1756-BA2 -

Allen-Bradley 1756-BA2 Battery — Reliable Power for ControlLogix Systems

The Allen-Bradley 1756-BA2 battery plays a vital role in ensuring reliable memory retention for ControlLogix controllers and 1756 series systems. Designed by Rockwell Automation, this compact lithium battery offers a balance of long-lasting performance, stable voltage output, and easy integration into automation environments. In modern industrial operations, continuous system performance is essential, and this battery helps achieve exactly that.

Overview of the 1756-BA2 Battery

The 1756-BA2 is a non-rechargeable lithium battery that provides stable power to retain system memory when the main power supply is turned off. It supports both ControlLogix processors and modules within the 1756 chassis. Unlike many generic alternatives, this battery is purpose-built for Rockwell’s architecture, ensuring compatibility, consistency, and system integrity.

Because industrial controllers operate under harsh conditions, this battery is designed to handle wide temperature variations and maintain performance stability over long periods. In practice, the 1756-BA2 delivers dependable memory backup even in demanding manufacturing, energy, and automation environments.

Technical Specifications

Understanding the technical details of the Allen-Bradley 1756-BA2 helps users make informed decisions. This battery features a 3.0V lithium chemistry, which provides steady voltage and long shelf life. It typically operates between -20°C and +60°C, making it suitable for most industrial settings.

Additionally, the battery’s capacity rating allows it to last up to 3 to 5 years depending on usage conditions. Its small cylindrical design simplifies installation inside the ControlLogix modules, while its lightweight form ensures that it does not add stress to the system’s internal structure.

Key specifications include:

Model Number: 1756-BA2
Battery Type: Lithium
Voltage: 3.0 Volts DC
Typical Life: 3–5 years (depending on environment and usage)
Operating Temperature: -20°C to +60°C
Applications: ControlLogix 1756-L6x and L7x series controllers
Manufacturer: Rockwell Automation

With these specifications, the 1756-BA2 ensures long-term reliability, making it a preferred choice for automation engineers and maintenance teams worldwide.

Core Features and Advantages

The Allen-Bradley 1756-BA2 battery stands out because it delivers reliability and simplicity in one package. Its design focuses on durability, compatibility, and ease of maintenance. Here are the key benefits:

Long Service Life – Thanks to its lithium chemistry, the battery retains its charge for years, minimizing the need for frequent replacements.
Stable Power Output – It maintains constant voltage levels to safeguard data stored in volatile memory.
Easy Installation – The battery can be quickly installed or replaced without complex tools or configurations.
Compact and Lightweight Design – Its small footprint ensures perfect fitting inside the controller housing.
Reliable Memory Backup – It prevents loss of important system data when power failures occur.

Together, these features ensure that automation systems run smoothly even under unpredictable conditions.

Why Memory Backup Matters in Industrial Control

Every automation system relies on accurate data and configuration memory. When controllers lose power, volatile memory can erase, which leads to downtime, reprogramming, and potential production losses. The 1756-BA2 battery prevents this by keeping memory intact when external power sources are disconnected.

For instance, in manufacturing plants, controllers often undergo maintenance shutdowns. During these periods, the 1756-BA2 ensures that all system data, control logic, and configuration files remain stored. When the system restarts, everything functions exactly as before, saving both time and resources.

Therefore, the battery is not just an accessory—it is a safeguard for system reliability, data integrity, and operational efficiency.

Installation and Maintenance

Installing the 1756-BA2 is straightforward. Before replacement, users should power down the controller and note the orientation of the existing battery. After removing the old one, insert the new battery into the same slot, ensuring the connector is properly aligned. Once connected, the controller automatically recognizes the new battery.

During maintenance, it is crucial to monitor battery health. Most ControlLogix controllers display battery status warnings through the software interface or LED indicators. When the low-battery signal appears, replacing it promptly avoids any data loss.

Because this battery is non-rechargeable, it should never be connected to a charging circuit. Instead, users should safely dispose of depleted batteries following local regulations for lithium products.

Typical Applications

The 1756-BA2 battery serves across numerous industries that depend on Rockwell’s ControlLogix systems. Some of the main applications include:

Manufacturing plants that operate continuous automation lines
Energy facilities that rely on process control and data retention
Water treatment systems requiring secure parameter storage
Automotive production lines with programmable logic controllers
Pharmaceutical production environments where consistent operation is vital

Because the 1756-BA2 ensures smooth memory retention, it supports every sector that cannot afford interruptions in process control.

Performance in Harsh Environments

Industrial environments often expose equipment to temperature extremes, vibration, and electromagnetic interference. The Allen-Bradley 1756-BA2 battery is designed to perform reliably under such conditions. Its sealed construction protects the lithium cells from moisture and dust, while its stable voltage output ensures consistent data retention even during system disturbances.

Additionally, the battery’s resistance to self-discharge extends its shelf life. Users can store spare batteries for years without worrying about significant capacity loss. This feature makes it highly convenient for maintenance teams managing large-scale automation systems.

Environmental and Safety Considerations

Although compact, the 1756-BA2 battery requires proper handling. Because it contains lithium, it should not be incinerated or exposed to open flames. Furthermore, it must be stored in a dry, cool environment away from direct sunlight. Rockwell Automation provides clear safety data sheets that guide proper storage, usage, and disposal procedures.

From an environmental perspective, responsible disposal ensures that lithium materials are recycled safely. Many industrial distributors and service centers, including Wuhan Yuli Automation Technology Co., Ltd., offer eco-friendly disposal or replacement services for industrial batteries.

Purchasing and Support

For genuine Allen-Bradley 1756-BA2 batteries, it is crucial to source them from authorized distributors or trusted suppliers. Counterfeit or incompatible batteries can cause data corruption or even physical damage to ControlLogix hardware.

Wuhan Yuli Automation Technology Co., Ltd., a professional supplier of industrial automation components, provides authentic Rockwell Automation parts, including the 1756-BA2. Their products ensure high reliability and compatibility with a wide range of Allen-Bradley systems.

By purchasing through verified suppliers, users can maintain long-term system stability, receive technical support, and ensure compliance with Rockwell Automation’s performance standards.

Conclusion

In conclusion, the Allen-Bradley 1756-BA2 battery is a small yet crucial component that guarantees data integrity within ControlLogix controllers. With its durable lithium chemistry, stable voltage, and easy maintenance, it helps industries operate continuously without the fear of memory loss.

When paired with Rockwell’s advanced automation systems, this battery provides an added layer of protection, ensuring smooth system recovery after power interruptions. Whether used in manufacturing, energy, or infrastructure automation, the 1756-BA2 remains a reliable partner for uninterrupted operation.

For dependable supply and professional service, Wuhan Yuli Automation Technology Co., Ltd. offers high-quality Allen-Bradley products, ensuring that every automation system performs at its best.