# Marine battery Exide ER450 12V 95Ah 720A

![Marine battery Exide ER450 12V 95Ah 720A](https://baterias.com/5704-home_default/battery-exide-er450-12v-95ah-650a.jpg)

> Exide ER450 marine battery 12V 95Ah 720A. MARINA DUAL ER range. Dimensions 306×173×222 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-er450-12v-95ah-650a
- **Language**: en-GB
- **Brand**: EXIDE
- **Reference**: BCOM-EXIDE-ER450
- **EAN**: 3661024035996
- **MPN**: ER450
- **Price**: 89,50 €
- **Stock**: In stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | EXIDE |
| Reference | ER450 |
| Model | EXIDE MARINA DUAL ER |
| Voltage (V) | 12 V |
| Largo | 306 cm |
| Ancho | 173 cm |
| Alto | 222 cm |
| Peso | 21.7 kg |
| Tecnología | Lead-acid |
| EAN | 3661024035996 |
| Terminal layout | Positive terminal on the left |
| Terminal type | 1 |
| Hold down | Korean B1 |
| Cold cranking amps (EN) | 720 A |
| Capacity (C20) | 95 Ah (c20) |
| Case type | D31 |

## Quick description

**Exide ER450 12V 95Ah 720A** 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
95 Ah C20

🔋 Cold cranking
720 A EN-1

📏 Dimensions
306×173×222 mm

⚙️ Technology
Lead-acid

🧭 Polarity
Positive on the left

⚖️ Weight
21,7 kg

🏷️ Model
EXIDE MARINA DUAL ER

## Description

## Marine battery Exide ER450 Marina Dual Er 95Ah 720A 12V

12*V* Voltage
95*Ah* Capacity
720*A* Cold cranking
21.70*kg* Weight

The **Exide ER450 marine battery** offers **12 V**, **95 Ah** and **720 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. Its 306 × 173 × 222 mm and the positive terminal on the left make it the exact replacement for the 95 Ah battery fitted as standard to many boats.
- Ready for starting outboard and inboard engines.
- Good balance of capacity, cranking power and price.
- Resistant to humidity and salt air.
- Sealed: no spills or gases in the locker.

### What the Exide ER450 is for

The Exide ER450 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 21.70 kg, 1 terminals and Korean B1 hold-down.

### Will it fit your current battery tray?

It has external dimensions of 306 × 173 × 222 mm and weighs 21.70 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 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 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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

### The Exide ER450: Marina Dual Er range and conventional lead-acid technology

The ER450 is part of the Exide **Marina Dual Er** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.

### How to make it last longer

As a service battery, avoid routine discharges below 50% to extend its cycle life. At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up.

### Manufacturer's warranty

The Exide ER450 comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.

### When you get it and how to return it

Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

## Frequently asked questions

### How do I fit the ER450 model in my boat?

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 our blog. 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 — with positive on the left 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 many years does this battery last?

Expected lifespan of the Exide ER450 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 ER450 battery?

Dimensions (length × width × height) are 306×173×222 mm — also written as 306x173x222 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.

### Which side is the positive terminal on this battery?

Polarity: positive on the left. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.

### Will the Exide ER450 battery fit my boat?

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 ER450 typically fits a wide range of European vehicles thanks to its standard DIN case format.

### Which batteries are equivalent to the Exide ER450?

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.


## 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 · 2026-10-22*