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Terminals & Technology
Voltage
12v
Technology
EFB
Capacity
85Ah
CCA
760A
Size
306
x
172
x
220mm
Terminals
STARTSTOP
start stop technology
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SEALED MAINTENANCE FREE

Sinergy SS D31 EFB 12V EFB Start-Stop Battery

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Sinergy SS D31 EFB 12V EFB Start-Stop Battery Price

€314.16

5 in stock

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SKU: BSSD31EFB Category: Brand:
Technical Specification
Technology
EFB
Voltage
12
Capacity
85 Ah
CCA
760 A
Length
306 mm
Width
172 mm
Height
220 mm

About Sinergy SS D31 EFB 12V EFB Start-Stop Battery

Engineered specifically to handle the relentless cycling demands of modern stop-start and high-electrical-load vehicles, the Sinergy BSSD31EFB 12V battery provides outstanding cyclic longevity and uncompromised cranking power. Manufactured using advanced Enhanced Flooded Battery (EFB) technology, it features carbon-boosted active mass and polyester scrim-reinforced plates to safeguard against premature capacity loss.

  • Voltage: 12V
  • Capacity: 85 Ah (C20 rating)
  • Cold Cranking Amps: 760 CCA (EN/SAE)
  • Case Size: JIS D31 / N70ZZ
  • Dimensions: 306 mm (L) x 172 mm (W) x 220 mm (H)
  • Terminal Layout: Standard Automotive Post (Layout 0 / Right Positive)
  • Technology: Advanced EFB (Enhanced Flooded Battery)

Description

Overview & Power Delivery

The Sinergy BSSD31EFB 12V battery is a next-generation energy storage solution engineered to satisfy the intense power and cycle-life criteria of modern automotive architectures. Standard starting batteries succumb quickly to the structural stresses imposed by repetitive start-stop driving and continuous parasitic electronic loads. In contrast, the BSSD31EFB incorporates specialized Enhanced Flooded Battery (EFB) plate architecture, fusing heavy-duty calcium-tin-silver alloy grids with micro-porous polyester scrim retaining mats. This structural configuration firmly anchors the positive active material against the grid face, virtually eradicating plate shedding and internal short-circuits during high-rate cyclic operations.

Cold-weather ignition demands low internal electrical resistance and prompt chemical reaction rates. The Sinergy BSSD31EFB incorporates proprietary carbon additives within its negative plate chemistry, drastically improving dynamic charge acceptance (DCA) and transient high-current conductivity. Delivering 800 Cold Cranking Amps (CCA), this unit supplies explosive breakaway torque to heavy-displacement gasoline engines and high-compression commercial diesel powerplants even under sub-zero ambient conditions. The expanded surface area of the active mass ensures the battery recharges rapidly during brief driving intervals, preventing the battery from lingering in an undercharged state that accelerates terminal sulfation.

Vibration-induced degradation is among the most frequent failure mechanisms in utility, commercial, and off-road applications. Sinergy engineers the BSSD31EFB within a reinforced polypropylene enclosure fitted with internal hot-melt inter-cell anchor bonding. This robust matrix stabilizes the internal cell components against intense harmonic vibrations and high-amplitude road shocks. Combined with a labyrinth double-lid design with integrated flame arrestors, the battery guarantees zero acid leakage during spirited driving, exceptional condensation reflux efficiency, and complete maintenance-free dependability throughout its extended service life.

Technical Specifications

AttributeSpecification Details
Nominal Voltage12V
Rated Capacity (20-Hour Rate)85 Ah
Cold Cranking Amps (CCA)760 A (EN / SAE)
Case Standard / Box CodeJIS D31 / N70ZZ Group Size
Dimensions (Length x Width x Height)306 mm x 172 mm x 220 mm
Terminal TypeStandard Conical SAE Automotive Posts
Terminal Polarity LayoutRight Positive (Layout 0 / JIS Standard)
Hold-Down ConfigurationB0 / B1 Universal Flange Base
Internal ArchitectureEnhanced Flooded Battery (EFB) with Scrim Poly-Mats
Maintenance ProfileSealed Maintenance-Free (SMF) Reflux Labyrinth

Vehicle Compatibility & Start-Stop Demands

Contemporary vehicles outfitted with entry-to-mid-tier regenerative braking and micro-hybrid idle-stop-start systems subject the 12V power supply to deep continuous cycling. The Sinergy BSSD31EFB is precision-calibrated for European, Japanese, and domestic platforms requiring standard D31 or N70ZZ form factors. It functions reliably in vehicles where engine shutdown occurs frequently at traffic stops while high-draw ancillaries—such as HVAC blowers, GPS navigation, heated seating, audio amplifiers, and advanced driver assistance systems (ADAS)—draw energy exclusively from the 12V power bank.

Beyond factory stop-start consumer vehicles, the BSSD31EFB represents a massive operational upgrade for high-draw light commercial vans, overlanding four-wheel drives, and dual-battery setups. Traditional wet flooded batteries rapidly lose capacity when cycled below 80% State of Charge (SoC). The enhanced carbon-scrim matrices in the BSSD31EFB permit repeated moderate cycling without the irreversible structural decay typical of standard SLI units, making it ideal for support systems running communications gear, auxiliary lighting, inverters, and emergency service electronics.

Installation & Care Guidelines

Safe and correct installation is paramount to preserving the battery lifecycle and electrical integrity of your vehicle. Prior to physical installation, confirm the vehicle ignition is entirely disengaged. Begin by uncoupling the negative ground cable first, followed by the positive cable to eliminate short-circuit risks. Carefully inspect the battery mounting tray for grit, oxidation, or debris, cleaning the area before placing the Sinergy BSSD31EFB into position. Ensure the terminal clamp contact points are clean, free of oxidation, and secured to the recommended torque specifications (typically 4.5 to 6.0 Nm). Finish by re-attaching the positive connection first and the ground connection last.

For vehicles equipped with an intelligent Battery Management System (BMS), it is critical to reset or register the battery swap using a diagnostic scan tool. Registering the new capacity and EFB battery profile informs the vehicle alternator charging algorithm to calibrate charge rates appropriately, protecting the new cell pack from thermal overcharging. If the vehicle is designated for seasonal deployment or extended indoor storage, use an intelligent microprocessor-controlled multistage charger set strictly to the EFB/Lead-Acid profile to maintain nominal float voltage between 13.5V and 13.8V.

Frequently Asked Questions (FAQs)

Can the Sinergy BSSD31EFB replace an AGM battery in a start-stop vehicle?

No, an EFB battery should not be used as a downgrade replacement for vehicles that came factory-equipped with an Absorbent Glass Mat (AGM) battery. While EFB technology delivers double the cyclic life of a standard flooded battery, AGM configurations possess distinct dynamic charging and thermal handling profiles designed for advanced regenerative braking. You should only replace an EFB with another EFB or upgrade an existing standard wet battery to this EFB.

Does this battery require top-ups with distilled water?

No. The Sinergy BSSD31EFB is a 100% Sealed Maintenance-Free (SMF) design. It incorporates an internal labyrinth reflux cover that captures escaping electrolyte vapor, condenses it, and returns the fluid directly into the cell chambers, eliminating the need to ever refill electrolyte levels.

What causes premature failure in modern EFB batteries?

The primary causes of premature failure include persistent undercharging, operating with an uncalibrated vehicle Battery Management System (BMS), prolonged exposure to extreme localized exhaust manifold heat without thermal shields, and utilizing improper non-regulated high-voltage charging units.

What makes EFB superior to a standard flooded starter battery?

EFB batteries feature carbon-enriched active materials and a woven polyester scrim layered against each lead plate. This physical retention keeps active material from deteriorating during frequent discharge-charge cycles, providing more than two times the cyclic durability and substantially superior charge acceptance compared to standard SLI batteries.

Can I use a conventional legacy charger on this battery?

It is strongly recommended to use a modern smart battery charger with dedicated EFB or multi-stage microprocessor algorithms. Old-fashioned uncontrolled trickle chargers can boil the electrolyte through continuous unregulated overvoltage, potentially venting internal pressure and permanently degrading the internal cell plates.

Additional information

Weight6967131678 kg
Dimensions30.6 × 17.2 × 22 cm

Frequently Asked Questions — Sinergy SS D31 EFB 12V EFB Start-Stop Battery

Verified technical specifications, vehicle compatibility, and maintenance answers.

No, an EFB battery should not replace a factory-fitted AGM battery, as AGM vehicles rely on different charging voltage algorithms and regenerative braking recovery rates. However, this battery is an ideal replacement for factory-installed EFB units or as an upgrade for standard flooded batteries.

*Service times are estimates based on average conditions. While we aim for delivery within one hour, delays may occur. We recommend calling us for a precise time estimation based on your specific location.
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