# Car battery Fulmen FA852 12V 85Ah 800A ![Car battery Fulmen FA852 12V 85Ah 800A](https://baterias.com/3655-home_default/battery-fulmen-fa852-12v-85ah-800a.jpg) > Fulmen FA852 car battery 12V 85Ah 800A. Formula Xtreme range. Dimensions 315Γ—175Γ—175 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-fa852-12v-85ah-800a - **Language**: en-GB - **Brand**: Fulmen - **Reference**: BCOM-FULMEN-FA852 - **EAN**: 3661024044295 - **MPN**: FA852 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULMEN | | Reference | FA852 | | Model | FULMEN Formula Xtreme | | Voltage (V) | 12 V | | Largo | 315 mm | | Ancho | 175 mm | | Alto | 175 mm | | Peso | 18.6 kg | | TecnologΓ­a | Lead-acid | | EAN | 3661024044295 | | Terminal layout | Positive terminal on the right | | Hold down | B13 | | Cold cranking amps (EN) | 800 A | | Capacity (C20) | 85 Ah (c20) | | Case type | LB4 | ## Quick description **Fulmen FA852 12V 85Ah 800A** is a ready-to-use passenger car battery, sealed and maintenance-free. Delivers the cranking amps the engine needs in cold weather and keeps stable voltage for modern car loads (ECU, sensors, 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 85 Ah C20 πŸ”‹ Cold cranking 800 A EN-1 πŸ“ Dimensions 315Γ—175Γ—175 mm βš™οΈ Technology Lead-acid 🧭 Polarity Positive on the right βš–οΈ Weight 18,6 kg 🏷️ Model FULMEN Formula Xtreme ## Description ## Car battery Fulmen FA852 Formula Xtreme 85Ah 800A 12V 12*V* Voltage 85*Ah* Capacity 800*A* Cold cranking 18.60*kg* Weight The **Fulmen FA852 car battery** is rated at **12 V**, **85 Ah** and **800 A** of cold cranking current (EN) from the **Formula Xtreme** range, and is designed for passenger cars with conventional starting, without a Start-Stop system. It measures 315 Γ— 175 Γ— 175 mm and the positive terminal on the right, the format sought by anyone replacing a 85 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 FA852 is for With 85 Ah, the Fulmen FA852 is sized for passenger cars with conventional starting, without a Start-Stop system. It is a direct replacement for the original battery as long as dimensions and terminals match. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 18.60 kg and B13 hold-down. ### Will it fit your current battery tray? In terms of format, the Fulmen FA852 measures 315 Γ— 175 Γ— 175 mm (length Γ— width Γ— height) and weighs 18.60 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. ### Fulmen: the maker behind the FA852 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. All the Fulmen batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### The Fulmen FA852: Formula Xtreme range and conventional lead-acid technology The **Formula Xtreme** is the Fulmen range the FA852 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. 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. ### Usage and maintenance tips Avoid leaving lights or accessories on with the engine off: most batteries fail not through defects but through repeated deep discharges. 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 FA852 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. ### When you get it and how to return it 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 is the Fulmen FA852 battery installed in the vehicle? 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 long does the Fulmen FA852 battery last? Expected lifespan of the Fulmen FA852 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 size is this battery? Dimensions (length Γ— width Γ— height) are 315Γ—175Γ—175 mm β€” also written as 315x175x175 mm and correspond to the European LB4 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 FA852 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 FA852 fits 139 verified vehicle versions in our database. ### Which interchangeable batteries are there for this one? 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. ## Compatible vehicles This battery fits 139 vehicles. Most searched: - [FORD TRANSIT Van (FA\_ \_) (2000)](https://baterias.com/gb/car-batteries/ford/transit-van-fa) - [FORD S-MAX (WA6) (2006)](https://baterias.com/gb/car-batteries/ford/s-max-wa6) - [RENAULT ESPACE IV (JK0/1\_) (2002)](https://baterias.com/gb/car-batteries/renault/espace-iv-jk01) - [FORD TRANSIT Bus (FD\_ \_, FB\_ \_, FS\_ \_, FZ\_ \_, FC\_ \_) (2000)](https://baterias.com/gb/car-batteries/ford/transit-bus-fd_-_-fb_-_-fs_-_-fz_-_-fc) - [NISSAN PRIMASTAR Bus (X83) (2001)](https://baterias.com/gb/car-batteries/nissan/primastar-bus-x83) - [BMW 3 (E46) (1997)](https://baterias.com/gb/car-batteries/bmw/3-e46) - [NISSAN PRIMASTAR Van (X83) (2002)](https://baterias.com/gb/car-batteries/nissan/primastar-van-x83) - [RENAULT LAGUNA III (BT0/1) (2007)](https://baterias.com/gb/car-batteries/renault/laguna-iii-bt01) - [MERCEDES-BENZ C-CLASS (W204) (2007)](https://baterias.com/gb/car-batteries/mercedes-benz/c-class-w204) - [BMW 3 (E90) (2004)](https://baterias.com/gb/car-batteries/bmw/3-e90) ## Equivalent batteries - [TUDOR TA852](https://baterias.com/gb/battery-tudor-ta852-85ah-800a) - [TUDOR TB802](https://baterias.com/gb/battery-tudor-tb802-80ah-700a) - [VARTA F17](https://baterias.com/gb/battery-varta-f17-12v-80ah-740a) - [VARTA F18](https://baterias.com/gb/battery-varta-f18-12v-85ah-800a) - [EXIDE EA852](https://baterias.com/gb/battery-exide-ea852-12v-85ah-800a) - [EXIDE EB802](https://baterias.com/gb/battery-exide-eb802-12v-80ah-700a) ## 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*