Specifications
| Brand | Fulmen |
|---|---|
| Part number | FB440 |
| Voltage (V) | 12 |
| Capacity (C20) | 44Ah (c20) |
| Technology | Lead-acid |
| Length | 175 mm |
| Width | 175 mm |
| Height | 190 mm |
| Weight | 10.70 Kgs |
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Fulmen FB440 12V 44Ah 400A 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).

With 44 Ah at 12 V and 400 A of cold cranking current (EN), the Fulmen FB440 from the Formula range is a starter battery built for passenger cars with conventional starting, without a Start-Stop system. Measuring 175 × 175 × 190 mm and the positive terminal on the right, it is the direct replacement for cars fitted from the factory with a 44 Ah battery of this format.
It has external dimensions of 175 × 175 × 190 mm and weighs 10.70 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. 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.
This battery appears as compatible in more than 138 vehicles from manufacturers such as Fiat, Aixam, Citroën, Lancia, Ford and Toyota. If you are looking for a battery for a Fiat or Aixam with these dimensions, the FB440 is one of the usual replacement references. Models from Chevrolet, Peugeot, Ligier, Volkswagen, Smart, Microcar, Seat and Skoda are added to that list. It is checked against 107 original-equipment references from different manufacturers.
The FB440 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.
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. We guarantee that every Fulmen arrives new, charged and with the manufacturer's full warranty.
The Fulmen FB440 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.
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.
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 and Canary 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.
Data sheet
Specific References
| Brand | Fulmen |
|---|---|
| Manufacturer range | FULMEN Formula |
| Manufacturer reference (MPN) | FB440 |
| EAN-13 barcode | 3661024044509 |
| Dimensions (length × width × height) | 175 × 175 × 190 mm (175x175x190) |
The Fulmen FB440 is interchangeable with these equivalent references: TB440 (Tudor), B36 (Varta), EB440 (Exide), EC400 (Exide), TC400 (Tudor).
| Product | Specifications | Technology | Price |
|---|---|---|---|
|
|
12V 44Ah 400A | Lead-acid | |
|
|
12V 44Ah 400A | Lead-acid | €47.30 |
|
|
12V 44Ah 420A | Lead-acid | €44.80 |
|
|
12V 44Ah 400A | Lead-acid | €78.95 |
|
|
12V 40Ah 320A | Lead-acid | €72.95 |
|
|
12V 40Ah 320A | Lead-acid | €63.70 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
The Fulmen FB440 fits 138 vehicles. Most searched below:
Step-by-step guide to replace your car battery in 15-30 minutes (longer if the battery is under the seat or in the boot) without losing vehicle settings.
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Open the bonnet. The battery is usually in the engine bay, but in many modern cars it may be in the boot or under the passenger seat. Check the manual if you cannot find it.
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Loosen the bottom hold-down clamp with the same wrench. Lift the battery carefully (it can weigh 15-25 kg). Clean the tray with a brush and baking soda if there is corrosion.
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Close the bonnet. Start the engine to confirm everything works. On cars with Start-Stop or a BMS, you may need to register the battery via OBD so the alternator applies the correct charging profile.
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 (−) 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 — 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.
Expected lifespan of the Fulmen FB440 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.
Dimensions (length × width × height) are 175×175×190 mm — also written as 175x175x190 mm — 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.
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 FB440 fits 138 verified vehicle versions in our database.
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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