CR2477 battery: equivalents & specs
The CR2477 is the heavyweight of standard coin cells: 3 volts, 24.5 mm across, 7.7 mm tall and a full 1000 mAh. It exists for devices that must run for years unattended, such as asset trackers, utility meters, industrial sensors and Bluetooth beacons.
Same battery, other names
Every code below is the exact same cell as CR2477. Any of them will fit and work identically.
Compatible replacements
- CR2450: Shorter sibling at 5 mm and about 600 mAh, far more common in retail.
Buying and replacement notes
A gigawatt of standby time in a coin: at typical beacon drains of 10 to 20 microamps average, a CR2477 runs five years or more. It is rarely sold in supermarkets, so order from electronics distributors and prefer Panasonic or Renata. Like the CR2450, a flanged N variant exists for holders that key on the lip; match what came out.
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.