# Fullriver DC55-12 · Boat battery 12V 55Ah 400A

![Fullriver DC55-12 · Boat battery 12V 55Ah 400A](https://bateriasonline.es/2558-home_default/fullriver-dc55-12.jpg)

> Fullriver DC55-12: 55 Ah boat battery, 400 A (EN), 229×138×212 mm, AGM. VAT included and shipping cost shown before you pay.

**Category:** [Marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries) → [Fullriver](https://bateriasonline.es/en/fullriver-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fullriver-dc55-12
- **Language**: en
- **Brand**: Fullriver
- **Reference**: BOL-FULLRIVER-DC55-12
- **MPN**: DC55-12
- **Price**: 203,46 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fullriver |
| Range | DC Series |
| Application | Boats |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 55 Ah |
| Cold cranking amps (EN) | 400 A |
| Length | 229 mm |
| Width | 138 mm |
| Height | 212 mm |
| Weight | 17.6 kg |
| Terminal type | M6 |

## Quick description

Fullriver DC55-12: boat battery with 12 V, 55 Ah and 400 A cold cranking current, measuring 229 × 138 × 212 mm.

## Description

## The Fullriver DC55-12 at a glance

The Fullriver DC55-12 is made for marine use. Fit the DC55-12 securely on board and away from bilge water.
The DC55-12 belongs to the Fullriver DC Series range. [See all Fullriver batteries](https://bateriasonline.es/en/fullriver-batteries)

## Equivalents and alternatives to the Fullriver DC55-12

We have no other battery with exactly the dimensions and polarity of the DC55-12. Browse the rest of our [marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries) to compare close options.

## Fullriver DC55-12 vs FFD55-12 and FT620-51

What sets the DC55-12 apart from its neighbours in the Fullriver range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Fullriver DC55-12 (this one) | 55 Ah | 400 A | 229 × 138 × 212 | 17.6 kg |
| Fullriver FFD55-12 | 55 Ah | 350 A | 229 × 138 × 212 | 16.4 kg |
| Fullriver FT620-51 | 55 Ah | 620 A | 229 × 138 × 230 | 18 kg |

- Fullriver FFD55-12: the same capacity, 50 A less cranking power, the same dimensions.
- Fullriver FT620-51: the same capacity, 220 A more cranking power, a different case (229 × 138 × 230 mm).

## What it means that the DC55-12 is AGM

Inside, the DC55-12 has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Check this before ordering the Fullriver DC55-12

- Length, width and height of the DC55-12: 229 × 138 × 212 mm.
- With 55 Ah, the DC55-12 replaces an original battery of that capacity or slightly less.
- The DC55-12 delivers 400 A cold cranking (EN standard); do not go below what your original battery states.

## Part numbers and codes for the Fullriver DC55-12

Shops, garages and catalogues identify the DC55-12 with these codes:

| Commercial reference | DC55-12 |
|---|---|
| Terminal type | M6 |
| Not to be confused with | Fullriver DCG55-12 (55 Ah), Fullriver DC35-12 (35 Ah, 190 A), Fullriver DC50-12 (50 Ah, 440 A) |

## Frequently asked questions about the Fullriver DC55-12

### DC55-12 or FFD55-12: which one suits me?

Compared with the DC55-12, the Fullriver FFD55-12 has 50 A less cranking power. The DC55-12 cranks harder; the FFD55-12 is only a good option if your original battery says 350 A or less. Both measure 229 × 138 × 212 mm, so they fit the same tray.

### How much does the Fullriver DC55-12 weigh?

17.6 kg, with 55 Ah of capacity. For reference, the Fullriver FFD55-12 (55 Ah) weighs 16.4 kg.

### Which charger does the Fullriver DC55-12 need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

## Other options if you are unsure about the DC55-12

- [All marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [Full Fullriver catalogue](https://bateriasonline.es/en/fullriver-batteries)

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