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CR2016 battery

20 × 1.6 mm · 3 V
lithium coin cell · about 90 mAh (varies by brand)

Buy CR2016 batteries

Thinnest 20 mm cell; some fobs stack two of them.

CR2016 coin cell
A CR2016 cell · Photo: Dmitry G, CC BY-SA 3.0, via Wikimedia Commons (resized)

CR2016 size, drawn to scale

CR2016+20 mmThickness (side view)CR2032 · 3.2 mmCR2025 · 2.5 mmCR2016 · 1.6 mmCR2012 · 1.2 mm
Drawn to scale by FobCells. The flat side marked + is the positive side.

CR2016 equivalents

The same size is sold as: DL2016ECR20165000LC

CR2016 vs similar sizes

BatteryThicknessTypical capacitySwap for CR2016?
CR20161.6 mm90 mAh-
CR20121.2 mm55 mAhNo: different thickness
CR20252.5 mm160 mAhNo: different thickness
CR20323.2 mm225 mAhNo: different thickness