Duracell MN21 Alkaline Specialty Batteries 12V 2-Pack

Maintain the reliable operation of your security devices and remote controls with Duracell MN21 Alkaline Specialty Batteries 12V 2-Pack, specifically engineered to deliver concentrated high-voltage power for specialised electronic hardware. This essential 2-pack provides consistent connectivity and long-range signal strength, making it the premier choice for customers shopping for MN21 or A23 specialty batteries.

Product Specifications and Technical Details

• • Battery Type: Specialty Alkaline (non-rechargeable) primary cell.
• • Size Designation: Standard MN21, also internationally identified as A23, 23A, V23GA, or L1028.
• • Voltage Output: Nominal 12V output, providing the necessary electrical potential for long-range wireless communication.
• • Quantity: Retail multipack containing 2 individual batteries.
• • Chemistry: Alkaline Manganese Dioxide high-voltage configuration.
• • Physical Profile: Small cylindrical form factor, approximately 10.3mm in diameter and 28.5mm in length.
• • Storage Stability: Equipped with Duracell’s guarantee to retain power for up to 5 years in storage.

Ideal Applications and Performance

• • Home Security: Specifically optimised for wireless alarm sensors, window/door contacts, and glass-break detectors.
• • Remote Access: Provides reliable signal strength for automotive key fobs, garage door openers, and electric gate remotes.
• • Specialised Electronics: ideal for wireless doorbells, laser pointers, and some photographic equipment requiring 12V power.
• • Medical Devices: Suitable for specific models of digital thermometers and specialised miniature medical monitoring equipment.

Safety and Maintenance Guidelines

• • Handling Protocol: Handle batteries with care; avoid touching the terminals with bare fingers as skin oils can increase electrical resistance and impact signal strength.
• • Installation Accuracy: Ensure the positive (+) and negative (-) terminals are correctly aligned as per the device markings to prevent a short circuit.
• • Storage Advice: Keep in a cool, dry location in the original packaging; do not store loose with other batteries or metal objects.
• • South African Recycling Standards: Mercury-free formulation; depleted cells must be recycled at authorised collection points to ensure environmental safety.

Common Frequently Asked Questions

• • Are MN21 and A23 batteries the same? Yes, MN21 is simply the specific designation used by Duracell for the standard A23 size; they are fully interchangable.
• • Can the MN21 battery be recharged? No, this is a primary alkaline battery; attempting to recharge it is dangerous and may cause the cell to leak or rupture.
• • Why is my garage remote range decreasing? A drop in signal range is a common indicator that the 12V output of the MN21 battery is depleting and requires immediate replacement.
• • How long do these last in a key fob? Depending on frequency of use, these high-voltage cells typically provide reliable service for 12 to 24 months in standard remote control applications.