# Car battery Fulmen FB800 12V 80Ah 640A ![Car battery Fulmen FB800 12V 80Ah 640A](https://baterias.com/3686-home_default/battery-fulmen-fb800-12v-80ah-640a.jpg) > Fulmen FB800 car battery 12V 80Ah 640A. Formula range. Dimensions 315Γ—175Γ—190 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-fb800-12v-80ah-640a - **Language**: en-GB - **Brand**: Fulmen - **Reference**: BCOM-FULMEN-FB800 - **EAN**: 3661024046244 - **MPN**: FB800 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULMEN | | Reference | FB800 | | Model | FULMEN Formula | | Voltage (V) | 12 V | | Largo | 315 mm | | Ancho | 175 mm | | Alto | 190 mm | | Peso | 19 kg | | TecnologΓ­a | Lead-acid | | EAN | 3661024046244 | | Terminal layout | Positive terminal on the right | | Hold down | B13 | | Cold cranking amps (EN) | 640 A | | Capacity (C20) | 80 Ah (c20) | | Case type | L04 | ## Quick description **Fulmen FB800 12V 80Ah 640A** 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 80 Ah C20 πŸ”‹ Cold cranking 640 A EN-1 πŸ“ Dimensions 315Γ—175Γ—190 mm βš™οΈ Technology Lead-acid 🧭 Polarity Positive on the right βš–οΈ Weight 19 kg 🏷️ Model FULMEN Formula ## Description ## Car battery Fulmen FB800 Formula 80Ah 640A 12V 12*V* Voltage 80*Ah* Capacity 640*A* Cold cranking 19*kg* Weight With **80 Ah** at **12 V** and **640 A** of cold cranking current (EN), the **Fulmen FB800** from the **Formula** range is a starter battery built for passenger cars with conventional starting, without a Start-Stop system. It measures 315 Γ— 175 Γ— 190 mm and the positive terminal on the right, the format sought by anyone replacing a 80 Ah battery in cars. - Original-equipment build quality without the dealership price. - Direct replacement for the original battery in size and terminals. - Reliable cold starts, even after weeks without driving. - Conventional lead-acid: the most proven and economical technology. ### What the Fulmen FB800 is for The Fulmen FB800 covers the needs of passenger cars with conventional starting, without a Start-Stop system: reliable starting, stable voltage for the electronics and a service life of several years in daily use. Check that it matches your current battery in size and terminal position. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 19 kg and B13 hold-down. ### Size, terminals and hold-down of the Fulmen FB800 The Fulmen FB800 is made in the 315 Γ— 175 Γ— 190 mm format and weighs 19 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 B13 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. ### The Fulmen FB800: Formula range and conventional lead-acid technology The **Formula** is the Fulmen range the FB800 belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle. In a conventional battery the electrolyte is liquid and the lead plates are immersed in it. It is a mature, economical and easily recycled technology, ideal for starting vehicles in normal use. ### What Fulmen does differently With more than a century of history, Fulmen offers complete ranges for cars, trucks, motorcycles and leisure with the industrial quality of the Exide group. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Official warranty The Fulmen FB800 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. ### Care and maintenance Avoid leaving lights or accessories on with the engine off: most batteries fail not through defects but through repeated deep discharges. 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. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## 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 FB800 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 FB800 model? Dimensions (length Γ— width Γ— height) are 315Γ—175Γ—190 mm β€” also written as 315x175x190 mm and correspond to the European L4 case size 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 FB800 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 FB800 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the FB800 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 - [EXIDE EB800](https://baterias.com/gb/battery-exide-eb800-12v-80ah-640a) - [TUDOR TB800](https://baterias.com/gb/battery-tudor-tb800-12v-80ah-640a) - [VARTA N80](https://baterias.com/gb/battery-varta-n80-12v-80ah-800a) - [VARTA F21](https://baterias.com/gb/battery-varta-f21-agm-12v-80ah-800a) - [VARTA F19](https://baterias.com/gb/battery-varta-f19-12v-85ah-800a) - [VARTA F16](https://baterias.com/gb/battery-varta-f16-12v-80ah-740a) - [TUDOR TL800](https://baterias.com/gb/battery-tudor-tl800-80ah-720a) ## 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· 2026-09-30*