# Car battery Fulmen FC904 12V 90Ah 680A ![Car battery Fulmen FC904 12V 90Ah 680A](https://baterias.com/3701-home_default/battery-fulmen-fc904-12v-90ah-680a.jpg) > Fulmen FC904 car battery 12V 90Ah 680A. Standard range. Dimensions 306Γ—173Γ—222 mm, + terminal on the right. 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-fc904-12v-90ah-680a - **Language**: en-GB - **Brand**: Fulmen - **Reference**: BCOM-FULMEN-FC904 - **EAN**: 3661024044752 - **MPN**: FC904 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULMEN | | Reference | FC904 | | Model | FULMEN Standard | | Voltage (V) | 12 V | | Largo | 306 mm | | Ancho | 173 mm | | Alto | 222 mm | | Peso | 19.9 kg | | TecnologΓ­a | Lead-acid | | EAN | 3661024044752 | | Terminal layout | Positive terminal on the right | | Hold down | Korean B1 | | Cold cranking amps (EN) | 680 A | | Capacity (C20) | 90 Ah (c20) | | Case type | D31 | ## Quick description **Fulmen FC904 12V 90Ah 680A** is a passenger car battery with factory-guaranteed cranking power and extended service life. OEM quality at white-label prices: calcium-silver grids, low self-discharge and compatible with all modern electrical systems. ### 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 90 Ah C20 πŸ”‹ Cold cranking 680 A EN-1 πŸ“ Dimensions 306Γ—173Γ—222 mm βš™οΈ Technology Lead-acid 🧭 Polarity Positive on the right βš–οΈ Weight 19,9 kg 🏷️ Model FULMEN Standard ## Description ## Car battery Fulmen FC904 Standard 90Ah 680A 12V 12*V* Voltage 90*Ah* Capacity 680*A* Cold cranking 19.90*kg* Weight The **Fulmen FC904** from the **Standard** range delivers **90 Ah** and **680 A** of cold cranking current (EN) at **12 V**: the usual specification for passenger cars with conventional starting, without a Start-Stop system. It replaces the original battery without adaptation in cars with a 306 Γ— 173 Γ— 222 mm format: same 90 Ah capacity and the positive terminal on the right. - Conventional lead-acid: the most proven and economical technology. - Reliable cold starts, even after weeks without driving. - Direct replacement for the original battery in size and terminals. - Original-equipment build quality without the dealership price. ### Dimensions, polarity and mounting It has external dimensions of 306 Γ— 173 Γ— 222 mm and weighs 19.90 kg. The positive terminal on the right 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 Korean B1 hold-down, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters. ### What the Fulmen FC904 is for Designed for passenger cars with conventional starting, without a Start-Stop system, the Fulmen FC904 is the direct replacement when your vehicle uses a 90 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 19.90 kg and Korean B1 hold-down. ### The Fulmen FC904: Standard range and conventional lead-acid technology The FC904 is part of the Fulmen **Standard** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour. ### Fulmen: the maker behind the FC904 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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Manufacturer's warranty The Fulmen FC904 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. ### Usage and maintenance tips On batteries with filler caps, check the electrolyte level and top up only with distilled water. In normal daily use the alternator keeps the battery charged; if the car stands for weeks, a maintenance charge once a month prevents deep discharge. ### Shipping, delivery and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### How do I fit the FC904 model in my car? 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. ### What is the service life of the FC904 model? Expected lifespan of the Fulmen FC904 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 measurements of the FC904 model? Dimensions (length Γ— width Γ— height) are 306Γ—173Γ—222 mm β€” also written as 306x173x222 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. ### Is the FC904 valid for my vehicle? 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 FC904 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Fulmen FC904? 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 - [EXIDE EC904](https://baterias.com/gb/battery-exide-ec904-12v-90ah-680a) - [TUDOR TC904](https://baterias.com/gb/battery-tudor-tc904-12v-90ah-680a) - [TUDOR TB954](https://baterias.com/gb/battery-tudor-tb954-95ah-720a) - [TUDOR TA954](https://baterias.com/gb/battery-tudor-ta954-95ah-800a) - [EXIDE EA954](https://baterias.com/gb/battery-exide-ea954-12v-95ah-800a) - [TUDOR TL954](https://baterias.com/gb/battery-tudor-tl954-12v-95ah-800a) ## 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· 2026-09-29*