# Fulmen FB741 · Car battery 12V 74Ah 680A

![Fulmen FB741 · Car battery 12V 74Ah 680A](https://bateriasonline.es/2973-home_default/fulmen-fb741.jpg)

> Fulmen FB741: 74 Ah car battery, 680 A (EN), 278×175×190 mm, positive terminal on the left, L3 case. Equivalent to Exide EB741 and Tudor TB741.

**Category:** [Car batteries](https://bateriasonline.es/en/car-batteries) → [Fulmen](https://bateriasonline.es/en/fulmen-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulmen-fb741
- **Language**: en
- **Brand**: Fulmen
- **Reference**: BOL-FULMEN-FB741
- **EAN**: 3661024044561
- **MPN**: FB741
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulmen |
| Range | FULMEN Formula |
| Application | Cars |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 74 Ah |
| Cold cranking amps (EN) | 680 A |
| Length | 278 mm |
| Width | 175 mm |
| Height | 190 mm |
| Weight | 16.6 kg |
| Polarity | Positive terminal on the left |
| Case size | L3 (278 × 175 × 190 mm) |

## Quick description

Fulmen FB741: car battery with 12 V, 74 Ah and 680 A cold cranking current, case size L3 (278 × 175 × 190 mm), with the positive terminal on the left. Need the positive terminal on the right? The same battery is the Fulmen FB740.

## Description

## Who the Fulmen FB741 is for

The Fulmen FB741 is made for petrol and diesel cars without automatic engine stop. If your car has no Start-Stop and had a 74 Ah battery, the FB741 is a direct replacement.
At 74 Ah it sits in the range of compact and mid-size diesels, SUVs and MPVs. The FB741 belongs to the Fulmen FULMEN Formula range. [See all Fulmen batteries](https://bateriasonline.es/en/fulmen-batteries)

## Part numbers and codes for the Fulmen FB741

Shops, garages and catalogues identify the FB741 with these codes:

| Commercial reference | FB741 |
|---|---|
| EAN | 3661024044561 |
| Case size (EN) | L3 |
| Not to be confused with | Fulmen FB740 (74 Ah, 680 A, positive terminal on the right) |

## Fulmen FB741 vs FB621, FB740 and FB705

The real differences between the FB741 and the closest Fulmen models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulmen FB741 (this one) | 74 Ah | 680 A | 278 × 175 × 190 | left | 16.6 kg |
| Fulmen FB621 | 62 Ah | 540 A | 242 × 175 × 190 | left | 14.4 kg |
| Fulmen FB740 | 74 Ah | 680 A | 278 × 175 × 190 | right | 16.6 kg |
| Fulmen FB705 | 70 Ah | 540 A | 270 × 173 × 222 | left | 16.1 kg |

- Fulmen FB621: 12 Ah less, 140 A less cranking power, a different case (242 × 175 × 190 mm).
- Fulmen FB740: identical to the FB741 except for the positive terminal, which is on the other side (positive terminal on the right).
- Fulmen FB705: 4 Ah less, 140 A less cranking power, a different case (270 × 173 × 222 mm).

## Equivalents and alternatives to the Fulmen FB741

Batteries that fit the FB741's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the FB741.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EB741 | Lead-acid | 74 Ah | 680 A | 278 × 175 × 190 |
| Varta E12 | Lead-acid | 74 Ah | 680 A | 278 × 175 × 190 |
| Kronobat PB-74.1B | Lead-acid | 74 Ah | 680 A | 278 × 175 × 190 |
| Tudor TB741 | Lead-acid | 74 Ah | 680 A | 278 × 175 × 190 |
| Deta DB741 | Lead-acid | 74 Ah | 680 A | 278 × 175 × 190 |

Its Bosch equivalent is the Bosch S4 009, the same as for the Varta E12. Bosch is not part of our catalogue; we list it so you can compare.

## Lead-acid technology in the FB741

Inside, the FB741 is classic lead-acid: liquid electrolyte and lead plates. It is a robust, well-known technology with a good capacity-to-price ratio, and still the basis of most cars, trucks and traction equipment.

## What to look at before buying the FB741

- If your car has Start-Stop, the FB741 is not the right one: it needs an EFB or an AGM.
- Check the EN amps on your battery: if it says 680 A or less, the FB741 covers your engine.
- Capacity of the FB741: 74 Ah; the same as your current battery or slightly more is fine.
- With the terminals facing you, the positive terminal of the FB741 is on the left.
- Length, width and height of the FB741: 278 × 175 × 190 mm (European case size L3).

## Frequently asked questions about the Fulmen FB741

### FB741 or FB621: which one suits me?

Compared with the FB741, the Fulmen FB621 has 12 Ah less and 140 A less cranking power. The FB741 cranks harder; the FB621 is only a good option if your original battery says 540 A or less. Mind the space: the FB621 measures 242 × 175 × 190 mm.

### Fulmen FB741 or FB740: what is the difference?

Only the polarity: the FB741 has the positive terminal on the left and the FB740 the positive terminal on the right. Capacity (74 Ah), cranking power and dimensions are identical.

### Can the Fulmen FB741 be used in a car with Start-Stop?

No. The FB741 is a lead-acid battery for cars without automatic engine stop; Start-Stop needs an EFB or an AGM.

### How much does the Fulmen FB741 weigh?

16.6 kg, with 74 Ah of capacity. For reference, the Fulmen FB621 (62 Ah) weighs 14.4 kg.

### Which battery is equivalent to the Fulmen FB741?

With the same dimensions, polarity and similar capacity you have the Exide EB741, Varta E12 and Kronobat PB-74.1B. As the FB741 is a conventional battery, an EFB or AGM of the same size also works. Its Bosch equivalent is the Bosch S4 009, the same as for the Varta E12. Bosch is not part of our catalogue; we list it so you can compare.

### What case size is the Fulmen FB741?

Case size L3: 278 × 175 × 190 mm. The FB741 fits any standard L3 battery tray such as the Exide EB741.

### Does the new battery need to be registered in the car?

In cars with energy management (common since 2010) it is worth registering the battery in the control unit so it adjusts charging. In older cars you just connect it.

## Keep comparing: alternatives to the FB741

- [All car batteries](https://bateriasonline.es/en/car-batteries)
- [More Fulmen models](https://bateriasonline.es/en/fulmen-batteries)
- [Exide EB741](https://bateriasonline.es/en/exide-eb741) · 74 Ah, 680 A, 278×175×190 mm
- [Varta E12](https://bateriasonline.es/en/varta-e12) · 74 Ah, 680 A, 278×175×190 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*