--- product_id: 2591819 title: "Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline" brand: "duracell" price: "$8.35" currency: USD in_stock: true category: "Duracell" url: https://www.desertcart.us/products/2591819-duracell-mn21b2pk-watch-electronic-keyless-entry-battery-12-volt-alkaline store_origin: US region: United States of America --- # 5-year guaranteed shelf life 12V high power output Alkaline chemistry for reliable energy Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline **Brand:** duracell **Price:** $8.35 **Availability:** ✅ In Stock ## Summary > ⚡ Stay powered, stay ahead — never get caught powerless again! ## Quick Answers - **What is this?** Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline by duracell - **How much does it cost?** $8.35 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/2591819-duracell-mn21b2pk-watch-electronic-keyless-entry-battery-12-volt-alkaline) ## Best For - duracell enthusiasts ## Why This Product - Trusted duracell brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Long-Term Readiness:** Guaranteed 5 years of shelf life—always ready when you need it - • **Compact & Lightweight:** Small 9g battery packs powerful energy without bulk - • **Universal Compatibility:** Fits multiple battery types like A23, MN21, 23AF, and V23GA - • **Power Up Your Essentials:** Delivers consistent 12V alkaline power for car alarms, key fobs, and more - • **Trusted Duracell Quality:** Backed by a brand known for durability and defect-free performance ## Overview The Duracell MN21B2PK is a 12 Volt alkaline battery designed for high-drain devices such as car alarms, keyless entry systems, and GPS trackers. With a guaranteed 5-year shelf life and compatibility across multiple battery types, it ensures reliable, long-lasting power from a trusted brand known for quality and performance. ## Description The Duracell 21/23 12 Volt alkaline batteries are designed to provide reliable power as a garage door opener battery and to specialty devices like car alarms, key fobs, GPS trackers, remote controls, and other electronics. These batteries are guaranteed for 5 years in storage, so homeowners can rest assured they will be ready when you need them. From storm prep to holiday needs, Duracell is your trusted battery brand. ## Features - POWER FOR A WIDE RANGE OF DEVICES: The Duracell 12 Volt alkaline 21/23 battery provides reliable, long lasting power for a variety of compatible devices like car alarms, key fobs, GPS trackers, remote controls, and other electronics - GUARANTEED FOR 5 YEARS IN STORAGE: Duracell guarantees each 21/23 alkaline 12 Volt battery to last 5 years in storage, so you can be confident these batteries will be ready when you need them - BUILT FOR RELIABLE PERFORMANCE: In a wide range of high-powered devices, 12 Volt alkaline Duracell 21/23 batteries are equivalent to A23, MN21, 23AF, 23AE, 8LR932 and V23GA battery types - TRUSTED BATTERY BRAND: From storm prep to holiday needs, Duracell is your trusted battery brand. - QUALITY ASSURANCE: With a Duracell 12 v battery, quality is assured; every Duracell product is guaranteed against defects in material and workmanship - AVAILABLE SIZES: Duracell specialty alkaline batteries are available in 27, 21, 28A, 76A, AAAA, J, and N sizes ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00AZOOGWY | | Amperage | 27 A | | Antenna Location | Car | | Battery Capacity | 12 | | Battery Cell Composition | Alkaline | | Battery Cell Type | Alkaline | | Battery Weight | 9.07 g | | Best Sellers Rank | #42,649 in Health & Household ( See Top 100 in Health & Household ) #277 in Coin & Button Cell Batteries | | Brand | DURACELL | | Compatible Phone Models | NO Phone | | Customer Reviews | 4.8 out of 5 stars 6,054 Reviews | | Global Trade Identification Number | 00041333004068, 00199998009192 | | Included Components | True | | Item Dimensions | 0.4 x 3.5 x 3.5 inches | | Item Weight | 19.87 g | | Manufacturer | P & G | | Model Name | av2022-Duracell-volt alkaline-6a2dde00 | | Model Number | 5001878 | | Number of Batteries | 1 A batteries required. (included) | | Recommended Uses For Product | Car | | Reusability | Single Use | | UPC | 041333004068 | | Unit Count | 2 Count | | Voltage | 12 | | Warranty Description | As Labelled | ## Product Details - **Battery Capacity:** 12 - **Battery Cell Composition:** Alkaline - **Brand:** DURACELL - **Number of Batteries:** 1 A batteries required. (included) - **Recommended Uses For Product:** Car ## Images ![Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline - Image 1](https://m.media-amazon.com/images/I/61q3YV3iM4L.jpg) ![Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline - Image 2](https://m.media-amazon.com/images/I/61lg5VhvHYL.jpg) ![Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline - Image 3](https://m.media-amazon.com/images/I/71bYY-3ojzL.jpg) ![Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline - Image 4](https://m.media-amazon.com/images/I/71vDISjodxL.jpg) ![Duracell MN21B2PK Watch/Electronic/Keyless Entry Battery, 12 Volt Alkaline - Image 5](https://m.media-amazon.com/images/I/717ZEckRQeL.jpg) ## Frequently Bought Together - Duracell 21/23 12V Alkaline Battery, 2 Count Pack, 21/23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms, GPS Trackers, and More - Amazon Basics AAA Alkaline High-Performance Batteries, 1.5 Volt, 10-Year Shelf Life, 36 Count (Pack of 1) - Amazon Basics CR2032 Lithium Batteries, 4-Pack, Child-Proof Package, Non-Coated - AirTag Compatible --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/2591819-duracell-mn21b2pk-watch-electronic-keyless-entry-battery-12-volt-alkaline](https://www.desertcart.us/products/2591819-duracell-mn21b2pk-watch-electronic-keyless-entry-battery-12-volt-alkaline) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-17*