Shuangdeng 6-SPB-50B Lead-Carbon Battery

Product Details

6-SPB-50B Product Description

The Shuangdeng 6-SPB-50B is a 12V 50Ah valve-regulated lead-carbon (VRLC) battery engineered for deployment within industrial DC power architectures, uninterruptible power supply (UPS) systems, and distributed energy storage platforms. As a core component of the 6-SPB Series, the 6-SPB-50B is designed not as a standalone cell, but as a system-matched energy storage module that integrates seamlessly into layered control and power infrastructure — from the DC bus layer through to the protection, redundancy, and maintenance tiers of a complete automation or critical-power architecture.

In modern industrial facilities — spanning manufacturing, power utilities, petrochemical plants, water treatment stations, mining operations, and marine control rooms — the reliability of the DC power layer is foundational to every upstream control function. The 6-SPB-50B addresses this requirement with a lead-carbon electrode chemistry that delivers superior partial-state-of-charge (PSoC) cycling performance, reduced sulfation risk, and extended service life compared to conventional VRLA alternatives. This makes it particularly well-suited for float-charge DC bus applications where the battery remains in a partially charged state for extended periods between discharge events.

The 6-SPB-50B does not operate in isolation. Its value is fully realized when deployed as part of a coherent, layered DC power and control architecture. In a typical industrial automation environment, the battery module sits at the intersection of the power layer and the protection layer, providing the energy reserve that sustains control system operation during mains interruption, grid disturbance, or planned maintenance windows.

At the power supply layer, the 6-SPB-50B is commonly paired with Shuangdeng 6-GFM Series VRLA batteries in parallel string configurations to achieve higher capacity banks (100Ah, 150Ah, 200Ah), or deployed alongside 6-GFMJ Series high-rate discharge cells where short-duration, high-current backup is required for motor starter or contactor hold circuits. The battery bank interfaces with a DC rectifier and charger module — typically a 48V or 110V DC panel — which maintains float voltage and manages equalization cycles automatically.

At the control layer, the DC bus powered by the 6-SPB-50B bank sustains the operation of PLCs, DCS controllers, and remote I/O modules during power interruption. In Siemens-based architectures, this includes SIMATIC S7-300 or S7-400 CPUs with their associated PS 307 or PS 405 power supply modules, which draw from the DC rail. In Schneider Electric environments, Modicon M340 or M580 CPUs with BMX CPS 2000 power supply modules similarly depend on a stable DC bus for uninterrupted scan cycle execution.

At the I/O and signal layer, the continuity of DC power ensures that digital input modules (DI), digital output modules (DO), and analog signal conditioning modules maintain their scan states and do not generate spurious fault signals during transient power events. This is particularly critical in process control environments where a false I/O state change could trigger an emergency shutdown sequence or process upset.

At the communication layer, industrial Ethernet switches — such as those in the Siemens SCALANCE X series or Moxa EDS series — and PROFIBUS DP repeaters or PROFINET media converters require uninterrupted DC power to maintain network topology integrity. A loss of switch power during a grid event can fragment the control network and isolate remote I/O stations or HMI panels from the CPU, causing loss of supervisory visibility precisely when it is most needed.

At the HMI layer, operator interface terminals — including Siemens SIMATIC HMI TP700 Comfort panels or Weintek MT8000 series displays — rely on stable DC power to maintain process visualization and alarm management continuity. The 6-SPB-50B bank ensures that operators retain full situational awareness during power events, enabling informed manual intervention rather than blind response.

At the execution and drive layer, variable frequency drives (VFDs) and servo amplifiers typically incorporate their own DC bus capacitor banks for ride-through, but the control cards and encoder interfaces within these drives require a stable low-voltage DC supply. The 6-SPB-50B architecture supports the auxiliary control power rail that sustains drive control logic during brief interruptions.

At the protection and relay layer, numerical protection relays, circuit breaker trip coils, and motor protection units in MCC panels draw from the station DC battery system. The 6-SPB-50B, when deployed in a 110V DC string configuration (nine units in series), provides the trip energy reserve required by IEC 61850-compliant protection schemes in substation and power distribution applications.

At the maintenance and diagnostics layer, the lead-carbon chemistry of the 6-SPB-50B reduces the frequency of capacity testing and equalization cycles compared to standard VRLA designs, lowering the total maintenance burden over the battery's service life. Battery management systems (BMS) or DC panel monitoring units can track individual cell voltages, internal resistance trends, and temperature profiles to enable predictive maintenance scheduling — a key advantage in remote or unmanned installations.

Manufacturing & Discrete Automation: In automotive assembly lines, semiconductor fabs, and precision machining cells, the 6-SPB-50B provides the DC backup energy that sustains PLC scan cycles, robot controller power, and safety relay logic during utility interruptions. Unplanned shutdowns in these environments carry significant restart costs and quality risks; a properly sized 6-SPB-50B bank eliminates this exposure.

Power Utilities & Substation Control: In 110kV and 220kV substations, the station DC system — typically 110V DC — powers protection relays, circuit breaker trip coils, and SCADA RTUs. The 6-SPB-50B's deep-cycle capability and low self-discharge make it a reliable choice for float-service substation battery banks, where the battery may remain at full charge for months before being called upon for a protection operation.

Petrochemical & Process Industries: In refineries, LNG terminals, and chemical processing plants, the DC power system sustains emergency shutdown (ESD) logic solvers, fire and gas detection panels, and DCS controller power supplies. The sealed, maintenance-free construction of the 6-SPB-50B is well-suited to hazardous area battery rooms where access is restricted and ventilation requirements must be minimized.

Water & Wastewater Treatment: Remote pumping stations and water treatment facilities often operate with limited on-site staffing. The 6-SPB-50B's extended float life and low maintenance requirements reduce the frequency of site visits for battery servicing, while its reliable backup capacity ensures that SCADA telemetry and pump control logic remain operational during grid outages common in rural utility environments.

Mining & Metallurgy: Underground mining control systems and surface processing plant automation require DC backup power that can withstand vibration, temperature variation, and extended discharge cycles. The 6-SPB-50B's robust AGM construction and lead-carbon chemistry provide the resilience required in these demanding environments.

Marine & Offshore Control Systems: Vessel automation systems, dynamic positioning (DP) controllers, and engine room monitoring panels require certified DC backup power sources. The 6-SPB-50B's sealed construction and compliance with relevant IEC standards support deployment in marine control cabinet applications.

Q1: How many 6-SPB-50B units are required to build a 48V / 110V DC backup system, and what capacity should I target for a 4-hour backup requirement? A: For a 48V DC system, four 6-SPB-50B units are connected in series (4 × 12V = 48V). For a 110V DC system, nine units in series provide approximately 108V, which is within the operating range of most 110V DC panel equipment. To determine the required Ah capacity for a 4-hour backup, calculate the total DC load current (in amperes) at the DC bus voltage, then multiply by 4 hours and apply a 1.25 aging factor and a 0.8 temperature correction factor for ambient temperatures above 25°C. For example, a 48V system with a 10A continuous load requires a minimum of 10A × 4h × 1.25 × 1.0 = 50Ah — exactly the rated capacity of the 6-SPB-50B. For higher loads or longer backup durations, parallel strings of 6-SPB-50B units or larger-capacity 6-SPB Series models should be considered.

Q2: Is the 6-SPB-50B compatible with existing VRLA charger infrastructure, and does it require a specialized charger? A: The 6-SPB-50B is compatible with standard VRLA float chargers that provide a float voltage of 13.5V–13.8V per 12V unit and an equalization voltage of 14.4V–14.7V per unit. No specialized charger is required for retrofit applications replacing standard VRLA batteries. However, to maximize the lead-carbon chemistry's cycle life advantage, it is recommended to use a charger with a controlled equalization cycle (IUoU charging profile) rather than a simple constant-voltage charger. Shuangdeng's recommended charging parameters should be confirmed against the specific charger model's output profile before commissioning.

Q3: What does the 12-Month Warranty cover, and what is the process for warranty claims on the 6-SPB-50B? A: The 12-Month Warranty covers manufacturing defects, premature capacity loss (below 80% of rated capacity under standard float service conditions), and terminal or case integrity failures attributable to production quality. The warranty period commences from the verified shipment date as documented in the shipping records. Warranty claims are initiated by contacting NANKMOS at [email protected] with the original purchase documentation, shipment date confirmation, and a description of the observed failure mode. Physical inspection or capacity test data may be requested to support the claim assessment. Warranty coverage does not extend to damage resulting from incorrect charging voltage, installation in environments outside the specified temperature range, physical impact, or failure to follow the manufacturer's installation and commissioning guidelines.