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Bluetooth tracker batteries
Short answer: most replaceable Bluetooth trackers take one CR2032 — but check the model. Older Tile Mate (2018/2020) uses CR1632; some Tile and Chipolo models are sealed with no coin cell to buy. Match your unit in the table below.
Common questions
- What battery does an AirTag use?
- One CR2032 lithium coin cell — not CR2025 or CR2016 (same face size, wrong thickness). Press and twist the stainless cover. Apple recommends a bitterant-coated CR2032 labelled compatible with AirTag.
- Do Samsung SmartTag and Tile use the same battery as AirTag?
- SmartTag, SmartTag+, SmartTag2, Tile Pro, and Chipolo ONE / ONE Spot also take one CR2032. Older Tile Mate (2018/2020) uses a thinner CR1632. Newer Tile Mate / Slim / Sticker and Chipolo CARD lines are sealed — no coin cell to buy. Match your exact model in the table below.
- How do I replace a SmartTag2 battery?
- Insert an ejection pin or small clip into the rear tray hole, pull the tray out, replace the CR2032 with the positive (+) aligned to the tray mark, and reinsert the tray. If the tag sounds immediately after insertion, remove and reseat the cell — wrong tray orientation can prevent recognition.
- My Tile has no battery door — what do I buy?
- Often nothing. Mate 2022/2024, Slim, and Sticker are sealed non-replaceable per Tile. Only older Mate (2018/2020, CR1632) and Pro generations with a door take a user coin cell.
Which generation do you have?
| Generation / model | Battery | Replaceable? | Notes |
|---|---|---|---|
| Apple AirTag | 1 × CR2032 | Yes | Press and twist the stainless cover. Not CR2025 or CR2016 (same face size, wrong thickness). Apple recommends a bitterant-coated CR2032 labelled compatible with AirTag. |
| Samsung Galaxy SmartTag2 | 1 × CR2032 | Yes | Use an ejection pin or small clip in the rear tray hole, pull the tray, replace the CR2032 with + on the tray mark, then reinsert. Current model in Samsung’s SmartTag line. |
| Samsung Galaxy SmartTag / SmartTag+ | 1 × CR2032 | Yes | Same CR2032 tray pattern as SmartTag2. Older SmartTag / SmartTag+ are discontinued — open the SmartTag2 page if your unit is labelled SmartTag2. |
| Tile Pro (2018–2024 replaceable) | 1 × CR2032 | Yes | Slide-off battery door (2024 Pro: paperclip in the pinhole above the door). Tile Support recommends Panasonic, Maxell, or EVE. Confirm you have a Pro with a door — not a sealed Mate, Slim, or Sticker. |
| Tile Mate (2018 / 2020 only) | 1 × CR1632 | Yes | CR1632 — thinner and smaller diameter than CR2032. Mate 2022 / 2024, Slim, and Sticker are sealed; if there is no battery door, do not force the case open. |
| Chipolo ONE / ONE Spot | 1 × CR2032 | Yes | Open at the side gap; positive / printed text facing up. Chipolo CARD / CARD Spot are sealed renew products — not coin-cell trays. |
| Sealed trackers (Tile Mate 2022+, Slim, Sticker, Chipolo CARD…) | Built-in — not a user coin cell | No | No battery door means nothing to buy at the counter. Replace or renew the whole unit per the manufacturer — do not invent a CR2032 fitment for sealed models. |
Continue to a verified device
Still not working?
Confirm the exact model and whether a battery door or tray exists. Wrong thickness (CR2032 vs CR1632 vs CR2025) and sealed generations are the usual misses. Keep coin cells away from children; recycle spent lithium coins.