Duracell 21/23 12V Alkaline Battery, 4 Count Pack, 21/23 12
Quick take
This Duracell 21/23 12V alkaline battery 4-pack is made for devices that require the 21/23 battery format, including many car alarms, key fobs, remote controls, and GPS trackers. It is a disposable, high-power option intended for specialty electronics, and buyers tend to value the correct fit and dependable day-to-day performance. The main catch is making sure your device truly uses the 21/23 (A23/MN21) type.
Pros and cons
Pros
- Designed for specialty devices such as key fobs, car alarms, and GPS trackers that use the 21/23 format
- 4-pack convenience when you regularly stock backups for remotes and alarms
- Alkaline, single-use power for 12V equipment that expects this battery type
- Buyers frequently report correct size fit and that the batteries worked as needed
Cons
- Not rechargeable, so you will replace batteries when they wear out
- Device compatibility depends on using the correct 21/23 (equivalent) battery type
- Some devices may also accept close alternatives, but the safe bet is matching the exact battery designation your device specifies
What buyers think
Buyer-review evidence is strongly centered on practical usability, especially correct fit and “worked for me” performance in devices that require this specific battery format. Multiple shoppers mention using these batteries for remotes and other small electronics, and several highlight easy installation due to the compact size. A smaller number of comments focus on value in a multi-pack and keeping extras on hand, with the overall impression being that these batteries deliver reliable power for their intended specialty applications. Overall buyer-review evidence is mostly positive, but specific details about long-term battery life patterns are limited in the snippets available.
What this battery is for
The Duracell 21/23 12V alkaline battery 4-count pack is intended for specialty devices that use the 21/23 battery format. Common use cases include car alarms, key fobs, GPS trackers, and certain remote controls.
Compatibility matters here. This battery is described as equivalent to common designations like A23, MN21, 23AF, 23AE, and V23GA. If your device lists one of those designations (or 21/23), this is the right direction for matching.
Key specs that affect buying
- Battery type: Alkaline, single-use
- Voltage: 12V
- Pack size: 4 batteries
- Use case: specialty devices like alarms, key fobs, and GPS accessories
Duracell 21/23 12V alkaline battery pros and cons in real life
Best for
- People who need a reliable replacement for devices that call for a 21/23 (A23/MN21-type) battery
- Anyone stocking backups for key fobs, car alarms, remotes, or GPS trackers
- Shoppers who prefer a mainstream brand when buying disposable alkaline batteries
Who should avoid it
- If your device uses a different size/type than 21/23 (or its equivalents), this will not be the correct swap
- If you want rechargeable batteries, a single-use alkaline option is not the right match
How to choose the right 21/23 battery type
Before buying, check the battery compartment label, manual, or device listing for the exact designation. The 21/23 format is often cross-referenced with A23, MN21, 23AF, 23AE, and V23GA, so matching one of those is typically the goal. When in doubt, matching the exact printed code on your device helps avoid incorrect sizing and fit issues.
Price and availability
This is a multi-pack battery designed for specialty use, so it is often priced higher than everyday AA or AAA batteries. The main value question is whether you use this battery type often enough to benefit from having four on hand instead of buying singles.
If you are comparing options, check both the battery format match (21/23) and whether you prefer alkaline single-use power or rechargeable alternatives for frequent use.
Verdict
The Duracell 21/23 12V alkaline battery 4-pack is a solid choice when your devices specifically require the 21/23 format. Based on buyer feedback themes, it is easy to install when the code matches and performs as expected for key fobs, alarms, GPS trackers, and similar specialty electronics. Just be careful to confirm the battery type your device needs, since that is the biggest potential stumbling block.
FAQs
What devices use the Duracell 21/23 12V battery?
It is intended for specialty electronics that use the 21/23 format, commonly car alarms, key fobs, GPS trackers, and remote controls (as long as your device specifies a 21/23 type or its equivalents).
Is the 21/23 battery the same as A23 or MN21?
This battery is marketed as equivalent to A23, MN21, 23AF, 23AE, and V23GA. Still, you should verify your device’s battery designation to ensure compatibility.
Are these batteries rechargeable?
No, they are alkaline and single-use, so you will replace them when they run down.
What’s the advantage of buying a 4-pack?
A 4-pack is convenient if you use this battery type in multiple devices or want extras on hand for when a replacement is needed.
How do I confirm I’m buying the correct battery size?
Check the battery label in your device or the device’s manual for the exact 21/23-type designation (or a listed equivalent like A23/MN21). Matching the code is the safest way to avoid incorrect fit or failure to power the device.
Specifications
| Product Title | Duracell 21/23 12V Alkaline Battery, 4 Count Pack, 21/23 12 Volt Alkaline Battery, Long-Lasting for Key Fobs, Car Alarms, GPS Trackers, and More |
|---|---|
| Category | Electronics > GPS, Finders & Accessories > GPS System Accessories > Batteries |
| Brand | DURACELL |
| Manufacturer | Duracell Distributing, Inc |
| Model Name | Duracell 21/23 12V Alkaline Battery |
| Model Number | DURMN21BPK -SPR |
| Item Weight | 30 Grams |
| Number of Batteries | 4 A batteries required. (included) |
| Global Trade Identification Number | 00041333658681 |
| UPC | 041333658681 |
| External Testing Certification | Não Aplicável |
| Warranty Description | Limited warranty |
| Battery Capacity | 17 Milliamp Hours |
| Voltage | 12 Volts |
| Reusability | Single Use |
| Amperage | 2 Amps |
| Unit Count | 4.0 Count |
| Battery Weight | 49.9 Grams |
| Item Dimensions | 0.44 x 3.5 x 3.5 inches |
| Antenna Location | Car Alarm,GPS |
| Battery Cell Type | Alkaline |
| Battery Cell Composition | Alkaline |
| Recommended Uses For Product | Car Alarm,GPS |
Available variants
Style
- 4 Count
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