Views: 0 Author: Site Editor Publish Time: 2025-12-31 Origin: Site
The A27 / 27A alkaline battery is a compact, high-voltage power source commonly used in small electronics. Its ability to provide consistent 12-volt power in a small, efficient package makes it ideal for low-power devices. In this article, we will explore the features of the A27 / 27A alkaline battery, its key applications, and when it is best to choose this type of alkaline battery for your devices.

The A27 / 27A alkaline battery is a small cylindrical battery known for delivering 12 volts of power. This type is often used in low-power devices, where its compact size and reliable power make it an essential energy source. The alkaline chemistry ensures that this battery provides steady, long-lasting performance, making it ideal for small gadgets such as remote controls, security devices, and more.
● Dimensions: 28mm long, 8mm in diameter.
● Capacity: Typically 20-30mAh, suitable for low-drain electronics.
● Voltage: Delivers a stable 12 volts, ideal for powering small electronics that need consistent energy.
● Weight: Approximately 4.4 grams, lightweight for easy installation in compact spaces.
Feature | Specification |
Dimensions | 28mm (length), 8mm (diameter) |
Capacity | 20-30mAh |
Voltage | 12V |
Weight | 4.4 grams |
The A27 / 27A alkaline battery provides high energy density in a small form factor, ensuring that devices requiring low-to-medium power can rely on it without sacrificing performance.
The A27 / 27A alkaline battery works by converting chemical energy into electrical power. This alkaline battery is designed to provide a stable 12V output, which is ideal for powering small electronics. The alkaline chemistry used in this battery ensures long shelf life and minimal self-discharge, which is why it’s often chosen for applications where devices may not be in constant use but require reliable power when needed.
One of the most common applications of the A27 / 27A alkaline battery is in remote controls and keyless entry systems. These devices require a reliable alkaline battery that can consistently provide 12 volts of power. The A27 alkaline battery is ideal for powering car alarms, garage door openers, and other security systems, making it an indispensable power source for daily security and convenience.
Wireless doorbells, alarm remotes, and motion sensors also rely on the A27 / 27A alkaline battery. These devices require a compact, powerful battery to ensure continuous operation. Thanks to its alkaline chemistry, this battery delivers steady and reliable power, ensuring your home security devices are always ready to go.
In addition to everyday devices, the A27 / 27A alkaline battery is used in smaller gadgets like medical devices, calculators, and toys. Its small size and reliable power make it a popular choice for applications where space is limited but consistent energy is essential. As an alkaline battery, it offers a long lifespan, making it perfect for devices that are used intermittently.
Application | Common Devices |
Remote Controls | Car alarms, garage door openers |
Home Security Systems | Wireless doorbells, motion sensors |
Specialty Gadgets | Medical devices, calculators, toys |
The A27 / 27A alkaline battery is the perfect choice when a small battery is needed. Its compact size fits into tight spaces in a variety of devices, making it a versatile power solution. Whether for a car key fob, a remote control, or a wireless sensor, this alkaline battery provides the right balance of power and size for those devices that need a small but reliable energy source.
This alkaline battery is best suited for low-to-medium power devices, like car key fobs and wireless doorbells, that don’t require constant high energy but do need reliable power when in use. The A27 battery ensures that these devices work smoothly while conserving energy when the devices are not in use.
Another reason to choose the A27 / 27A alkaline battery is its long shelf life. Many alkaline batteries, like the A27, are selected for backup power in keyless entry systems, garage door openers, or security alarms. The long shelf life ensures that the battery will be ready to use when needed, even if it’s been stored for a long time.
While both the A27 and 23A batteries deliver 12V, they differ in size and capacity. The A27 battery typically has a capacity of 20-30mAh, while the 23A battery has a higher capacity of 50-60mAh, making it more suitable for high-drain devices. The A27 alkaline battery is ideal for smaller, lower-power devices that don’t require as much energy.
Choosing between the A27 / 27A alkaline battery and the 23A battery depends on your device’s power requirements. If your device needs a smaller battery and operates on lower power, the A27 alkaline battery is the right choice. For devices with higher power demands, like some larger remotes or electronics, the 23A battery may be a better fit.
Feature | A27 Battery | 23A Battery |
Capacity | 20-30mAh | 50-60mAh |
Voltage | 12V | 12V |
Ideal Use | Small, low-power devices | High-drain devices |
When selecting the A27 / 27A alkaline battery, the most crucial factor is ensuring it delivers the correct voltage, which should always be 12V for this specific type. Additionally, check the reputation and reliability of the brand. Opt for well-known, trusted brands to guarantee a high-quality alkaline battery that will provide consistent power and performance. A reputable brand often means better manufacturing standards, which directly affects the battery’s lifespan and performance. Some devices may have unique power demands, so it’s essential to match the A27 alkaline battery specifications with the device's power needs to ensure optimal functioning.
Before purchasing an A27 / 27A alkaline battery, always check its expiry date. Expired batteries lose their ability to hold a full charge and may fail to deliver the necessary power, affecting the performance of your device. Using fresh batteries ensures your device operates at its best. Furthermore, it's important to confirm the A27 alkaline battery's compatibility with your device. Using the wrong type of battery, even if it’s the same size, can lead to poor performance, device malfunction, or even damage. Always verify that the battery model you choose aligns with your device’s specifications for the best results.
Factor | Key Considerations |
Voltage | Ensure it provides 12V power |
Brand & Quality | Opt for trusted brands for reliability |
Expiry Date | Always check for freshness to ensure full charge |
Compatibility | Verify compatibility with your device |
Proper disposal of used alkaline batteries is essential to protect the environment. Throwing used A27 batteries in the trash can cause harmful environmental effects. Instead, take them to a recycling facility to ensure safe disposal. Many communities offer battery recycling programs that make it easy to dispose of alkaline batteries responsibly.
Consider choosing eco-friendly alkaline batteries that are made with less harmful materials. Additionally, always recycle used alkaline batteries to reduce their environmental impact. Many battery manufacturers now offer recycling programs, allowing you to send back used batteries for proper disposal.
The A27 / 27A alkaline battery is a small but essential energy source for low-to-medium power devices. Its compact size, reliable performance, and long shelf life make it ideal for applications like remote controls, keyless entry systems, and home security devices. Choosing the right battery is crucial, and understanding its compatibility and expiry date can help ensure optimal use. Suzhou Nanguang Battery Co., Ltd. offers high-quality A27 batteries, providing dependable energy solutions for various devices with excellent value and reliability.
A: The A27 / 27A battery is a small, cylindrical alkaline battery that provides 12 volts of power, commonly used in low-power devices like remote controls and keyless entry systems.
A: A27 batteries are used in a variety of small electronics such as car alarms, garage door openers, wireless doorbells, and some medical devices.
A: The lifespan of a 27A battery typically lasts between 6 months to a year, depending on usage and the device’s power consumption.
A: The A27 and 23A batteries both provide 12 volts, but the 23A has a higher capacity. The A27 battery is best for lower power devices, while the 23A is suited for high-drain electronics.
A: A27 alkaline batteries are affordable, reliable, and have a long shelf life, making them ideal for low-power applications.
A: Used A27 alkaline batteries should be recycled properly at a designated recycling center to prevent environmental harm. Avoid throwing them in regular trash.