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CR2450 battery

24.5 × 5 mm · 3 V
lithium coin cell · about 620 mAh (varies by brand)

Buy CR2450 batteries

Larger, higher-capacity cell used in some smart keys.

CR2450 coin cell
A CR2450 cell · Photo: Raimond Spekking, CC BY-SA 4.0, via Wikimedia Commons (resized)

CR2450 size, drawn to scale

CR2450+24.5 mmThickness (side view)CR2477 · 7.7 mmCR2450 · 5 mmCR2430 · 3 mm
Drawn to scale by FobCells. The flat side marked + is the positive side.

CR2450 equivalents

The same size is sold as: DL2450ECR24505029LC

CR2450 vs similar sizes

BatteryThicknessTypical capacitySwap for CR2450?
CR24505 mm620 mAh-
CR24303 mm290 mAhNo: different thickness
CR24777.7 mm1000 mAhNo: different thickness