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

![Fullriver DCG120-12A · Motorhome battery 12V 120Ah](https://bateriasonline.es/1934-home_default/fullriver-dcg120-12a.jpg)

> Fullriver DCG120-12A: 120 Ah motorhome battery, 341×172×283 mm, AGM. Equivalent to Fulbat FDC12-145 AGM.

**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-dcg120-12a
- **Language**: en
- **Brand**: Fullriver
- **Reference**: BOL-FULLRIVER-DCG120-12A
- **MPN**: DCG120-12A
- **Price**: 504,60 € (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 | 341 mm |
| Width | 172 mm |
| Height | 283 mm |
| Weight | 38.6 kg |
| Terminal type | AP |

## Quick description

Fullriver DCG120-12A: motorhome battery with 12 V and 120 Ah, measuring 341 × 172 × 283 mm.

## Description

## The Fullriver DCG120-12A at a glance

The Fullriver DCG120-12A is a leisure battery for motorhomes and caravans: it powers fridge, lights, water pump and heating for days without starting the engine. Unlike the starter battery, it takes slow, deep discharges night after night.
The DCG120-12A belongs to the Fullriver DCG Series range. [See all Fullriver batteries](https://bateriasonline.es/en/fullriver-batteries)

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

Other AGM batteries that fit the DCG120-12A's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Fulbat FDC12-145 AGM | AGM | 122 Ah | 340 × 172 × 286 |

## Fullriver DCG120-12A vs DCG100-12-30H and DCG135-12: differences

What sets the DCG120-12A apart from its neighbours in the Fullriver range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Fullriver DCG120-12A (this one) | 120 Ah | 341 × 172 × 283 | 38.6 kg |
| Fullriver DCG100-12-30H | 100 Ah | 329 × 171 × 247 | 31.7 kg |
| Fullriver DCG135-12 | 135 Ah | 482 × 170 × 229 | 42.5 kg |

- Fullriver DCG100-12-30H: 20 Ah less, a different case (329 × 171 × 247 mm).
- Fullriver DCG135-12: 15 Ah more, a different case (482 × 170 × 229 mm).

## AGM technology in the DCG120-12A

The DCG120-12A 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.

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

- The DCG120-12A needs 341 × 172 × 283 mm of space: measure it with the hold-down clamp in place.
- Your current battery should say about 120 Ah; a little more is also fine.

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

The DCG120-12A is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | DCG120-12A |
|---|---|
| Terminal type | AP |
| Not to be confused with | Fullriver DCG120-12B (120 Ah), Fullriver DC120-12A (120 Ah, 750 A) |

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

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

Compared with the DCG120-12A, the Fullriver DCG100-12-30H has 20 Ah less. With 120 Ah, the DCG120-12A 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 DCG120-12A weigh?

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

### Which battery is equivalent to the Fullriver DCG120-12A?

Only other AGM batteries with its dimensions and polarity: Fulbat FDC12-145 AGM. Neither an EFB nor a conventional battery replaces the DCG120-12A.

### Which charger does the Fullriver DCG120-12A 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 DCG120-12A

- [More leisure batteries for motorhomes and caravans](https://bateriasonline.es/en/leisure-batteries-motorhome-caravan)
- [More Fullriver models](https://bateriasonline.es/en/fullriver-batteries)
- [Fullriver DCG140-8](https://bateriasonline.es/en/fullriver-dcg140-8) · 140 Ah, 260×182×272 mm
- [Trojan 5SHP-AES](https://bateriasonline.es/en/trojan-5shp-aes) · 130 Ah, 341×170×263 mm

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