# Fullriver DCG120-12B · Motorhome battery 12V 120Ah

![Fullriver DCG120-12B · Motorhome battery 12V 120Ah](https://bateriasonline.es/1943-home_default/fullriver-dcg120-12b.jpg)

> Fullriver DCG120-12B: 120 Ah motorhome battery, 327×182×289 mm, AGM. Compare sizes and equivalents; 14-day returns.

**Category:** [Leisure batteries for motorhomes and caravans](https://bateriasonline.es/en/leisure-batteries-motorhome-caravan) → [Fullriver](https://bateriasonline.es/en/fullriver-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fullriver-dcg120-12b
- **Language**: en
- **Brand**: Fullriver
- **Reference**: BOL-FULLRIVER-DCG120-12B
- **MPN**: DCG120-12B
- **Price**: 532,34 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fullriver |
| Range | DCG Series |
| Application | Motorhomes and caravans |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 120 Ah |
| Length | 327 mm |
| Width | 182 mm |
| Height | 289 mm |
| Weight | 39.5 kg |
| Terminal type | AP |

## Quick description

The Fullriver DCG120-12B is a motorhome battery with 12 V and 120 Ah, measuring 327 × 182 × 289 mm.

## Description

## The Fullriver DCG120-12B at a glance

The Fullriver DCG120-12B is made for the living area of a motorhome. With 120 Ah, the DCG120-12B runs the leisure loads for several nights depending on use.
The DCG120-12B belongs to the Fullriver DCG Series range. [The full range of Fullriver batteries](https://bateriasonline.es/en/fullriver-batteries)

## Equivalents and alternatives to the Fullriver DCG120-12B

We have no other battery with exactly the dimensions and polarity of the DCG120-12B. Browse the rest of our [leisure batteries for motorhomes and caravans](https://bateriasonline.es/en/leisure-batteries-motorhome-caravan) to compare close options.

## Fullriver DCG120-12B vs DCG100-12-30H and DCG110-12: which one to choose?

How the DCG120-12B compares with Fullriver batteries of similar size and capacity:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Fullriver DCG120-12B (this one) | 120 Ah | 327 × 182 × 289 | 39.5 kg |
| Fullriver DCG100-12-30H | 100 Ah | 329 × 171 × 247 | 31.7 kg |
| Fullriver DCG110-12 | 110 Ah | 286 × 269 × 230 | 37.6 kg |

- Fullriver DCG100-12-30H: 20 Ah less, a different case (329 × 171 × 247 mm).
- Fullriver DCG110-12: 10 Ah less, a different case (286 × 269 × 230 mm).

## AGM technology in the DCG120-12B

Inside, the DCG120-12B has glass fibre separators (AGM) that hold the electrolyte. The DCG120-12B needs a charger with an AGM mode that does not exceed 14.7 V.

## Check this before ordering the Fullriver DCG120-12B

- The DCG120-12B needs 327 × 182 × 289 mm of space: measure it with the hold-down clamp in place.
- With 120 Ah, the DCG120-12B replaces an original battery of that capacity or slightly less.

## Part numbers and codes for the Fullriver DCG120-12B

This is how the Fullriver DCG120-12B appears on the label and in parts catalogues:

| Commercial reference | DCG120-12B |
|---|---|
| Terminal type | AP |
| Not to be confused with | Fullriver DCG120-12A (120 Ah), Fullriver DC120-12B (120 Ah, 760 A) |

## Frequently asked questions about the Fullriver DCG120-12B

### DCG120-12B or DCG100-12-30H: which one suits me?

Compared with the DCG120-12B, the Fullriver DCG100-12-30H has 20 Ah less. With 120 Ah, the DCG120-12B runs longer between charges than the DCG100-12-30H (100 Ah). Mind the space: the DCG100-12-30H measures 329 × 171 × 247 mm.

### How much does the Fullriver DCG120-12B weigh?

39.5 kg, with 120 Ah of capacity. For reference, the Fullriver DCG100-12-30H (100 Ah) weighs 31.7 kg.

### How many days of autonomy does the Fullriver DCG120-12B give in a motorhome?

It depends on consumption. With 120 Ah and LED lights, pump and a gas fridge, 2 or 3 days without recharging is normal; with an electric fridge, much less.

## Other options if you are unsure about the DCG120-12B

- [All leisure batteries for motorhomes and caravans](https://bateriasonline.es/en/leisure-batteries-motorhome-caravan)
- [More Fullriver models](https://bateriasonline.es/en/fullriver-batteries)

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