# BOAT

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

**Category:** [Start](https://baterias.com/gb/beginning)

- **Canonical URL**: https://baterias.com/gb/barco
- **Language**: en-GB

## Description

On this page you find our selection of **BARCO** 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](/gb/battery-finder-by-plate) or filter by specs in the [comparator](/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 <6 m 50-80 Ah SLI / marine AGM
Starter, vessels 6-12 m 80-130 Ah Marine AGM (vibration-proof)
Cabin service (radio, GPS, lights) 100-200 Ah Deep cycle AGM
Large bank with fridge/windlass 200-400 Ah GEL / LiFePO4
Sailing yacht, 3+ day autonomy 400-800 Ah LiFePO4

### Leading marine battery brands

- [Fullriver DC](/gb/batteries-fullriver) — deep-cycle AGM, world reference in recreational marine.
- [MK Battery](/gb/batteries-mk) — sealed AGM and gel, 90° tilt and heavy vibration tolerant.
- [Trojan marine AGM](/gb/batteries-trojan) — premium AGM for large vessels and long-autonomy yachts.
- [Varta Professional Dual Purpose](/gb/batteries-varta) — official dual range for starter + service on small boats.

### Frequently asked questions

### **How fast does it ship?**

24-48 working hours in mainland Spain and Portugal for orders placed before [[ks:cutoff]]. Balearics, Canary Islands, Madeira, Azores and the rest of the EU: 3-5 working days.

### **Returns if it doesn't fit?**

Free returns within 14 days for mainland Spain and Portugal if the battery is sealed.

### **How do I confirm compatibility?**

Enter the number plate in the finder or use the comparator filtering by capacity, cranking and dimensions.

Catalogue curated by our technical team. **11,796 Trustpilot reviews · 4.5/5**. 24-48 h delivery in mainland Spain and Portugal (orders before [[ks:cutoff]]); [[ks:return_days]]-day returns with free collection on the Iberian mainland.

## Products in this category

| Product | Brand | Price |
|---|---|---|
| [Marine battery Exide EV1920S 12V 150Ah Li-Ion](https://baterias.com/gb/battery-exide-ev1920s-12v-150ah) | EXIDE | 796,20 € |
| [Marine battery Tudor TZ650 12V 75Ah 750A EFB](https://baterias.com/gb/battery-tudor-tz650-12v-75ah) | TUDOR | 107,90 € |
| [Marine battery Tudor TZ850 12V 100Ah 900A EFB](https://baterias.com/gb/battery-tudor-tz850-12v-100ah) | TUDOR | 146,20 € |

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries.

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

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*baterias.com — Automotive batteries · 2026-09-28*