Mitsubishi F2-40BL is a specialized 3.6V lithium backup battery engineered to provide high-capacity memory protection and long-term data retention for Mitsubishi MELSEC F1, F2, and FX series programmable logic controllers (PLCs). Utilizing Lithium Thionyl Chloride (Li-SOCl2) chemistry, this industrial-grade battery is designed to sustain vital system parameters, internal registers, and real-time clock data during power interruptions, ensuring that automated machinery can resume operations without the risk of program loss. With its exceptional energy density and low self-discharge rate, the F2-40BL serves as a critical maintenance component for preserving the operational integrity of legacy and modern Mitsubishi industrial control systems.
Description Of Battery Mitsubishi F2-40BL
One essential part made especially to support the functionality of the FX2N series Programmable Logic Controllers (PLCs) is the Mitsubishi F2-40BL battery.

In the case of a power outage or other power disruption, this battery acts as a power backup to guarantee that the information stored in the PLC’s internal memory is preserved.
Feature of Battery Mitsubishi F2-40BL
- Memory Backup Function: In the event of a power loss, this battery makes sure that the FX2N PLC’s internal memory and optional RAM remain intact. Furthermore, this battery enables timing information (clock data), data registers, and data backup on auxiliary relays.
- Estimated Lifetime: The battery is expected to last up to five years at an ambient temperature of 25°C. However, the service life might be shortened to around three years if used in conjunction with a RAM cassette.
Application of Battery Mitsubishi F2-40BL
- A wide range of industrial applications that depend on FX2N series PLCs make substantial use of the F2-40BL battery. Here are a few instances:
- Manufacturing Automation: Prevents interruptions to the manufacturing process by safeguarding programs and operational data during power outages.
- Process Control: Maintaining business continuity in sectors where process control is essential, such the chemical and pharmaceutical industries.
- Infrastructure systems are employed in establishments like water treatment plants and electrical distribution networks to guarantee that control systems keep operating as intended.
Specification of Battery Mitsubishi F2-40BL
- Voltage: 3.6 Volts
- Capacity: 1800 mAh to 2600 mAh, depending on manufacturer
- Battery Type: Lithium Thionyl Chloride (Li-SOCl2)
- Dimensions: Approximately 14 mm in diameter and 50.5 mm in height
For More Information and Price: Battery Mitsubishi F2-40BL
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