Best Round 12 Volt Battery Options for Key Fobs, Doorbells, and Gadgets
Finding reliable round 12 volt batteries (often sold as 23A, A23, or 21/23) is essential for devices like garage door remotes, doorbells, car alarms, and remote controls. This guide reviews top 5 12V alkaline options, comparing capacity, longevity, safety features, and compatibility. Each product below is chosen for proven performance in common American household devices, helping you choose a dependable battery in seconds.
Overview of Selected Products
| Product | Brand | Type | Key Strength |
|---|---|---|---|
| LiCB A23 23A 12V Alkaline Battery | LiCB | 23A / A23 | Fresh cells, long shelf life |
| Amazon Basics 4-Pack 23A Alkaline Battery | Amazon Basics | 23A / A23 | Value pack, reliable for remotes |
| Duracell 21/23 12V Alkaline Battery (4 Count) | DURACELL | 21/23 / 12V | Wide device compatibility |
| Energizer A23 Battery, 12V (Pack of 4) | Energizer | 23A / A23 | Economical bulk option |
| Voniko Alkaline Battery 23A (6-Pack) | Voniko | 23A / A23 | Long-lasting, safety features |
LiCB A23 23A 12V Alkaline Battery (5-Pack)

LiCB’s A23/23A battery is designed for 12V devices like garage door openers and remote controls. It emphasizes high-quality, CE and ROHS certified cells with a long shelf life. The product is suited for devices requiring consistent reliability and full 12V charge. The 5-pack option provides extra value for households with multiple 12V devices or for spare charging cycles.
Amazon Basics 4-Pack 23A Alkaline Battery

This 4-pack from Amazon Basics is positioned as a durable, value-friendly option for key fobs, garage door openers, and remote controls. The packaging emphasizes device compatibility and a heavy-duty casing for sustained performance in everyday gadgets. It’s a solid choice when you need reliable power for multiple devices around the home.
Duracell 21/23 12V Alkaline Battery

Duracell’s 21/23 12V alkaline batteries are designed for a wide range of devices, including car alarms, GPS trackers, and remotes. They are marketed for long-lasting power and come with Duracell’s warranty-style assurance against defects in materials and workmanship. This makes them a robust option for devices that must perform reliably over extended periods.
Energizer A23 Battery, 12V (Pack of 4)

Energizer offers a bulk pack of 4, aimed at consumers needing multiple replacements for their devices. The listing notes compatibility with a wide range of electronics, including remotes and other 12V devices, and it acknowledges equivalence with common 21/23 battery variants. It serves as a straightforward, economical option for households with several 12V devices.
Voniko Alkaline Battery 23A (6-Pack)

Voniko emphasizes safety and longevity with short-circuit protection and surge safeguards. The 6-pack is marketed as a longer-lasting solution for high-powered devices such as doorbells and remotes. The packaging highlights “greener” credentials, avoiding mercury and cadmium and prioritizing safer, more environmentally friendly construction.
23A 12 Volt Battery, 12V Battery for Remote

Generic 23A 12V options focus on broad compatibility for remote controls, doorbells, and similar devices. The listing emphasizes new and improved technology for longer life and power delivery, with features designed to support stable performance across various everyday electronics.
23A 12 Volt Battery 5 Count

Another Generic option, this 5-pack focuses on 23A alkaline chemistry with laminated technology to differentiate from standard 12V batteries. It targets devices like garage door openers, doorbells, and car alarms, delivering reliable power for multiple devices at a budget-friendly price point.
Duracell 12 Volt Alkaline Alarm Remote Battery MN21 / A23

Duracell’s MN21 / A23 battery is a compact 12V option intended for alarm remotes and similar devices. The listing provides basic dimensional details typical for these replacement batteries, emphasizing compatibility with common remote-controlled gadgets and the convenience of a compact packaging format.
Buying Guide: Key Purchase Considerations
- Compatibility: Confirm the device accepts 23A/A23 or 21/23 type cells. Many small remotes and door openers use these exact chemistry and sizing standards.
- Voltage and capacity: Ensure the battery maintains a stable 12V output and has sufficient shelf life and capacity for your device’s power needs.
- Shelf life and freshness: Look for certifications (CE/ROHS) and product claims about freshness, especially if you store spare batteries for extended periods.
- Package size vs. budget: If you have multiple devices, value packs (4-pack, 5-pack, 6-pack) can offer cost efficiency but ensure you actually need the extra batteries.
- Safety and environmental considerations: Some brands emphasize safer materials and lower hazardous substances, which can matter for households seeking greener options.
- Brand reliability: Well-known brands (Duracell, Energizer, Amazon Basics, Voniko) typically offer consistent performance and warranty-like assurances for consumer electronics.
- Device-specific recommendations: For high-use devices (e.g., garage door openers), prioritize batteries marketed for long life and steady voltage. For occasional use remotes, standard options are usually sufficient.
Choosing the right 12V round battery involves balancing device compatibility, longevity, and value. The products listed herein cover common needs—from bulk, economical packs to higher-end options with safety features. Review your devices’ usage patterns and select a pack that minimizes replacement frequency while meeting performance expectations.