# Fulbat FDM12-700 · Dual-purpose marine battery 12V 140Ah 700A

![Fulbat FDM12-700 · Dual-purpose marine battery 12V 140Ah 700A](https://bateriasonline.es/456-home_default/fulbat-fdm12-700.jpg)

> Fulbat FDM12-700: 140 Ah dual-purpose marine battery, 700 A (EN), 512×188×218 mm, positive terminal on the left, carbon AGM. Ask for a no-obligation quote.

**Category:** [Dual-purpose marine batteries (starting and service)](https://bateriasonline.es/en/dual-purpose-marine-batteries) → [Fulbat](https://bateriasonline.es/en/fulbat-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulbat-fdm12-700
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FDM12-700
- **MPN**: FDM12-700
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT FDM Marine AGM Carbon |
| Application | Boats (starting and service) |
| Technology | Carbon AGM |
| Voltage | 12 V |
| Capacity | 140 Ah |
| Cold cranking amps (EN) | 700 A |
| Length | 512 mm |
| Width | 188 mm |
| Height | 218 mm |
| Weight | 42 kg |
| Polarity | Positive terminal on the left |
| Terminal type | AUTOMOTIVE |

## Quick description

The Fulbat FDM12-700 is a dual-purpose marine battery with 12 V, 140 Ah and 700 A cold cranking current, measuring 512 × 188 × 218 mm, with the positive terminal on the left.

## Description

## Where the Fulbat FDM12-700 fits

The Fulbat FDM12-700 is a dual-purpose marine battery: it starts the engine and, at the same time, powers lights, bilge pump and electronics while the boat is at anchor.
The FDM12-700 belongs to the Fulbat FULBAT FDM Marine AGM Carbon range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Inside the FDM12-700: carbon AGM technology

The FDM12-700 is an AGM battery with carbon added to the negative plates. It works well even when the charge is not completed every day, which is common in solar installations.

## Fulbat FDM12-700 vs FDM12-900 and FDM12-825-M31

Torn between the FDM12-700 and another similar Fulbat? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FDM12-700 (this one) | 140 Ah | 700 A | 512 × 188 × 218 | left | 42 kg |
| Fulbat FDM12-900 | 180 Ah | 900 A | 512 × 222 × 218 | left | 51 kg |
| Fulbat FDM12-825-M31 | 105 Ah | 825 A | 330 × 173 × 237 | left | 30.6 kg |

- Fulbat FDM12-900: 40 Ah more, 200 A more cranking power, a different case (512 × 222 × 218 mm).
- Fulbat FDM12-825-M31: 35 Ah less, 125 A more cranking power, a different case (330 × 173 × 237 mm).

## Equivalents and alternatives to the Fulbat FDM12-700

We have no other battery with exactly the dimensions and polarity of the FDM12-700. Browse the rest of our [dual-purpose marine batteries (starting and service)](https://bateriasonline.es/en/dual-purpose-marine-batteries) to compare close options.

## Part numbers and codes for the Fulbat FDM12-700

Look for any of these FDM12-700 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | FDM12-700 |
|---|---|
| Terminal type | AUTOMOTIVE |
| Not to be confused with | Fulbat FDM12-900 (180 Ah, 900 A) |

## Check this before ordering the Fulbat FDM12-700

- The FDM12-700 delivers 700 A cold cranking (EN standard); do not go below what your original battery states.
- With 140 Ah, the FDM12-700 replaces an original battery of that capacity or slightly less.
- The FDM12-700 has the positive terminal on the left: compare it with your current battery.
- Measure the space: the FDM12-700 takes up 512 × 188 × 218 mm.

## Frequently asked questions about the Fulbat FDM12-700

### FDM12-700 or FDM12-900: which one suits me?

Compared with the FDM12-700, the Fulbat FDM12-900 has 40 Ah more and 200 A more cranking power. If your current battery says 900 A or more, choose the FDM12-900; if it says 700 A or less, the FDM12-700 is enough. Mind the space: the FDM12-900 measures 512 × 222 × 218 mm.

### How much does the Fulbat FDM12-700 weigh?

42 kg, with 140 Ah of capacity. For reference, the Fulbat FDM12-900 (180 Ah) weighs 51 kg.

### Which side is the positive terminal on the Fulbat FDM12-700?

On the FDM12-700, the positive terminal is on the left with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

## Other options if you are unsure about the FDM12-700

- [More dual-purpose marine batteries (starting and service)](https://bateriasonline.es/en/dual-purpose-marine-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)

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