Product Overview
When a ControlLogix processor loses its backup battery, memory retention is at risk and unplanned downtime follows. The Allen-Bradley 1756-BATM is the externally mounted lithium battery assembly built for exactly this situation. It pairs a single 1756-BATA 10g lithium cell with a 3.28-foot cable, so the battery sits outside the chassis and can be swapped without disturbing the controller.
This is a practical, ready-to-ship spare for maintenance teams running 1756-L55Mxx, 1756-L61, 1756-L62, and 1756-L63 controllers. If you need one on site quickly, Oil AutoTech keeps fast dispatch, worldwide, as standard practice.
Key Technical Specifications
The 1756-BATM delivers an output rating of 20mA at 3.6V DC, with a maximum battery discharge current of 20mA. Input rating is 15mA at 5.1V DC. The nominal cell capacity is 1.7 Ah, and the lithium chemistry gives a lower self-discharge rate than Ni-Cad or NiMH alternatives, with an average shelf life around 10 years.
Environmental tolerance is a strong point. Operating temperature spans 0 to 60 degrees Celsius at 5 to 95% non-condensing relative humidity. Storage and shipping temperature sits at or below 30 degrees Celsius. Shock ratings are 30G panel mounted and 15G on DIN rail, with 2.0G vibration at 10-500Hz.
Specification Table
| Specification | Value |
|---|---|
| Brand | Allen-Bradley |
| Series | ControlLogix |
| Battery Type | Externally Mounted |
| Output Rating | 20mA at 3.6V DC |
| Input Rating | 15mA at 5.1V DC |
| Nominal Capacity | 1.7 Ah |
| Cell Weight | 10g |
| Operating Temperature | 0 to 60 degrees Celsius |
| Relative Humidity | 5 to 95% non-condensing |
| Shock Rating | 30G panel / 15G DIN rail |
| Vibration | 2.0G at 10-500Hz |
Installation and Mounting
The 1756-BATM mounts either directly to the controller panel or on a DIN rail. A DIN rail lock is required for rail mounting, and an adapter cable is needed if you intend to use external mounting repeatedly. Terminal connection uses a wire lead connector, and the wiring requirement is 1-meter Category 3 cable. The assembly ships with a 3.28-foot cable for connecting the module to the controller.
No particular enclosure type rating applies, so any enclosure type can be used. Plan your cable routing before mounting, and confirm the connector style matches your existing setup.
Compatibility and Selection Advice
This assembly is compatible with the 1756-L55M14, 1756-L55M16, and 1756-L6x processors. It also suits the Allen-Bradley ControlLogix 5561, 5562, 5563, and 5564 devices. Before ordering, verify your processor model, mounting preference, and whether you need the adapter cable for repeated external mounting.
Please verify current lifecycle status and availability with Oil AutoTech before ordering. Our team offers hands-on technical selection help, so you can confirm the right battery assembly the first time. Contact Oil AutoTech today for pricing and availability.
