# Fullriver DCG100-12 · Boat battery 12V 100Ah

![Fullriver DCG100-12 · Boat battery 12V 100Ah](https://bateriasonline.es/1928-home_default/fullriver-dcg100-12.jpg)

> Fullriver DCG100-12: 100 Ah boat battery, 329×171×227 mm, AGM. Compare sizes and equivalents; 14-day returns.

**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-dcg100-12
- **Language**: en
- **Brand**: Fullriver
- **Reference**: BOL-FULLRIVER-DCG100-12
- **MPN**: DCG100-12
- **Price**: 397,78 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fullriver |
| Range | DCG Series |
| Application | Boats |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 100 Ah |
| Length | 329 mm |
| Width | 171 mm |
| Height | 227 mm |
| Weight | 31.7 kg |
| Terminal type | AP |

## Quick description

The Fullriver DCG100-12 is a boat battery with 12 V and 100 Ah, measuring 329 × 171 × 227 mm.

## Description

## Who the Fullriver DCG100-12 is for

The Fullriver DCG100-12 is a battery for boats: engine starting or on-board service, depending on its design, with resistance to damp and hull vibration. Fit the DCG100-12 securely on board and away from bilge water.
The DCG100-12 belongs to the Fullriver DCG Series range. [See all Fullriver batteries](https://bateriasonline.es/en/fullriver-batteries)

## Equivalents and alternatives to the Fullriver DCG100-12

No other reference in the catalogue fully matches the dimensions and polarity of the DCG100-12; you will find the closest ones among our [marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries).

## Fullriver DCG100-12 vs FT1100-31ST and FT1100-31: differences

Torn between the DCG100-12 and another similar Fullriver? This is what changes:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Fullriver DCG100-12 (this one) | 100 Ah | 329 × 171 × 227 | 31.7 kg |
| Fullriver FT1100-31ST | 110 Ah | 330 × 173 × 232 | 34.1 kg |
| Fullriver FT1100-31 | 110 Ah | 330 × 173 × 237 | 34.1 kg |

- Fullriver FT1100-31ST: 10 Ah more, a different case (330 × 173 × 232 mm).
- Fullriver FT1100-31: 10 Ah more, a different case (330 × 173 × 237 mm).

## Inside the DCG100-12: AGM technology

The DCG100-12 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. It withstands many more cycles than a conventional lead battery, at the cost of being more sensitive to overcharging.

## What to look at before buying the DCG100-12

- Measure the space: the DCG100-12 takes up 329 × 171 × 227 mm.
- With 100 Ah, the DCG100-12 replaces an original battery of that capacity or slightly less.

## Fullriver DCG100-12 codes and part numbers

The DCG100-12 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | DCG100-12 |
|---|---|
| Terminal type | AP |
| Not to be confused with | Fullriver DCG110-12 (110 Ah), Fullriver DCG160-12 (160 Ah), Fullriver DCG170-12 (170 Ah) |

## Frequently asked questions about the Fullriver DCG100-12

### Fullriver DCG100-12 or FT1100-31ST?

Compared with the DCG100-12, the Fullriver FT1100-31ST has 10 Ah more. With 110 Ah, the FT1100-31ST runs longer between charges than the DCG100-12 (100 Ah). Mind the space: the FT1100-31ST measures 330 × 173 × 232 mm.

### How much does the Fullriver DCG100-12 weigh?

The DCG100-12 weighs 31.7 kg. For reference, the Fullriver FT1100-31ST (110 Ah) weighs 34.1 kg.

### Can the Fullriver DCG100-12 be used for starting and service at the same time?

Only if it is dual purpose. A starter battery is not built for deep discharge, and a service battery does not deliver the current peak the engine asks for.

## Keep comparing: alternatives to the DCG100-12

- [Other marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [More Fullriver models](https://bateriasonline.es/en/fullriver-batteries)
- [Fullriver DC115-12B](https://bateriasonline.es/en/fullriver-dc115-12b) · 115 Ah, 605 A, 331×171×218 mm

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