PLCs, Power Supplies & Others

Technical Specifications and Hardware Overview

The Siemens A5E02625805-H2 serves as a backup power supply battery for industrial automation systems. This battery pack measures 95 mm in height, 68 mm in width, and 55 mm in depth for compact cabinet installation. It weighs approximately 0.35 kilograms, which facilitates straightforward handling during replacement procedures. The unit delivers a nominal voltage of 3.6 V with a typical capacity of 4.0 Ah. It uses lithium-thionyl chloride (Li-SOCl₂) chemistry for high energy density and long shelf life. The battery features two pigtail leads with a 2-pin connector for simple wiring connections. It contains a single cylindrical cell within a rugged plastic housing.

The unit provides a maximum continuous discharge current of 500 mA for sustained load support. It offers a pulse discharge capability up to 1.5 A for short-duration demand spikes. The battery stores 14.4 Wh of total energy for extended backup durations. It includes a built-in safety vent to release internal pressure during fault conditions. The self-discharge rate remains below 1% per year at room temperature. The operating temperature range spans -40°C to 85°C for extreme industrial environments. The unit meets IEC 60086-4 safety standards for lithium battery construction. It carries UN 38.3 certification for safe transport and handling procedures.

Application and Compatibility Information

This backup battery provides memory retention for PLC systems during power outages. It also maintains real-time clock operation when the main supply disconnects. The Siemens A5E02625805-H2 powers SRAM modules and configuration storage devices effectively. It supports Siemens S7-300 and S7-400 series PLC systems natively. The battery replaces the previous model A5E02625805-H1 with improved capacity. It offers extended backup time compared to standard alkaline alternatives. The unit includes a reverse polarity protection diode for safe installation. It provides reliable power for up to 10 years under normal storage conditions. The battery requires no maintenance during its operational service life. It delivers consistent voltage output until reaching end-of-life discharge levels.

Installation and Safety Considerations

The A5E02625805-H2 connects directly to the dedicated battery port on compatible PLC modules. Users must observe correct polarity when attaching the connector leads. The unit requires proper disposal according to local regulations for lithium batteries. It features a flame-retardant housing to minimize fire risk in operation. The battery incorporates a pressure relief mechanism for safety protection. Installation personnel should avoid short-circuiting the output terminals. The unit arrives with a factory charge level of approximately 80% capacity. Storage in cool, dry conditions maximizes the shelf life significantly. The battery operates reliably without memory effect issues. This design eliminates the need for periodic discharge and recharge cycles.

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