# Fulmen FB712 · Car battery 12V 71Ah 670A

![Fulmen FB712 · Car battery 12V 71Ah 670A](https://bateriasonline.es/2967-home_default/fulmen-fb712.jpg)

> Fulmen FB712: 71 Ah car battery, 670 A (EN), 278×175×175 mm, positive terminal on the right, LB3 case. Equivalent to Exide EB712 and Tudor TB712.

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

- **Canonical URL**: https://bateriasonline.es/en/fulmen-fb712
- **Language**: en
- **Brand**: Fulmen
- **Reference**: BOL-FULMEN-FB712
- **EAN**: 3661024044646
- **MPN**: FB712
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulmen |
| Range | FULMEN Formula |
| Application | Cars |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 71 Ah |
| Cold cranking amps (EN) | 670 A |
| Length | 278 mm |
| Width | 175 mm |
| Height | 175 mm |
| Weight | 15.3 kg |
| Polarity | Positive terminal on the right |
| Case size | LB3 (278 × 175 × 175 mm) |

## Quick description

The Fulmen FB712 is a car battery with 12 V, 71 Ah and 670 A cold cranking current, case size LB3 (278 × 175 × 175 mm), with the positive terminal on the right.

## Description

## Who the Fulmen FB712 is for

The Fulmen FB712 is made for petrol and diesel cars without automatic engine stop. The FB712 covers the daily routine of a car without automatic engine stop: cold starts, short trips and loads with the ignition off.
At 71 Ah it sits in the range of compact and mid-size diesels, SUVs and MPVs. The FB712 belongs to the Fulmen FULMEN Formula range. [See all Fulmen batteries](https://bateriasonline.es/en/fulmen-batteries)

## Part numbers and codes for the Fulmen FB712

Shops, garages and catalogues identify the FB712 with these codes:

| Commercial reference | FB712 |
|---|---|
| EAN | 3661024044646 |
| Case size (EN) | LB3 |

## Fulmen FB712 vs FA722, FB740 and FC700

Torn between the FB712 and another similar Fulmen? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulmen FB712 (this one) | 71 Ah | 670 A | 278 × 175 × 175 | right | 15.3 kg |
| Fulmen FA722 | 72 Ah | 720 A | 278 × 175 × 175 | right | 15.9 kg |
| Fulmen FB740 | 74 Ah | 680 A | 278 × 175 × 190 | right | 16.6 kg |
| Fulmen FC700 | 70 Ah | 640 A | 278 × 175 × 190 | right | 16 kg |
| Fulmen FC652 | 65 Ah | 540 A | 278 × 175 × 175 | right | 14.5 kg |

- Fulmen FA722: 1 Ah more, 50 A more cranking power, the same LB3 case.
- Fulmen FB740: 3 Ah more, 10 A more cranking power, a different height (190 mm instead of 175 mm, L3). It only fits if there is room for 190 mm of height.
- Fulmen FC700: 1 Ah less, 30 A less cranking power, a different height (190 mm instead of 175 mm, L3). It only fits if there is room for 190 mm of height.
- Fulmen FC652: 6 Ah less, 130 A less cranking power, the same LB3 case.

## Equivalents and alternatives to the Fulmen FB712

Batteries that fit the FB712's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the FB712.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EB712 | Lead-acid | 71 Ah | 670 A | 278 × 175 × 175 |
| Tudor TB712 | Lead-acid | 71 Ah | 670 A | 278 × 175 × 175 |
| Deta DB712 | Lead-acid | 71 Ah | 670 A | 278 × 175 × 175 |
| Varta E43 | Lead-acid | 72 Ah | 680 A | 278 × 175 × 175 |
| Kronobat PB-72.0B | Lead-acid | 72 Ah | 680 A | 278 × 175 × 175 |
| Varta E9 | Lead-acid | 70 Ah | 640 A | 278 × 175 × 175 |

Its Bosch equivalent is the Bosch S4 007, the same as for the Varta E43. Bosch is not part of our catalogue; we list it so you can compare.

## Lead-acid technology in the FB712

Inside, the FB712 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.

## Check this before ordering the Fulmen FB712

- If your car has Start-Stop, the FB712 is not the right one: it needs an EFB or an AGM.
- The FB712 delivers 670 A cold cranking (EN standard); do not go below what your original battery states.
- Your current battery should say about 71 Ah; a little more is also fine.
- Polarity of the FB712: positive terminal on the right (if yours has it on the other side, the cables will not reach).
- The FB712 needs 278 × 175 × 175 mm of space (European case size LB3): measure it with the hold-down clamp in place.

## Frequently asked questions about the Fulmen FB712

### FB712 or FA722: which one suits me?

Compared with the FB712, the Fulmen FA722 has 1 Ah more and 50 A more cranking power. If your current battery says 720 A or more, choose the FA722; if it says 670 A or less, the FB712 is enough. Both measure 278 × 175 × 175 mm, so they fit the same tray.

### Fulmen FB712 or FB740/FC700: what changes?

Mainly the height: the FB712 is 175 mm tall (LB3) and the Fulmen FB740 190 mm (L3), with the same length and width. In capacity and cranking power, the FB740 offers 74 Ah and 680 A against 71 Ah and 670 A. The Fulmen FC700 is 190 mm tall, with 70 Ah and 640 A. Before choosing between the FB712 and the FB740, measure the free height of the battery compartment with the cover or bonnet closed.

### Can the Fulmen FB712 be used in a car with Start-Stop?

No. The FB712 is a lead-acid battery for cars without automatic engine stop; Start-Stop needs an EFB or an AGM.

### How much does the Fulmen FB712 weigh?

15.3 kg, with 71 Ah of capacity. For reference, the Fulmen FA722 (72 Ah) weighs 15.9 kg.

### Which battery is equivalent to the Fulmen FB712?

With the same dimensions, polarity and similar capacity you have the Exide EB712, Tudor TB712 and Deta DB712. As the FB712 is a conventional battery, an EFB or AGM of the same size also works. Its Bosch equivalent is the Bosch S4 007, the same as for the Varta E43. Bosch is not part of our catalogue; we list it so you can compare.

### What case size is the Fulmen FB712?

Case size LB3: 278 × 175 × 175 mm. The FB712 fits any standard LB3 battery tray such as the Exide EB712.

### Which side is the positive terminal on the Fulmen FB712?

On the FB712, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

## More batteries to compare with the FB712

- [More car batteries](https://bateriasonline.es/en/car-batteries)
- [Full Fulmen catalogue](https://bateriasonline.es/en/fulmen-batteries)
- [Varta E38](https://bateriasonline.es/en/varta-e38) · 74 Ah, 750 A, 278×175×175 mm
- [Exide EA722](https://bateriasonline.es/en/exide-ea722) · 72 Ah, 720 A, 278×175×175 mm
- [Tudor TA722](https://bateriasonline.es/en/tudor-ta722) · 72 Ah, 720 A, 278×175×175 mm

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