Verbatim 49940 MN21 Alkaline Battery

Verbatim 49940 | MN21 Alkaline Battery Specialist

The Verbatim 49940 household battery Single-use battery MN21 Alkaline is a specialist 12V power source designed for reliability in compact electronics. This pack contains two single-use batteries, ideal for UK households needing dependable power for medical devices, security transmitters, and small electronics. Because it uses alkaline technology, it offers a stable voltage output for consistent device performance. In practice, this battery is a trusted choice for critical applications where power failure is not an option.

Powering Critical Medical & Security Devices

This MN21 battery is engineered for devices that demand steady, reliable power. Think of blood pressure monitors, glucose meters, and home security alarm transmitters. Because these devices often sit idle for long periods, the alkaline chemistry ensures a long shelf life while retaining charge. So, you can trust it to work when you need it most. The compact 12V output is specifically suited for low-drain, high-importance electronics.

Compact Dimensions for Tight Spaces

With a width of 10.6 mm and a height of 28.5 mm, this battery fits into slim device compartments. Many modern electronic gadgets, like laser pointers and small toys, have limited internal space. However, this MN21 battery is designed to slot in perfectly without forcing or damaging contacts. Its lightweight 7.9 g build ensures it does not add unnecessary bulk to portable equipment. Always verify your device’s battery compartment size before purchase.

Alkaline Technology for Stable Voltage

The Verbatim 49940 uses alkaline battery technology, delivering a consistent 12V output. This is crucial for devices like calculators and anti-bark collars, where voltage drops can cause malfunction. Also, alkaline batteries are widely available and cost-effective for single-use applications. Unlike some rechargeable types, they maintain voltage steadily until fully depleted. This makes them a reliable choice for emergency or infrequently used gear.

Designed for Everyday Electronics

Beyond medical use, this battery powers a range of household electronics. For example, it suits watches, small toys, children’s books with sound modules, and calculators. The black and red colour coding helps with correct polarity during installation. Because the battery is single-use, it is optimised for devices that require minimal maintenance. Always dispose of used batteries responsibly according to UK regulations.

In the box

• 2 x Verbatim 49940 MN21 Alkaline Batteries (12V, Single-use)
• Product colour: Black and Red

Before you order

• Confirm your device requires an MN21 12V battery type.
• Verify the physical dimensions (10.6 mm x 28.5 mm) fit your compartment.
• Ensure your device is not designed for rechargeable battery types.
• Check local disposal regulations for single-use alkaline batteries in the UK.

Buyer FAQs

Buying advice

This Verbatim 49940 MN21 battery is ideal for users needing reliable, single-use power for medical or security devices. Its alkaline technology and compact size make it a practical choice for everyday electronics. Covered by the applicable manufacturer warranty.