WhatsApp:+86 18005022363 WeChat: +86 18005022363 
Email：
Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 1756-BATA |
| Manufacturer | Allen-Bradley (Rockwell Automation) |
| Product Type | Replacement Battery Assembly |
| Compatible Module | 1756-BATM battery module |
| Compatible Controllers | 1756-L55, 1756-L61/A, L62/A, L63/A (Series A L6x) |
| Battery Chemistry | Lithium (non-rechargeable) |
| Voltage | 3.6V DC |
| Capacity | Approximately 19Ah (two cells) |
| Cell Configuration | Two D-size cells |
| Terminal Type | Wire leads with connector |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -45°C to 85°C (short-term transport, ≤30 days) |
| Recommended Storage | 25°C (77°F), 40-60% relative humidity |
| Lifecycle Status | Active Mature |
Main Features and Advantages
Two-Cell Pack Architecture for Extended Retention: The 1756-BATA contains two D-size lithium cells, a configuration that provides substantially greater capacity than the single-cell 1756-BA1 battery used in direct-slot installations. Rockwell Automation’s published retention estimates for the 1756-BATA in a 1756-L6x controller indicate approximately 146 days of memory retention at 25°C with 100% power-off time, extending to 268 days at 50% power-off time . This capacity margin is particularly valuable in installations where controllers experience extended scheduled outages or where the ambient temperature inside the enclosure is elevated, conditions that accelerate battery depletion.
Purpose-Built for the 1756-BATM Holder: The 1756-BATA is not a generic lithium battery; it is a factory-assembled pack with a specific connector that mates with the 1756-BATM module’s wiring harness. The wire-lead design allows the battery to be positioned within the holder and connected securely, reducing the risk of intermittent contact that can occur with clip-style battery connections in high-vibration environments. Because the 1756-BATA is the officially designated replacement for the BATM module, using this assembly preserves the controller’s UL and CE compliance and avoids the compatibility risks associated with third-party substitutes.
Clear Compatibility Boundary with Series B Controllers: One of the most important characteristics of the 1756-BATA is what it does not do: it is not compatible with Series B L6x controllers. Series B processors use the 1756-BA2 battery, which has different current-delivery characteristics tailored to the pulsed load profile of the Series B retention circuit . Attempting to use a 1756-BATA or 1756-BA1 in a Series B controller can result in inadequate current supply during the critical save cycle, potentially causing program loss. This clear delineation means that maintenance teams must verify the controller series before ordering replacement batteries, a check that can be performed by inspecting the processor nameplate or the controller properties in Studio 5000.
Lifecycle Availability for Legacy Systems: Rockwell Automation lists the 1756-BATA with an “Active Mature” lifecycle status, indicating that the product remains available for purchase even though it serves legacy Series A hardware . This status is significant for facilities that have standardized on later ControlLogix platforms but retain isolated Series A controllers in service for specific processes. The 1756-BATA can still be procured through authorized distribution channels, unlike many discontinued 1746-series SLC components, giving maintenance planners a reliable supply path for this specific battery assembly.
Application Field
The 1756-BATA is deployed wherever ControlLogix Series A controllers with 1756-BATM battery modules remain in active service, a scenario most common in facilities that adopted ControlLogix early and have not migrated those specific control loops to newer platforms. In process industries such as oil and gas, chemical, and power generation, Series A L6x controllers often remain in place on auxiliary systems—water treatment, compressed air, and balance-of-plant monitoring—long after the main process controllers have been upgraded. The 1756-BATA provides the retention power these controllers need during scheduled plant outages, when the chassis may be de-energized for days while maintenance work proceeds elsewhere.
Manufacturing operations with large installed bases of ControlLogix hardware use the 1756-BATA as a scheduled maintenance item, replacing the battery at calendar intervals regardless of the BAT LED status. Rockwell Automation’s guidance recommends replacement schedules based on ambient temperature, ranging from no replacement needed below 35°C to every 8 months at 56–70°C . Facilities in hot climates or unairconditioned enclosures follow these intervals to prevent battery leakage and unexpected program loss. The 1756-BATA is stocked alongside the 1756-BATM holder so that both the battery and its mounting hardware are available when maintenance windows arrive.
System integrators supporting legacy ControlLogix installations also rely on the 1756-BATA for controller replacements and upgrades. When a Series A processor fails and a spare is placed into service, the existing BATM holder may already be mounted in the chassis. A fresh 1756-BATA ensures that the replacement controller has full retention capability from the moment it is powered down for the swap. For integrators who maintain loaner or test chassis, keeping a 1756-BATA on hand avoids the delays that occur when a battery reaches end of life during a critical commissioning or troubleshooting window.
