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Garage openers, remotes and doorbells: which battery?

Small remotes use either a lithium coin or a 12 V mini cylinder such as A23 or A27. The 12 V cells are not interchangeable with each other or with any coin.

• CR1616Lithium (CR) · 3 V · 16 × 1.6 mmGuide: garage door openers
• CR2012Lithium (CR) · 3 V · 20 × 1.2 mmGuide: remotes
• A23Alkaline · 12 V · 10.3 × 28.5 mmGuide: garage door openers, car alarms
• A27Alkaline · 12 V · 8 × 28.2 mmGuide: garage door openers, wireless doorbells
• LR1Alkaline · 1.5 V · 12 × 30.2 mmGuide: ceiling fan remotes

Source: Energizer battery cross reference guide, Energizer, checked 2026-10-29. The guide pairs a cell with a kind of device. Your model may take a different cell.

All device types · Measure the old cell