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Fulmen FB852 · Car battery 12V 85Ah 760A

Specifications

BrandFulmen
Part numberFB852
Voltage (V)12
Capacity (C20)85Ah (c20)
Cold cranking amps (EN)760A
TechnologyLead-acid
Length353 mm
Width175 mm
Height175 mm
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Fulmen FB852 12V 85Ah 760A 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 qualitywithout dealership prices
  • Lasts 4 to 6 yearsbuy once instead of twice
  • Real human tech supportif you have any doubts before buying
Voltage
12 V
Capacity
85 Ah C20
Cold cranking
760 A EN-1
Dimensions
353×175×175 mm
Technology
Lead-acid
Polarity
Positive on the right
Weight
19,4 kg
Model
FULMEN Formula
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Car battery Fulmen FB852 Formula 85Ah 760A 12V

12VVoltage
85AhCapacity
760ACold cranking
19.40kgWeight

The Fulmen FB852 from the Formula range delivers 85 Ah and 760 A of cold cranking current (EN) at 12 V: the usual specification for passenger cars with conventional starting, without a Start-Stop system. It measures 353 × 175 × 175 mm and the positive terminal on the right, the format sought by anyone replacing a 85 Ah battery in cars.

In short: the Fulmen FB852 (85 Ah, 760 A, 353 × 175 × 175 mm, positive terminal on the right). It is a conventional battery for cars without Start-Stop: if yours has Start-Stop, it needs an EFB or AGM battery of the same size. Verified equivalent alternatives: Tudor TB852 and Exide EB852.

  • 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 FB852 is for

With 85 Ah, the Fulmen FB852 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 19.40 kg, 1 terminals and B13 hold-down.

Will it fit your current battery tray?

In terms of format, the Fulmen FB852 measures 353 × 175 × 175 mm (length × width × height) and weighs 19.40 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 and 1 terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

The Fulmen FB852: Formula range and conventional lead-acid technology

Within the Fulmen catalogue, the Formula series groups the references designed for this use. The FB852 is the 85 Ah model of that family, with the same performance as its siblings in other sizes.

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.

Why choose Fulmen batteries

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.

Warranty and coverage

The Fulmen FB852 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

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. Avoid leaving lights or accessories on with the engine off: most batteries fail not through defects but through repeated deep discharges.

When you get it and how to return it

Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 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.

  • Reference
    BCOM-FULMEN-FB852

Data sheet

  • Brand
    FULMEN
  • Reference
    FB852
  • Model
    FULMEN Formula
  • Voltage (V)
    12
  • Length
    353 mm
  • Width
    175 mm
  • Height
    175 mm
  • Weight
    19.40 Kgs
  • Technology
    Lead-acid
  • EAN
    3661024044660
  • Terminal layout
    Positive terminal on the right
  • Terminal type
    1
  • Hold-down
    B13
  • Cold cranking amps (EN)
    760A
  • Capacity (C20)
    85Ah (c20)
  • Case type
    LB5

Specific References

  • EAN13
    3661024044660
  • MPN
    FB852

Codes and references Fulmen FB852

Brand Fulmen
Manufacturer range FULMEN Formula
Manufacturer part number (MPN) FB852
EAN-13 barcode 3661024044660
European case size (EN 50342-2) LB5
Dimensions (length × width × height) 353 × 175 × 175 mm (353x175x175)

Comparison: Fulmen FB852 vs equivalents — alternatives with the same dimensions, Ah and CCA

The Fulmen FB852 is interchangeable with these equivalent references: TB852 (Tudor), EB852 (Exide), F5 (Varta), SD-88.0B (Kronobat).

Product Specifications Technology Price
Fulmen FB852 Fulmen FB852 This battery 12V 85Ah 760A Lead-acid
Tudor TB852 Tudor TB852 12V 85Ah 760A Lead-acid €109.20
Exide EB852 Exide EB852 12V 85Ah 760A Lead-acid €81.30
Varta F5 Varta F5 12V 88Ah 740A Lead-acid €138.60
Kronobat SD-88.0B Kronobat SD-88.0B 12V 88Ah 740A Lead-acid €97.50

Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.

Recommended accessories — complement the Fulmen FB852 with a charger or tester

Fitting it yourself? Step-by-step guide to replacing the battery →

Frequently asked questions

How is the Fulmen FB852 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 our blog. 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 (−) 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 — with positive on the right match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). 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 FB852 model?

Expected lifespan of the Fulmen FB852 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 FB852 model?

Dimensions (length × width × height) are 353×175×175 mm — also written as 353x175x175 mm and correspond to the European LB5 case size — 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.

Which side is the positive terminal on this battery?

Polarity: positive on the right. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.

Will the Fulmen FB852 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 — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The FB852 typically fits a wide range of European vehicles thanks to its standard DIN case format.

What are the equivalents of the FB852 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 — 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.


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