How Much Do AirTag Batteries Cost and How Often Will You Replace Them?
If you're considering an Apple AirTag or already own one, understanding the battery situation is practical—and straightforward. Unlike some tech gadgets that hide their ongoing costs, AirTags use a common, inexpensive battery type that you can replace yourself whenever needed.
What Battery Does an AirTag Use? 🔋
AirTags run on a CR2032 coin-cell battery—the same small, flat circular battery you'll find in many watches, calculators, and other small electronics. This is important because it means you're not locked into buying proprietary replacements or paying a premium for "official" batteries.
Actual Battery Costs
CR2032 batteries are among the cheapest battery types available. You'll typically find them:
- Single batteries at drugstores or supermarkets for $2–$5 each
- Multi-packs (often 4–10 batteries) at big-box retailers or online for $0.50–$2 per battery depending on quantity and brand
- Premium or specialty brands (longer-lasting, higher quality) at the higher end of those ranges
The key point: you're not paying a significant premium to keep your AirTag running. These batteries are genuinely inexpensive and widely available—no special trip or online order required unless you prefer bulk buying.
How Long Does an AirTag Battery Last? ⏱️
Apple states that an AirTag battery lasts approximately one year of typical use. This is the variable that matters most for your actual costs.
What affects battery life:
- Tracking frequency — If you're actively using Find My to locate your AirTag regularly, the battery drains faster than if it sits quietly on your keys
- Bluetooth communication — More frequent connection checks drain the battery sooner
- Temperature — Extreme cold or heat can reduce battery efficiency
- Battery age — Even unused batteries degrade over time; a multi-pack you buy today won't perform identically if some sit in a drawer for years
Most people report getting somewhere in the 12–18 month range before they see a low-battery notification. Some get less; some stretch it longer. Apple sends a notification to your phone when the battery is running low, so you won't be caught off guard.
Replacement is Simple—You Do It Yourself
Unlike some consumer electronics, Apple designed AirTags for user replacement. The back twists off, the battery slides out, and a fresh one slides in. No tools, no appointments, no shipping. This keeps your cost down and your AirTag functional immediately.
What to Know Before You Buy
Consider your comfort level. If the idea of replacing a tiny battery yourself feels annoying or if you'd rather not manage another item on your household list, that's a real factor in whether an AirTag makes sense for you. The cost is negligible, but the friction of replacing it—however small—is something only you can judge.
Stock a spare at home. Many people keep a CR2032 or two in a drawer so they never need to leave home or wait for a delivery when replacement time comes. The cost of buying a small multi-pack upfront is so low that this strategy makes sense.
Watch for low-battery alerts. Your phone will notify you when the battery is running low, giving you a window to plan the replacement before your AirTag stops working entirely.
The bottom line: AirTag battery costs are negligible—typically a few dollars per year—and the replacement process is something any adult can handle in under a minute. The real question isn't whether it's affordable; it's whether the AirTag itself solves a tracking problem you actually have.
