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A23 12V Alkaline Batteries for Small Devices

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Reliable A23 12V batteries for compact electronics

The A23 battery, also known as 23A, MN21, LR23A or V23GA, is a small alkaline 12V cell used in devices that need a short, stable burst of power. Although it is compact, it delivers the voltage required by many everyday products such as remote controls, car alarm fobs, wireless doorbells, garage door openers, security sensors, LED accessories and measuring devices.

Duracell MN21 A23 12V alkaline batteries 2 pcs

Choose the right name: A23, 23A, MN21 or LR23A

Many customers search for the same battery under different codes. If your device manual mentions A23 12V battery, 23A 12V, MN21, LR23A, A23G or V23GA, you are usually looking at the same alkaline battery format. Always check the old cell marking and the polarity inside the battery compartment before ordering.

Duracell MN21 A23 12V alkaline batteries 5 pcs

Premium brands and practical pack sizes

In this category you can find trusted options such as Duracell MN21 23A, Varta V23GA A23 and Uniross LR23A. Two-piece packs are convenient when you need a spare cell for one device, while five-piece packs are a smart choice for homes, offices, workshops or rental properties with several remotes and sensors.

Uniross A23 LR23A 12V alkaline batteries 5 pcs

Common uses for 23A 12V alkaline cells

  • Remote controls for gates, barriers and garage doors
  • Car alarms, key fobs and wireless security accessories
  • Doorbells, motion sensors and small transmitters
  • LED lights, pet collars, toys and testing equipment

For best performance, replace weak batteries promptly and avoid mixing new and used cells in the same device.

Varta V23GA A23 12V alkaline batteries 2 pcs

How to buy with confidence

When comparing an A23 battery price, consider both the brand and the number of cells in the pack. A high-quality alkaline 23A battery can help your device respond faster and operate more reliably, especially in remotes and alarm systems where consistent voltage matters. Store spare batteries in a cool, dry place, keep them in their original packaging, and insert them only with the correct polarity.

Tip: If your old battery is marked MN21, LR23A, 23A or V23GA, this A23 category is the right place to start.

BatteryMarket offers a focused selection of A23 12V alkaline batteries from proven manufacturers, making it easy to choose the correct replacement and order the quantity you need. Browse the products above, compare pack sizes, and select the A23, MN21 or LR23A battery that matches your device.

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