Siemens Backup battery, 0.85Ah for S7-300 CPU's and S5-90U

Product Overview

SIMATIC S7, Backup battery (LI) 3.6 V/min. 0.85 Ah, for for S7-300 CPUs and S5-90U. This lithium backup battery provides essential power backup for SIMATIC S7-300 controllers and S5-90U systems, ensuring data retention, program preservation, and real-time clock functionality during power outages and system shutdowns.

Key Features

Battery Specifications:

• Lithium (LI) battery technology for long service life
• 3.6 V nominal voltage
• Minimum 0.85 Ah capacity
• AA battery size form factor
• Pre-wired push-in connector for easy installation

System Compatibility:

• SIMATIC S7-300 CPU modules
• SIMATIC S5-90U controllers
• Backup power for system memory and real-time clock
• Data retention during power interruptions
• Program and configuration preservation

Performance Specifications:

• Voltage: 3.6 V nominal
• Capacity: Minimum 0.85 Ah
• Battery Type: Lithium (LI)
• Form Factor: AA size
• Operating Life: Extended service life with lithium technology

Technical Specifications

Physical Characteristics:

• Net Weight: 0.011 kg
• Packaging Dimensions: 6.20 x 7.60 x 1.40 cm
• Package Size Unit: CM
• Form Factor: AA battery size
• Connector: Pre-wired push-in connector

Electrical Properties:

• Voltage: 3.6 V nominal
• Capacity: Minimum 0.85 Ah
• Chemistry: Lithium (LI)
• Operating Temperature: Industrial temperature range
• Service Life: Extended life with lithium technology

Standards and Compliance:

• RoHS Compliance: Yes, since 31.03.2008
• Export Control: AL: N / ECCN: N
• Country of Origin: South Korea
• Product Status: Product phase-out since 01.10.2023

Product Information:

• EAN: 4025515062820
• UPC: 662643169782
• Packaging: 1 piece per package
• Product Class: Standard product (returnable)
• Phase-out Date: Product phase-out since October 1, 2023

Applications

The backup battery is essential for SIMATIC S7-300 CPU modules and S5-90U controllers requiring uninterrupted power supply for memory retention. Critical for maintaining program data, system configuration, user data, and real-time clock functions during power outages, system maintenance, or emergency shutdowns in industrial automation applications.

Operation

The lithium backup battery provides continuous power to the CPU's memory and real-time clock circuitry when main power is lost. The 3.6V output maintains volatile memory contents, preserving user programs, data blocks, and system configurations. The pre-wired connector ensures secure installation into the CPU's battery compartment. The battery automatically switches to backup mode during power interruptions and returns to standby when main power is restored.

Compatibility

CPU Compatibility:

• SIMATIC S7-300: All CPU modules requiring backup power
• SIMATIC S5-90U: Legacy controller backup power
• Memory Backup: Volatile memory and configuration data
• Real-time Clock: Continuous timekeeping during power loss

Installation Benefits:

• Pre-wired Connector: Simplified installation process
• Secure Fit: Proper connection to CPU battery compartment
• Long Service Life: Extended operation with lithium technology
• Reliable Operation: Consistent voltage output throughout service life

Important Notice

This product has been in phase-out status since October 1, 2023. For new installations or replacements, please contact your local Siemens office for current product alternatives and recommendations for S7-300 backup power solutions.

REACH Compliance

Information obligation imposed by Article 33, REACH Regulation: This product includes articles containing lead in concentrations higher than 0.1% weight by weight (w/w). Based on current information, this substance does not pose risk when used as intended, including proper disposal. Please follow local regulations for battery disposal.

Download existing graphical data for this product:

• Product Datasheet (PDF)
• Product Page - Siemens Industry Mall
• Technical Documentation - Siemens Support
• SIMATIC S7-300 Documentation