A-B 1756-BA2 Lithium Battery

Allen-Bradley 1756-BA2 Lithium Battery (ControlLogix PLC Memory Backup Battery)

 

 

Product Description

The Allen-Bradley 1756-BA2 is a lithium backup battery used in ControlLogix PLC systems (1756 series). It provides backup power to retain controller memory and real-time clock data when the main power supply is removed.

Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1756-BA2
• Type: PLC memory backup battery
• Voltage: 3.0V DC
• Chemistry: Lithium (non-rechargeable)
• Function: Memory retention + real-time clock backup
• Compatibility: ControlLogix 1756-L6x series controllers

Working Principle

When the PLC loses main power:

Main power OFF → Battery ON →
Maintains RAM memory + system clock →
System restores normally when power returns

Main Functions

• Prevents PLC program loss during power failure
• Maintains real-time clock (RTC)
• Supports system memory retention
• Ensures stable restart after shutdown

Features

• Industrial-grade lithium battery design
• Long service life with low self-discharge
• Plug-in wired connector type
• Stable performance for continuous industrial use
• Designed for Rockwell ControlLogix systems

Applications

• Factory automation systems
• PLC control cabinets
• Oil & gas industry systems
• Chemical process control
• Power plants
• Water treatment facilities