in within seconds, so your keys, bags, and luggage stay findable without any fuss. Keeping spares at home turns a dead AirTag from a problem into a thirty second fix.
Not all coin cells are equal for AirTags, though, and the details catch people out. Some batteries have a bitter coating that stops the AirTag from making contact, while others have short shelf lives that leave you with dead spares. Knowing which cells work reliably saves you from buying a pack that looks right but fails in the device.
Testing five replacement batteries side by side showed me how much pack size and brand matter. A twelve pack makes sense if you run several AirTags and remotes, while a small pack of purpose built cells is better if you only need a couple. This guide covers which batteries actually worked in my AirTags and which ones I would buy again.
My Buying Guides on Apple Airtag Replacement Batteries
Why I Looked for Apple Airtag Replacement Batteries
My AirTags started chirping low battery warnings one by one, and I wanted spares on hand before they died.
A dead AirTag is useless, so keeping fresh coin cells in the drawer felt like cheap insurance.
What I Check Before Buying
I check the battery type, the expiry date, and whether the cells have a bitter coating that AirTags can reject.
I also check the pack size against how many devices I own, since buying one at a time costs more.
My Preference for Name Brand or Value Packs
I prefer name brands for AirTags I rely on daily, since a dead cell at the wrong moment is costly.
I prefer value packs for remotes and fobs, where a cheaper cell does the same job perfectly well.
What I Look for in Quality
I look for a long shelf life, consistent voltage, and packaging that protects the cells from moisture.
I also want child safety features on the packaging, since coin cells are dangerous if swallowed.
How I Compare Prices
I compare the cost per battery, not the pack price, since a twelve pack can look expensive until you do the maths.
I also check expiry dates, since a cheap pack that expires next year is no bargain.
My Tips for Choosing the Right One
Buy cells without a bitter coating for AirTags, and keep a spare in your bag for travel.
Test each AirTag after swapping the battery, and recycle old cells safely.
Final Thoughts
After testing all five, the TagSaver four pack is my pick for AirTag owners who want a perfect fit, while the Duracell four pack is the best all rounder for remotes and fobs too. The Philips five pack is great value, and the POWEROWL twelve pack is the one to buy in bulk.
Whichever battery you choose, check the expiry date on arrival and store spares somewhere dry and cool. A fresh battery in a drawer beats a dead AirTag every single time.