Product Overview

The Allen-Bradley 1769-BA is a lithium battery module for the CompactLogix series.
Rockwell Automation manufactures this battery for effective energy storage in control systems.
This module operates within both Series A and Series B specifications.
Its primary function is retaining the user program, configuration, and program data.
The controller uses the 1769-BA only when shutdown or power is removed.
Without this battery, volatile memory loses all stored information during power loss.
Consequently, the 1769-BA is essential for maintaining controller operation integrity.

Technical Specifications

Electrical Characteristics

Nominal output voltage equals 3.0 VDC for consistent power delivery.
Nominal capacity reaches 850 mAh for extended backup duration.
Continuous isolation voltage supports 30 Volts for system protection.
Backplane current draws 1.4 Amps at 24 Volts during operation.
Power consumption equals 33.6 Watts under normal conditions.
Power dissipation measures 7.5 Watts , ensuring efficient thermal management.

Physical Dimensions

The battery measures 0.58 inches in diameter x 1.04 inches long .
It uses a cylindrical SE Type cell design for standard compatibility.
Wire leads provide fast connection to the controller's circuitry.
These leads eliminate the need for separate battery holders or connectors.
Shipping dimensions are 8 x 8 x 5 inches for the packaged unit.
Shipping weight equals 2 lbs for transport cost estimation.

Cell Chemistry

Positive electrode composition is Manganese Dioxide for stable performance.
Negative electrode uses Lithium metal for high energy density.
Electrolyte consists of Lithium perchlorate and 1,2-Dimethoxyethane.
An organic solvent mixture completes the electrolyte composition.
The 1769-BA is actually manufactured by Sanyo and FDK.

Compatible Controllers

The Allen-Bradley 1769-BA works with a wide range of CompactLogix controllers.
Compatible models include 1769-L23-QBFC1B and 1769-L23E-QB1B .
It also supports 1769-L23E-QBFC1B and 1769-L31 controllers.
Additional compatible models are 1769-L32C and 1769-L35CR .
The 1769-L32E and 1769-L35E controllers also use this battery.
1769-L23x and 1769-L3x controllers are supplied with one 1769-BA as standard.

Battery Status Monitoring

Controllers provide a BAT indicator LED for battery charge monitoring.
When the BAT LED activates, battery charge is nearing depletion.
Typically, this warning appears days or weeks before complete failure.
The 1769-BA should be replaced as soon as possible after this warning.
This indicator prevents unexpected data loss due to battery failure.
Regular monitoring of the BAT LED is a recommended maintenance practice.

Installation and Replacement Guidelines

Hot Replacement Procedure

Replacing an existing 1769-BA requires the controller to have active power.
The controller retains its memory via the active power supply during replacement.
Do not remove the battery while the controller is powered down.
Removing the battery without power risks complete data deletion.
The 1769-BA maintains memory only during shutdown or power removal.
Therefore, always apply power before replacing the battery.

Special Considerations

If the controller uses a non-volatile Secure Digital (SD) card, the battery may be removable.
CompactFlash cards also allow battery removal under shutdown conditions.
The 1769-BA does not retain data on SD cards or CompactFlash cards.
These non-volatile storage devices retain data independently of the battery.
For controllers without non-volatile memory modules, avoid removing the battery.
Never remove the 1769-BA in shutdown condition without non-volatile backup.

Safety and Handling

Prohibited Actions

Do not short-circuit the 1769-BA under any circumstances.
Never disassemble, deform, or puncture the battery housing.
Do not heat the battery or incinerate it in fire.
Never pile up or mix batteries with each other during storage.
Avoid placing batteries on metal cases, metal plates, or antistatic materials.

Multi-Cell Applications

For multi-cell applications, replace all batteries with new ones at once.
Mixing old and new batteries in the same device is not recommended.
This practice ensures consistent performance and prevents leakage.

Disposal Requirements

Removed batteries shall be disposed of in compliance with local directives.
Do not discard the 1769-BA in ordinary trash or recycling bins.
Follow all applicable hazardous waste disposal regulations.

Storage Conditions

Store the 1769-BA in well-ventilated, dry, and cool environmental conditions.
Avoid direct contact with sunlight, water, condensate, rain, snow, and frost.
The storage area must be away from sources of heat or hot air nozzles.
When moving from cold to warm, humid conditions, prevent dew condensation on packing.
Enough fire fighting apparatuses should be installed in storage warehouses.
Proper storage extends the shelf life of unused 1769-BA batteries.

Regulatory Compliance

The Allen-Bradley 1769-BA is exempted from dangerous goods regulations.
It meets US DOT 49CFR 173.185 requirements for transport.
Compliance includes IATA Packing Instructions 968, Section II.
Special Provisions ADR 188 and IMDG 188 also apply.
Therefore, shipping the 1769-BA follows simplified dangerous goods procedures.

Enclosure and Physical Design

The 1769-BA has an open enclosure design for better airflow.
This design promotes heat dissipation around the battery area.
Open construction allows natural convection cooling during operation.
Consequently, the 1769-BA operates efficiently without excessive heat generation.

Package Contents

• 1 x Allen-Bradley 1769-BA lithium battery module

• 1 x Pre-attached wire leads for controller connection

• 1 x Battery installation instruction sheet

• 1 x Safety data sheet (SDS) for lithium batteries

Frequently Asked Questions (FAQ)

1. How long does the 1769-BA battery last in a controller?

Battery life depends on operating conditions and temperature. The Allen-Bradley 1769-BA typically lasts 1 to 3 years under normal use.

2. Can I replace the 1769-BA without losing my program?

Yes, replace the 1769-BA while the controller has power applied. This retains all data in volatile memory during the replacement process.

3. Does the 1769-BA recharge while the controller is powered?

No, the Allen-Bradley 1769-BA is a primary (non-rechargeable) lithium battery. It does not recharge during controller operation.

4. What does the BAT LED indicator mean on my controller?

The BAT LED indicates the 1769-BA charge is nearing depletion. Replace the battery within days or weeks of first activation.

5. Is the 1769-BA compatible with ControlLogix controllers?

No, the Allen-Bradley 1769-BA is designed only for CompactLogix series. ControlLogix controllers use a different battery model.