Product Description
The SIMATIC SL-2780 Backup Battery is a high-capacity industrial lithium backup battery used in Siemens SIMATIC PLC and automation systems. It is designed to maintain RAM memory, system parameters, and real-time clock data when the main power supply is switched OFF or during power interruptions, ensuring reliable restart without data loss.
This battery is typically used in heavy-duty PLC systems, CNC machines, and industrial automation controllers where long backup life and high reliability are required.
Key Features
- Industrial-grade lithium backup battery for PLC systems
- High-capacity design for long backup duration
- Maintains RAM memory and system clock during power loss
- Reliable data retention for automation and control systems
- Long service life with low self-discharge rate
- Compact cylindrical “D-cell” style format (variant dependent)
- Stable performance in harsh industrial environments
- Suitable for Siemens SIMATIC automation systems
- High temperature and vibration resistance
- Easy replacement in compatible PLC modules
Specifications
- Product Type: PLC Backup Battery
- Model: SL-2780
- System Compatibility: Siemens SIMATIC S7 / industrial PLC systems (variant dependent)
- Nominal Voltage: 3.6V DC
- Chemistry: Lithium Thionyl Chloride (Li-SOCl₂)
- Capacity: Approx. 19Ah (high-capacity industrial grade)
- Cell Size: D-size (industrial cylindrical)
- Construction: Sealed lithium primary cell
- Operating Temperature: Industrial grade (-40°C to +85°C typical)
- Application: PLC memory backup, CNC machines, automation systems, industrial controllers, robotics systems

