CR2025 vs CR2032: Key Differences & When to Choose
CR2025 and CR2032 are 3 V lithium coin cells; the numbers tell thickness in tenths of a millimetre—2.5 mm vs 3.2 mm—so they’re nearly identical discs with different depths.
People swap them because both slip into car fobs, motherboards and toys, yet the thinner CR2025 can rattle loose or die sooner, while the thicker CR2032 may refuse to fit, sparking late-night battery hunts.
Key Differences
CR2032 offers ~240 mAh vs CR2025’s ~170 mAh, giving longer life. The extra 0.7 mm thickness means tighter compartments accept only CR2025. Weight differs by 0.5 g—tiny, but critical in drones.
Which One Should You Choose?
Use CR2032 for longevity in roomy bays like key fobs or PC boards. Pick CR2025 when clearance is razor-thin, e.g., slim remotes or fitness trackers, trading capacity for fit.
Examples and Daily Life
CR2032 powers Apple AirTag and most car keyless remotes; CR2025 hides inside Tile Slim, digital calipers, and some garage-door clickers where space is king.
Can I stack two CR2025s to replace a CR2032?
No—voltage doubles to 6 V and risks frying circuits.
Will CR2032 last twice as long as CR2025?
Not quite; higher capacity plus higher drain often means 30–40 % longer life, not double.