Overview

MN21/A23 12V Alkaline Battery (2 Pack) for Medical and Electronic Devices
The Verbatim MN21 (also known as A23 ) 12V alkaline battery is a compact, non-rechargeable power source designed to deliver reliable energy for small electronic devices that require stable voltage output. Commonly used in both medical and everyday electronics, it is suited for devices where consistent performance and long shelf life are important. Typical applications include thermometers, glucometers, blood pressure monitors, calculators, laser pointers, anti-bark collars, wristwatches, toys, and security alarm transmitters.

Description

The MN21/A23 battery is engineered for compact devices that demand a high-voltage, low-drain power solution. It provides dependable 12V output in a small cylindrical form factor, making it suitable for precision electronics and security systems. Its alkaline chemistry supports steady discharge performance, helping ensure devices operate reliably over time without frequent replacements.

Features

Key applications and uses
This battery is widely used across personal, medical, and security devices where compact size and dependable voltage are essential. It is especially common in:

• Medical instruments such as digital thermometers, glucometers, and blood pressure monitors
• Household electronics including calculators, wristwatches, and small gadgets
• Security systems such as alarm transmitters and remote controls
• Specialty items like laser pointers, toy devices, and pet training collars

Its versatility makes it a practical choice for maintaining uninterrupted performance in low-power but high-precision equipment.

Technical details and product information
This battery is identified under part number 49940 and SKU MEVEV49940 . It is supplied as a pack of 2 units.

Key technical specifications include:

• Voltage: 12V
• Weight: approximately 7.9g per battery
• Dimensions: 10.6mm x 28.5mm
• Battery type: MN21 / A23 alkaline, non-rechargeable
• Pack quantity: 2 pieces

The compact size and standardized voltage output make it suitable for devices requiring a stable and consistent power supply in a minimal footprint.

Performance and compatibility notes
Designed for reliability in low-drain applications, the MN21/A23 battery is optimized for devices that require short bursts of power or steady background operation. Its alkaline chemistry ensures predictable discharge behavior, which helps maintain device accuracy in sensitive instruments such as medical monitoring tools and security transmitters.

Due to its specific form factor and voltage rating, it is important to match the battery type exactly with device requirements to ensure correct performance and safe operation.

Specifications

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Specifications
Product Code	MEVEV49940
Voltage	12V
Weight	7.9g approx
Dimensions	10.6mm x 28.5mm
Qty	2