# Car battery Fulmen FB451 12V 45Ah 330A ![Car battery Fulmen FB451 12V 45Ah 330A](https://baterias.com/3667-home_default/battery-fulmen-fb451-12v-45ah-330a.jpg) > Fulmen FB451 car battery 12V 45Ah 330A. Formula range. Dimensions 220Γ—135Γ—225 mm, + terminal on the left. Check fitment by plate. **Category:** [Car Batteries](https://baterias.com/gb/car-batteries) β†’ [Fulmen](https://baterias.com/gb/fulmen) - **Canonical URL**: https://baterias.com/gb/battery-fulmen-fb451-12v-45ah-330a - **Language**: en-GB - **Brand**: Fulmen - **Reference**: BCOM-FULMEN-FB451 - **EAN**: 3661024044486 - **MPN**: FB451 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULMEN | | Reference | FB451 | | Model | FULMEN Formula | | Voltage (V) | 12 V | | Largo | 220 mm | | Ancho | 135 mm | | Alto | 225 mm | | Peso | 12.5 kg | | TecnologΓ­a | Lead-acid | | EAN | 3661024044486 | | Terminal layout | Positive terminal on the left | | Hold down | B01 | | Cold cranking amps (EN) | 330 A | | Capacity (C20) | 45 Ah (c20) | | Case type | E02 | ## Quick description **Fulmen FB451 12V 45Ah 330A** is a starter battery with OEM-equivalent quality, designed for modern passenger cars. Delivers reliable cold-cranks even after weeks of inactivity and supports stable auxiliary loads (lights, climate control, infotainment). ### Why this car battery? - **Original-equipment quality** without dealership prices - **Lasts 4 to 6 years** buy once instead of twice - **Real human tech support** if you have any doubts before buying πŸ”Œ Voltage 12 V ⚑ Capacity 45 Ah C20 πŸ”‹ Cold cranking 330 A EN-1 πŸ“ Dimensions 220Γ—135Γ—225 mm βš™οΈ Technology Lead-acid 🧭 Polarity Positive on the left βš–οΈ Weight 12,5 kg 🏷️ Model FULMEN Formula ## Description ## Car battery Fulmen FB451 Formula 45Ah 330A 12V 12*V* Voltage 45*Ah* Capacity 330*A* Cold cranking 12.50*kg* Weight The **Fulmen FB451** from the **Formula** range delivers **45 Ah** and **330 A** of cold cranking current (EN) at **12 V**: the usual specification for passenger cars with conventional starting, without a Start-Stop system. Measuring 220 Γ— 135 Γ— 225 mm and the positive terminal on the left, it is the direct replacement for cars fitted from the factory with a 45 Ah battery of this format. - Good balance of capacity, cranking power and price. - Stable voltage for the vehicle electronics (ECU, sensors, climate control). - Low self-discharge: copes with long stops without losing charge. - Designed to last several years under normal daily use. ### What the Fulmen FB451 is for Designed for passenger cars with conventional starting, without a Start-Stop system, the Fulmen FB451 is the direct replacement when your vehicle uses a 45 Ah battery of this format. Before buying, compare dimensions, terminals and capacity with the battery you are replacing. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 12.50 kg and B01 hold-down. ### Will it fit your current battery tray? In terms of format, the Fulmen FB451 measures 220 Γ— 135 Γ— 225 mm (length Γ— width Γ— height) and weighs 12.50 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B01 hold-down, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### Fulmen: the maker behind the FB451 Fulmen is the historic French brand of the Exide group: batteries made on the same lines and with the same technology as original equipment, widely used by workshops across Europe. All the Fulmen batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### The Fulmen FB451: Formula range and conventional lead-acid technology The FB451 is part of the Fulmen **Formula** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. The conventional lead-acid battery remains the most widespread technology thanks to its balance of capacity, cranking current and price. Well maintained and kept charged, it offers years of reliable service in vehicles without Start-Stop. ### Usage and maintenance tips On batteries with filler caps, check the electrolyte level and top up only with distilled water. Keep the terminals clean and tight, and check that the resting voltage does not drop below 12.4 V: below that it is time to recharge. ### Official warranty The Fulmen FB451 comes with the **manufacturer's official warranty** against manufacturing defects; the exact period is stated in the brand's conditions. If it fails through a defect within the period, we replace it free of charge. ### Shipping, delivery and returns Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships. ## Frequently asked questions ### How do I change this battery step by step? In most cars it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (βˆ’) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How many years does this battery last? Expected lifespan of the Fulmen FB451 is 4 to 6 years in regular car use without Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What are the dimensions of the Fulmen FB451 battery? Dimensions (length Γ— width Γ— height) are 220Γ—135Γ—225 mm β€” also written as 220x135x225 mm β€” following the European DIN standard. Always measure the space in your car before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### Will the Fulmen FB451 battery fit my car? Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The FB451 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the FB451 model? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology β€” an EFB cannot be replaced with a conventional battery in Start-Stop cars. See the "Equivalents" section to view recommended options at the same performance level. ## Equivalent batteries - [TUDOR TB451](https://baterias.com/gb/battery-tudor-tb451-45ah-330a) - [VARTA B24](https://baterias.com/gb/battery-varta-b24-12v-45ah-300a) - [EXIDE EB451](https://baterias.com/gb/battery-exide-eb451-12v-45ah-330a) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-09-28*