# Marine battery Exide ER350 12V 80Ah 570A

![Marine battery Exide ER350 12V 80Ah 570A](https://baterias.com/5702-home_default/battery-exide-er350-12v-80ah-510a.jpg)

> Exide ER350 marine battery 12V 80Ah 570A. MARINA DUAL ER range. Dimensions 270×173×222 mm, + terminal on the left. Cranking and house duties.

**Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [EXIDE](https://baterias.com/gb/exide)

- **Canonical URL**: https://baterias.com/gb/battery-exide-er350-12v-80ah-510a
- **Language**: en-GB
- **Brand**: EXIDE
- **Reference**: BCOM-EXIDE-ER350
- **EAN**: 3661024036009
- **MPN**: ER350
- **Price**: 85,20 €
- **Stock**: In stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | EXIDE |
| Reference | ER350 |
| Model | EXIDE MARINA DUAL ER |
| Voltage (V) | 12 V |
| Largo | 270 cm |
| Ancho | 173 cm |
| Alto | 222 cm |
| Peso | 17.8 kg |
| Tecnología | Lead-acid |
| EAN | 3661024036009 |
| Terminal layout | Positive terminal on the left |
| Terminal type | 1 |
| Hold down | Korean B1+B6 |
| Cold cranking amps (EN) | 570 A |
| Capacity (C20) | 80 Ah (c20) |
| Case type | D26 |

## Quick description

**Exide ER350 12V 80Ah 570A** is a marine battery, vibration- and deep-discharge resistant, suitable both for outboard engine starting and for onboard auxiliary services (navigation lights, GPS, sonar, fridge). Sealed and maintenance-free.

### Why this marine battery?

- **Marine design** built for boat swell and vibration
- **Dual function** starts the engine and powers onboard services
- **Sealed and safe** maintenance-free even when the boat rolls

🔌 Voltage
12 V

⚡ Capacity
80 Ah C20

🔋 Cold cranking
570 A EN-1

📏 Dimensions
270×173×222 mm

⚙️ Technology
Lead-acid

🧭 Polarity
Positive on the left

⚖️ Weight
17,8 kg

🏷️ Model
EXIDE MARINA DUAL ER

## Description

## Marine battery Exide ER350 Marina Dual Er 80Ah 570A 12V

12*V* Voltage
80*Ah* Capacity
570*A* Cold cranking
17.80*kg* Weight

The **Exide ER350 marine battery** offers **12 V**, **80 Ah** and **570 A** of cold cranking current (EN) from the **Marina Dual Er** range with conventional lead-acid technology, designed for motor and sailing boats, both for engine starting and onboard services. Measuring 270 × 173 × 222 mm and the positive terminal on the left, it is the direct replacement for boats fitted from the factory with a 80 Ah battery of this format.
- Good balance of capacity, cranking power and price.
- Ready for starting outboard and inboard engines.
- Sealed: no spills or gases in the locker.
- Resistant to humidity and salt air.

### Dimensions, polarity and mounting

It has external dimensions of 270 × 173 × 222 mm and weighs 17.80 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a Korean B1+B6 hold-down and 1 terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.

### What the Exide ER350 is for

The Exide ER350 is designed for motor and sailing boats, both for engine starting and onboard services. If it is your starter battery, run the services from a separate battery; if it is a service battery, avoid routinely discharging it beyond 50%. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 17.80 kg, 1 terminals and Korean B1+B6 hold-down.

### The Exide ER350: Marina Dual Er range and conventional lead-acid technology

Within the Exide catalogue, the **Marina Dual Er** series groups the references designed for this use. The ER350 is the 80 Ah model of that family, with the same performance as its siblings in other sizes.
The conventional lead-acid battery remains the most widespread technology thanks to its balance of capacity, cranking current and price. Well maintained and kept charged, it offers years of reliable service in vehicles without Start-Stop.

### What Exide does differently

With more than a century of history, Exide Technologies manufactures automotive, marine, motorcycle and industrial batteries in Europe. Its presence as original equipment on assembly lines vouches for the quality of every reference. All the Exide batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

### Official warranty

The Exide ER350 comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.

### How to make it last longer

At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up. Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections.

### Shipping, delivery and returns

Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.

## Frequently asked questions

### How do I change this battery step by step?

In most boats it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On boats with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### How long does the Exide ER350 battery last?

Expected lifespan of the Exide ER350 is 4 to 6 years in regular boat use without Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.

### What are the dimensions of the Exide ER350 battery?

Dimensions (length × width × height) are 270×173×222 mm — also written as 270x173x222 mm — following the European DIN standard. Always measure the space in your boat before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.

### Is the ER350 valid for my vehicle?

Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The ER350 typically fits a wide range of European vehicles thanks to its standard DIN case format.

### Which batteries are equivalent to the Exide ER350?

Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop boats. See the "Equivalents" section to view recommended options at the same performance level.


## Reviews

- **Average rating**: 4.79 / 5 (37 reviews)

## 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*