Battery box Manufacturers

I. Definition and Core Characteristics

A battery box (encoder backup battery pack) is a dedicated accessory for servo drive systems that maintains position retention on absolute encoders when the drive's main power is switched off or interrupted unexpectedly. Its function is to continuously power the encoder's internal counting circuit so that the motor shaft's absolute position data is never lost. A battery box is not simply an ordinary dry-cell holder — it is a complete backup power unit integrating a cell pack, protection circuitry, a heat-dissipating structure, and a standardized interface. Its performance directly determines whether equipment needs to be re-homed after power-up, making it a key component in maintaining continuous production efficiency on automated lines.

Core characteristics include:
Stable Voltage Retention: Multiple nickel-metal hydride or lithium cells are precisely connected in series, typically with a nominal voltage of 3.6V and capacities ranging from 1000mAh to 2700mAh, meeting backup needs for different power-loss durations.
Standardized Plug-and-Play Interface: Commonly uses a 2-pin connector design compatible with mainstream servo drive battery compartments, enabling direct connection without modification.
Quality Heat Dissipation and Structural Design: Housings are typically molded from high-strength ABS engineering plastic with surface ventilation ribs, balancing protection and heat dissipation to extend cell lifespan.
Rigorous Safety Certification: Products must pass capacity testing, internal resistance testing, and safety performance testing to ensure long-term stability and safety.

II. Main Types and Application Scenarios

By capacity: Battery boxes are available in standard-capacity versions (such as 1100mAh) and high-capacity versions (such as 2700mAh), allowing users to select the appropriate model based on their drive model and required backup duration.

Applications span CNC machine tool servo drive systems, industrial robot joint motors, and servo control cabinets on automated production lines, making battery boxes an essential consumable spare part in absolute encoder systems that require periodic inspection and replacement.

III. Key Production and Quality Control Points

Cell Selection and Series Assembly: Nickel-metal hydride cells meeting safety standards are precisely connected in series to form the nominal voltage pack, ensuring stable power delivery without abnormal voltage differences.
Housing Molding and Heat Dissipation Design: The one-piece injection-molded housing features slotted ventilation ribs, balancing structural strength with heat dissipation efficiency for prolonged standby operation under continuous power.
Interface and Lead Wire Workmanship: The 2-pin connector and red/black lead wires are assembled using standardized crimping processes, ensuring stable contact resistance and clear polarity to prevent reverse connection.
Full Testing and Traceability: Every battery pack undergoes capacity, internal resistance, and safety testing, and carries a unique traceability QR code and QA PASS quality mark, ensuring full traceability and quality assurance.

IV. Core Advantages

Safe and Reliable: Multiple rounds of testing and safety certification ensure the battery pack does not leak, swell, or exhibit other abnormalities during long-term standby use.
Plug-and-Play: The standardized interface design eliminates the need for secondary wiring, allowing users to install and use the product directly upon receipt.
Wide Range of Specifications: Multiple capacity versions meet the needs of different equipment and backup duration requirements.
Traceable Quality: A unique identification code ensures every battery pack can be traced back to its production batch and test records.

Summary

The battery box serves as the guardian of a servo drive system's "memory," with its stability directly determining whether encoder position data survives a power loss intact. As smart manufacturing places increasing demands on continuous production and maintenance-free operation, standardized, highly safe, and easily replaceable encoder backup battery boxes have become an indispensable part of the servo system spare parts ecosystem.