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CR2032 vs CR2016

CR2032 and CR2016 are only partly interchangeable. They differ in thickness (3.2 mm vs 1.6 mm). The CR2032 holds about 2.5× the energy of the CR2016 (225 mAh vs 90 mAh).

CR2032⌀20 × 3.2 mmCR2016⌀20 × 1.6 mm
CR2032 and CR2016 at the same scale.
CR2032CR2016
Typelithium coin celllithium coin cell
Voltage3 V3 V
Size20 mm × 3.2 mm20 mm × 1.6 mm
Typical capacity≈ 225 mAh≈ 90 mAh
Rechargeablenono
Other codesDL2032, ECR2032, BR2032, 5004LCDL2016, ECR2016, BR2016, DL2016B

Can I use CR2016 instead of CR2032?

Short-term. 1.6 mm thinner: may sit loose; fine short-term.

Can I use CR2032 instead of CR2016?

No. 1.6 mm thicker: will not fit.

Where each one is used

CR2032: most modern car key fobs; Apple AirTag and other Bluetooth trackers; computer motherboard (CMOS / BIOS clock) battery; bathroom and kitchen scales.

CR2016: older Toyota, Honda and Subaru key remotes; watches and calculators; small toys and LED tealights; devices that stack two cells for 6 V.

Both sizes turn up in garage door opener remotes, wrist watches, car key fobs, depending on the model, which is why people mix them up: check the code on the old cell.

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