What is the CR2032 equivalent?

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CR2032 battery

CR2032: 3 V lithium coin cell, 20 mm × 3.2 mm, about 225 mAh (675 mWh). Same battery: DL2032, ECR2032, 5004LC, 2032.

3 Vvoltage

20 mmdiameter, 0.79 in

3.2 mmthick, 0.126 in

≈ 225 mAhcapacity

CR2032 to scale. Lithium manganese dioxide (Li-MnO2), not rechargeable.

It is the most common coin cell made, so every major brand (Energizer, Duracell, Panasonic, Maxell, Murata, Renata) sells it and they are interchangeable.
Many packs now have a bitter coating to discourage swallowing; in a few devices, including the Apple AirTag, the coating can stop the cell touching the contacts, so try an uncoated cell if a new one does nothing.
Unused, a CR2032 keeps most of its charge for around 10 years, so a spare in the drawer is still good.

DL2032ECR20325004LC2032

Battery	Size	Volts	Works?	Why
CR2012	20 mm × 1.2 mm	3 V	Short-term	2 mm thinner: may sit loose; fine short-term.
CR2016	20 mm × 1.6 mm	3 V	Short-term	1.6 mm thinner: may sit loose; fine short-term.
CR2025	20 mm × 2.5 mm	3 V	Short-term	0.7 mm thinner: may sit loose; fine short-term.
LIR2032	20 mm × 3.2 mm	3.7 V	No	Rechargeable 3.7 V cell (4.2 V when full): can damage a 3 V device.
CR2450	24.5 mm × 5 mm	3 V	No	Different width: 24.5 mm vs 20 mm.

Code: C = lithium, R = round, 20 = 20 mm wide, 32 = 3.2 mm thick. Same width: CR2012, CR2016, CR2025, LIR2032.

20 mm coin cells are the size children swallow most; one can burn the throat in two hours. Keep spares sealed and battery doors taped.