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Replacing a car key fob, AirTag or small remote battery: should you buy CR2032 or CR2025 coin cells on amazon.co.uk, and which packs are charting?
The short answer: match the code printed in the battery compartment (CR2032 and CR2025 are different thicknesses). Buy a named lithium 3V pack, keep unused cells in the blister, and store them away from children.
Last updated: 14 October 2026
Duracell, Amazon Basics, GP and Energizer coin cells sit high on the Amazon UK Electronics bestseller list. This is a practical UK shopping shortlist on amazon.co.uk. It does not invent prices, runtimes or medical device advice beyond what the listings state.
CR2032 vs CR2025: what is the difference
Both are 3V lithium coin cells with the same diameter. The last two digits are the thickness in tenths of a millimetre, so CR2032 is thicker than CR2025. Using the wrong size can leave a device loose, tight or unable to close. Always check the code on the old cell or in the device manual.
- CR2032: common in Apple AirTag, many key fobs, scales and remotes (per Duracell and GP listings)
- CR2025: common in some key fobs, sensors, watches and smaller electronics (per Duracell and Energizer listings)
- Do not interchange them unless the device maker says both are approved
CR2032 packs charting now
- Duracell CR2032 lithium coin batteries (4 pack), listed for AirTag and other devices, with baby secure bitter taste ring, double blister packaging and up to 10 years storage in pack
- Amazon Basics CR2032 lithium coin cell batteries (6 pack), listed as 3V, mercury free, with an 8 year leak free shelf life claim, and as a replacement for BR2032, DL2032 and ECR2032
- GP Extra CR2032 lithium coin batteries (pack of 10), listed for AirTag and key fobs, with up to 10 year shelf life and child resistant blister packaging
- CR2032 batteries search on amazon.co.uk
CR2025 packs charting now
- Duracell CR2025 lithium coin batteries (4 pack), listed for key fobs, sensors and similar devices, with the same style baby secure packaging notes as the 2032 pack
- Duracell CR2025 lithium coin batteries (8 pack) if you need more cells of the same type
- Energizer CR2025 lithium batteries (2 pack), listed with up to 10 years storage and child resistant packaging
- CR2025 batteries search
Open the live listing on the day you buy. Pack counts and sellers change often.
Safety and storage
- Keep coin cells in child resistant packaging until use; Duracell and GP listings highlight bitter coatings or hard to open blisters
- Never leave loose button batteries where young children or pets can reach them
- If a battery is swallowed, seek emergency medical help immediately (standard UK advice for button batteries)
- Recycle used cells at a battery recycling point rather than household bins where possible
Related guides
- our AA batteries bulk pack guide for everyday AA alkaline and rechargeable packs
- our rechargeable torch and head torch guide when a device needs a torch rather than a coin cell
What to skip
- Buying CR2032 when the device needs CR2025 (or the reverse) without checking the code
- Loose unbranded bags with no size marking on each cell
- Leaving spare coin cells out of their blister packs
- Assuming “2032” and “2025” are interchangeable because both are 3V
Quick checklist
- Read the code on the old cell or in the compartment
- Match CR2032 or CR2025 exactly
- Prefer named brands with child resistant packaging
- Buy a pack size that matches how many devices you service
- Refresh price, pack count and seller on purchase day
Use the Amazon product and search links above to compare options on amazon.co.uk. This is a UK shopping shortlist for CR2032 and CR2025 coin cells, not a lab test or any brand’s official catalogue.
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