CR1632 battery: equivalents & specs
The CR1632 is a 3 volt lithium coin cell, 16 mm across and a chunky 3.2 mm thick, packing 125 to 140 mAh. It is the high-capacity member of the 16 mm family, widely used in smart key fobs, Tile-style trackers and tire pressure sensors.
Same battery, other names
Every code below is the exact same cell as CR1632. Any of them will fit and work identically.
Buying and replacement notes
Modern proximity fobs that must listen continuously favor this cell over the thinner 16 mm sizes, and many Toyota, Kia and Hyundai smart keys specify it. It matches the CR2032's 3.2 mm height in a smaller diameter, and holds roughly 60 percent of its capacity. The two are not interchangeable; a 1632 rattles hopelessly in a 2032 holder.
Commonly used in
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⚠️ Keep away from children. Swallowed button batteries, especially 20 mm lithium coins, cause severe injury within hours. If a child swallows one, call the 24/7 National Battery Ingestion Hotline (US) at 800-498-8666 or poison control at 800-222-1222 immediately. What every parent should know.