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Description：

The Yokogawa S9129FA Battery Pack is a Nickel-Metal Hydride (Ni-MH) rechargeable backup battery specifically engineered for use in Yokogawa industrial systems, including Distributed Control Systems (DCS) and PLC . As a critical power backup component, the S9129FA ensures system memory, real-time clocks, and essential circuitry remain powered during mains failures, minimizing unplanned downtime and protecting process data. 

Originally manufactured by Yokogawa Electric Corporation, this compact battery pack delivers a stable 2.4 V DC output with approximately 1100 mAh capacity, ideal for long-term backup in mission-critical control systems. 

Specification：

Frequently asked questions

1.What is the Yokogawa S9129FA battery used for?

It serves as a backup power source for Yokogawa control systems such as CS1000 and CS3000, preserving memory and during power interruptions. 

2.What type of battery chemistry does it use?

The S9129FA battery uses Nickel-Metal Hydride (Ni-MH) chemistry, offering stability and durability for industrial backup applications. 

3.What voltage and capacity does it have?

The S9129FA provides 2.4 V DC output with an approx. 1100 mAh capacity. 

4.Is this battery suitable for harsh environments?

Yes — it is designed to operate reliably over a wide temperature range and withstand typical industrial conditions. 

Product Applications

Oil and Gas: Ensuring the stable operation of control systems for oil refining, natural gas extraction, and pipeline transportation.

Petrochemicals: Distributed monitoring of complex processes such as chemical reactors and separation towers.

Power Energy: Covering boiler control in thermal power plants, nuclear power plant systems, and substation .

Water Treatment and Environmental Protection: Infrastructure requiring long-term continuous monitoring, such as urban water supply and wastewater treatment.