Duracell CopperTop MN21/23 Alkaline Batteries: Trustworthy 12V power for small security devices

Reliable power for keyfobs and alarms

Product Overview:

Think about the tiny battery that keeps your house secure. You only notice it when it fails. Duracell CopperTop MN21/23 supplies steady twelve-volt power for small security electronics. If you care about no-fuss replacements and predictable performance, this is for you. It fits keyfobs, garage openers, GPS trackers, motion detectors and other security gadgets. Built on alkaline chemistry for long shelf life and stable discharge. Picture your fob clicking on the first press and the garage door answering without a pause.

Key Features:

• Alkaline Chemistry: Long shelf life and stable discharge keep devices responsive, so your alarm and tracker do not surprise you
• 12 V Output: Delivers consistent voltage for small security electronics, avoiding glitches and false alarms you do not want
• Compatibility: Works with A23, MN21, 23AF, 23AE and V23GA formats, so replacements are quick and frustration-free
• Pack Size: Four batteries per package give you on-hand spares for regular swaps or unexpected failures
• CopperTop Reliability: Duracell's chemistry means predictable performance, so you can plan maintenance instead of chasing dead devices

Quick Specs:

• Brand: Duracell
• Manufacturer: Duracell Inc.
• Item#: DUR-MN21B4
• Manufacturer Part Number: MN21B4
• Series: CopperTop
• Material/Finish: Alkaline
• Format/Type: Battery
• Quantity/Pack: 4 Each
• Compatibility/Use: For 12 V devices such as car alarms, keyfob transmitters, GPS trackers, remotes, child locators, motion detectors, garage door openers, door locks and security devices
• Country of Origin: China

Picture your keyfob clicking on the first press, feel the calm when alarms respond, and keep a pack of four Duracell MN21s handy to stop surprises-shall I set one aside for you?

Do not recharge. Recycle or dispose of used batteries according to local regulations.