# FULBAT FDM Marine AGM Carbon

> Marine batteries AGM, GEL and lithium for starter, service and dual purpose use. Fullriver DC, MK, Trojan, Varta marine. Vibration-proof, spill-proof

**Category:** [Battery brands](https://baterias.com/gb/battery-brands) → [Starter Batteries](https://baterias.com/gb/starter-batteries) → [Boat Batteries](https://baterias.com/gb/boat-batteries) → [Marine Dual Purpose Batteries](https://baterias.com/gb/marine-dual-purpose-batteries)

- **Canonical URL**: https://baterias.com/gb/fulbat-fdm-marine-agm-carbon
- **Language**: en-GB

## Description

On this page you find our selection of **FULBAT FDM Marine AGM Carbon** for marine use: starter, service (cabin auxiliary) and dual purpose batteries in flooded lead-acid, AGM, GEL and lithium. Marine batteries operate in conditions a car never sees: humidity, constant vibration, deep cycles at anchor and long discharges powering auxiliary loads (radio, GPS, fridge, windlass).
The fastest way: enter your [number plate](https://baterias.com/gb/battery-finder-by-plate) or filter by specs in the [comparator](https://baterias.com/gb/comparator).

## How to choose the right marine battery

Marine batteries fall into three clearly different families: **starter** (short high-current burst to crank the engine), **service / deep cycle** (slow discharge over hours powering on-board electronics) and **dual purpose** (acceptable compromise for small boats with a single bank). NEVER use a starter battery for service duty: it sulphates within weeks. AGM is preferable to flooded lead-acid in any vessel — maintenance-free, no off-gassing, spill-proof and vibration-resistant. LiFePO4 lithium delivers 4x the cycles of AGM and 100% usable capacity (vs 50% for lead-acid in deep cycle) at roughly triple the upfront cost.

### Typical capacities by marine use

| Use | Typical capacity | Recommended technology |
|---|---|---|
| Starter, vessels

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-10-31*