€128.81
The Sinergy 12V 45Ah automotive battery (SKU: B545000040) delivers exceptional starting reliability, high cold-cranking performance, and extended service life for modern passenger cars. Manufactured with advanced lead-calcium expanded grid technology, this sealed maintenance-free power unit provides robust resistance against internal corrosion and plate degradation in demanding climates.
The Sinergy 12V 45Ah starter battery (SKU: B545000040) is an engineered power solution optimized to fulfill the rigorous starting demands of modern passenger vehicles, light transport, and specialized utility machinery. Designed according to strict European standard DIN 545 000 040 parameters, this unit utilizes refined calcium-calcium (Ca/Ca) alloy grids. By incorporating calcium into both the positive and negative active plates, the internal chemical structure significantly minimizes electrolyte gassing and water loss over its operating lifespan. This yields a completely sealed, maintenance-free enclosure that eliminates the necessity of topping up with distilled water throughout its operational cycle.
Cold-weather reliability is driven by an optimized internal plate configuration, packing high-density active material into ultra-thin grid structures. This architectural design decreases internal electrical resistance (impedance) while maximizing active surface area exposure to the sulfuric acid electrolyte. The direct result is an instant cold cranking rating of 400 A (EN), providing strong engine turnover even when sub-zero ambient temperatures cause motor oil to thicken and spark systems to suffer from reduced efficiency. Whether operating under harsh winter mornings or enduring high-temperature engine bay heat soak during intense summer commutes, the B545000040 maintains sustained voltage stability.
Vibration resistance is another foundational attribute of Sinergy battery engineering. Road shocks, uneven surfaces, and engine resonance frequently induce premature mechanical failure in conventional starter batteries via plate shedding and internal short circuits. The Sinergy B545000040 overcomes this with hot-melt resin bonding, envelope polyethylene separators, and anchored internal grid groups. These reinforced components insulate plates against severe shock loads, keeping active materials securely bonded to the grid skeletons and drastically extending overall cyclic endurance under punishing real-world operating profiles.
| Parameter | Specification Details |
|---|---|
| SKU / Part Number | B545000040 (DIN 545 000 040) |
| Nominal Voltage | 12 Volts |
| Rated Capacity (20h Rate) | 45 Ampere-hours (Ah) |
| Cold Cranking Performance (EN) | 400 Amperes (A) |
| Box Code / Standard DIN | L1 / DIN 063 |
| Dimensions (Length x Width x Height) | 175 mm x 175 mm x 190 mm |
| Terminal Type | Standard T1 Automotive Posts (Conical DIN) |
| Terminal Polarity / Layout | Terminal 0 (Right Hand Positive: + on Right) |
| Hold-Down Flange Type | B13 (Base mounting ledges on all four sides) |
| Internal Chemistry / Construction | Calcium/Calcium Sealed Maintenance-Free (SMF) |
The Sinergy B545000040 is engineered primarily for standard internal combustion engine (ICE) passenger cars, compact hatchbacks, city vehicles, and non-regenerative micro-utilities requiring an L1 DIN footprint. It provides stable electrical current to standard engine control modules (ECUs), audio installations, modern lighting systems, power windows, and central locking assemblies. Its compact dimensional footprint makes it an ideal direct-fit replacement for numerous European, Asian, and domestic automotive platforms built with non-start-stop electrical systems.
It is crucial to note that this battery is built utilizing conventional flooded lead-calcium chemistry. As a standard Starting, Lighting, and Ignition (SLI) power unit, it is not engineered for vehicles equipped with micro-hybrid Start-Stop technologies, regenerative braking recuperation, or smart alternator coasting systems. Advanced Start-Stop vehicles mandate Enhanced Flooded Batteries (EFB) or Absorbent Glass Mat (AGM) power sources to withstand continuous high-frequency micro-cycling at partial states of charge. Installing a standard SLI battery like the B545000040 into a regenerative Start-Stop powertrain will lead to rapid capacity loss and shortened service life. However, for non-start-stop passenger cars, lightweight machinery, and vehicles demanding dependable 12V starting support, this battery provides optimal efficiency and factory-grade reliability.
To maximize the service life and deliver seamless performance from your Sinergy B545000040 battery, adhere strictly to professional installation techniques. Prior to installation, ensure the engine ignition and all auxiliary electrical accessories are completely turned off. When extracting the obsolete battery, always detach the negative (black / ground) lead first, followed by the positive (red) lead. Inspect the battery tray and base clamp brackets, removing any accumulated debris, road grime, or corrosion using a wire brush and a neutralizing baking soda solution.
Inspect the terminal clamps for oxidation, scoring, or surface contamination. Clean the interior surface of the vehicle cable clamps thoroughly before setting the new Sinergy unit into place, ensuring the B13 base ledge fits flush inside the battery tray hold-down recess. Fasten the hold-down clamp securely to prevent physical vibration, taking care not to overtighten and deform the polypropylene housing. Connect the positive terminal clamp first, followed by the negative terminal clamp, torqueing the terminal nuts to approximately 5 to 7 Nm. A light coating of technical petroleum jelly or specialized battery terminal dielectric grease over the secured terminals will guard against atmospheric moisture and galvanic oxidation. For vehicles driven infrequently or stored over winter seasons, maintain the battery using an intelligent multi-stage float charger set to a calcium charging profile (14.4V float threshold).
No. The Sinergy B545000040 is a conventional flooded Calcium-Calcium (SLI) starter battery. It is engineered for standard automotive electrical systems and is not built to withstand the rigorous, repetitive deep micro-cycles or rapid dynamic charge acceptance mandated by Start-Stop systems. If your vehicle utilizes Start-Stop or regenerative braking, you must select an AGM or EFB replacement to maintain electrical compliance.
The Cold Cranking Amperes (CCA) rating of 400A (EN) measures the discharge current that the 12V battery can deliver at minus 18 degrees Celsius (-18C) for 10 seconds while sustaining a terminal voltage of at least 7.5 Volts under the European EN test standard. This guarantees that your starter motor receives ample cranking torque and rotational speed even during freezing winter temperatures.
No. This battery features a Sealed Maintenance-Free (SMF) calcium-lead configuration. The internal chemistry virtually eliminates water decomposition and gassing under nominal alternator charging voltages (13.8V to 14.4V). The labyrinth lid design captures and condenses trace acid vapors back into the reservoirs, meaning it never requires electrolyte inspection or distilled water replenishment.
The Sinergy B545000040 utilizes standard Layout 0 (Right Hand Positive). When you position the battery with the terminals closest to your body, the positive post (+, colored red or marked with a plus sign) is located on the right-hand side, and the negative post (-, marked with a minus sign) is on the left. Always verify your existing cable reach and polarity orientation prior to installation.
When charging the Sinergy B545000040 externally, use a smart micro-processor controlled battery charger with an output current rated between 4A and 5A (roughly 10 percent of the nominal 45Ah capacity). The bulk charging voltage should peak between 14.4V and 14.7V at 25 degrees Celsius, dropping down to a float voltage of 13.5V to 13.8V once the battery achieves full saturation.
| Weight | 6967131678 kg |
|---|---|
| Dimensions | 17.5 × 17.5 × 19 cm |
Verified technical specifications, vehicle compatibility, and maintenance answers.
No. The Sinergy B545000040 is a standard conventional flooded starter battery engineered specifically for traditional internal combustion engines (typically compact to subcompact petrol vehicles). It is not designed to endure the high cyclic frequency, continuous micro-cycling, or regenerative braking charge acceptance required by micro-hybrid vehicles. Installing this battery in an active Start-Stop vehicle will accelerate active mass shed, induce early plate degradation, and cause premature battery failure within 3 to 6 months, which will also void the manufacturer warranty. Start-Stop applications mandate EFB or AGM technology.
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