Shuangdeng 6-SPB Series Modules

Technical Dossier

Product Details And Specifications

Shuangdeng 6-SPB Series: Comprehensive Module Range and Technical Overview

The Shuangdeng (双登) 6-SPB series represents one of China's most widely deployed lead-carbon battery platforms in heavy industrial applications. Manufactured by Jiangsu Shuangdeng Group Co., Ltd. — a Tier-1 supplier with over 50 years of electrochemical engineering history — the 6-SPB series is installed across chemical processing plants, nuclear auxiliary power systems, petroleum refineries, grid-scale UPS infrastructure, and railway traction backup systems. The series is certified to IEC 60896-21/22, GB/T 19638, and YD/T 799 standards, making it a reference-grade choice for facilities requiring long-cycle, high-reliability standby power. The 6-SPB designation follows the Chinese national standard nomenclature: "6" denotes a 6-cell (12V nominal) configuration, "SPB" stands for Super Power Battery (lead-carbon chemistry). Capacity variants range from 24Ah to 200Ah, covering the full spectrum of telecom, industrial UPS, and renewable energy storage applications.

The Evolution of 6-SPB Architecture

The 6-SPB series emerged from Shuangdeng's transition from conventional VRLA (Valve-Regulated Lead-Acid) technology toward lead-carbon composite electrode chemistry, a shift that began in the early 2010s in response to partial-state-of-charge (PSoC) degradation problems observed in renewable energy and telecom float applications. The first-generation 6-SPB cells used a blended carbon additive in the negative active material (NAM), which suppressed sulfation and extended cycle life from approximately 300 cycles (standard VRLA) to over 1,500 cycles at 50% DoD. The second-generation architecture introduced a structured carbon matrix in the negative plate, improving charge acceptance rate (CAR) to above 95% and enabling high-rate partial-state-of-charge (HRPSoC) operation — a critical requirement for solar and wind buffering applications. Current production units in the 6-SPB line feature AGM (Absorbent Glass Mat) separators with optimized electrolyte saturation levels, recombination efficiency above 99%, and a design life of 10–12 years at 25°C. Compatibility note: 6-SPB cells are dimensionally interchangeable with standard DIN and JIS footprint VRLA batteries of equivalent capacity, but the charge voltage profile (2.30–2.35 V/cell float; 2.40–2.45 V/cell equalize) differs from conventional VRLA and must be configured correctly in the charger or BMS to avoid premature capacity loss.

6-SPB Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified production range of the Shuangdeng 6-SPB series. Each model is a 12V nominal, VRLA lead-carbon battery in AGM construction.

6-SPB-24: 12V 24Ah; compact standby for small UPS and telecom cabinets.
6-SPB-38: 12V 38Ah; mid-range capacity for distributed telecom base stations.
6-SPB-40: 12V 40Ah; standard industrial UPS float service, 10-year design life.
6-SPB-50: 12V 50Ah; high-rate discharge variant for short-duration backup loads.
6-SPB-50B: 12V 50Ah; reinforced terminal and enhanced cycle variant of 6-SPB-50 for cyclic applications.
6-SPB-65: 12V 65Ah; railway auxiliary power and substation DC control panels.
6-SPB-75: 12V 75Ah; solar energy storage and off-grid hybrid systems.
6-SPB-80: 12V 80Ah; medium UPS strings, 19-inch rack-compatible configurations.
6-SPB-100: 12V 100Ah; primary capacity tier for industrial UPS and data center backup.
6-SPB-100B: 12V 100Ah; B-variant with bolted inter-cell connectors for high-vibration environments.
6-SPB-120: 12V 120Ah; large-format standby for switchgear and protection relay panels.
6-SPB-150: 12V 150Ah; high-capacity tier for grid-scale UPS and renewable buffering.
6-SPB-150B: 12V 150Ah; B-variant with reinforced container for outdoor enclosure deployment.
6-SPB-180: 12V 180Ah; heavy-duty industrial standby, chemical plant emergency power.
6-SPB-200: 12V 200Ah; maximum capacity in the 6-SPB range; nuclear auxiliary and refinery UPS.
6-SPB-200B: 12V 200Ah; B-variant with dual terminal configuration for parallel string assembly.

Sourcing Hard-to-Find & Obsolete 6-SPB Parts

DriveKNMS maintains a dedicated inventory program for the Shuangdeng 6-SPB series, including models that have transitioned to end-of-standard-production (EOSP) status. For facilities operating legacy UPS strings or DC control systems built around 6-SPB cells, direct OEM replacement procurement becomes increasingly difficult as the series matures. DriveKNMS sources 6-SPB units through authorized distribution channels and verified secondary-market suppliers, with full traceability documentation available on request. For obsolete or low-volume SKUs (e.g., 6-SPB-38, 6-SPB-50), DriveKNMS provides cross-reference analysis to identify dimensionally and electrically compatible current-production alternatives within the Shuangdeng catalog or from equivalent IEC-certified manufacturers. Life-cycle extension support includes: batch testing of stored inventory, electrolyte condition assessment, capacity verification discharge testing, and documentation packages for regulatory compliance in nuclear and petrochemical facilities.

Quality Control for the 6-SPB Range

Each 6-SPB unit processed through DriveKNMS undergoes a structured incoming inspection and functional verification protocol. Visual inspection covers terminal integrity, container seam condition, vent valve seating, and label legibility. Electrical testing includes open-circuit voltage (OCV) measurement to confirm state of charge (minimum 12.6V for a fully charged 12V unit), internal resistance measurement via conductance testing (Midtronics or equivalent), and capacity verification via controlled constant-current discharge at the C10 rate to 10.5V cutoff. For B-variant models (6-SPB-50B, 6-SPB-100B, 6-SPB-150B, 6-SPB-200B), additional torque verification on bolted terminals is performed to manufacturer specification (typically 8–10 N·m). Batteries failing OCV, internal resistance, or capacity thresholds are quarantined and not released for sale. Test records are retained for a minimum of 3 years and are available to customers upon request for regulated-industry procurement.