# Exide ER550 · Boat battery 12V 115Ah 760A

![Exide ER550 · Boat battery 12V 115Ah 760A](https://bateriasonline.es/288-home_default/exide-er550.jpg)

> Exide ER550: 115 Ah boat battery, 760 A (EN), 349×175×235 mm, positive terminal on the left. Equivalent to Exide ER570 and Exide EN850.

**Category:** [Marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries) → [Exide](https://bateriasonline.es/en/exide-batteries)

- **Canonical URL**: https://bateriasonline.es/en/exide-er550
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-ER550
- **EAN**: 3661024035989
- **MPN**: ER550
- **Price**: 120,51 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE MARINA DUAL ER |
| Application | Boats |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 115 Ah |
| Cold cranking amps (EN) | 760 A |
| Length | 349 mm |
| Width | 175 mm |
| Height | 235 mm |
| Weight | 27.8 kg |
| Polarity | Positive terminal on the left |
| Energy | 550 Wh |

## Quick description

Exide ER550: boat battery with 12 V, 115 Ah and 760 A cold cranking current, measuring 349 × 175 × 235 mm, with the positive terminal on the left.

## Description

## The Exide ER550 at a glance

The Exide ER550 is a battery for boats: engine starting or on-board service, depending on its design, with resistance to damp and hull vibration. Check whether your boat needs starting, service or a dual-purpose battery before choosing.
The ER550 belongs to the Exide EXIDE MARINA DUAL ER range. [The full range of Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Equivalents and alternatives to the Exide ER550

Batteries that fit the ER550's tray with the same polarity; besides other conventional batteries, an EFB or AGM of this size is a valid upgrade for the ER550.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Varta LFS120 | Lead-acid | 120 Ah | 780 A | 349 × 175 × 236 |
| Exide ER570 | Lead-acid | 120 Ah | 760 A | 349 × 175 × 235 |
| Exide EN850 | Lead-acid | 110 Ah | 750 A | 349 × 175 × 235 |

## Exide ER550 vs ER570, ER600 and EN850

What sets the ER550 apart from its neighbours in the Exide range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide ER550 (this one) | 115 Ah | 760 A | 349 × 175 × 235 | left | 27.8 kg |
| Exide ER570 | 120 Ah | 760 A | 349 × 175 × 235 | left | 27.3 kg |
| Exide ER600 | 120 Ah | 800 A | 349 × 175 × 285 | left | 31.4 kg |
| Exide EN850 | 110 Ah | 750 A | 349 × 175 × 235 | left | 25.4 kg |

- Exide ER570: 5 Ah more, the same cranking power, the same dimensions.
- Exide ER600: 5 Ah more, 40 A more cranking power, a different height (285 mm instead of 235 mm). It only fits if there is room for 285 mm of height.
- Exide EN850: 5 Ah less, 10 A less cranking power, the same dimensions.

## Lead-acid technology in the ER550

The ER550 is a conventional lead-acid battery, with plates immersed in liquid electrolyte. Avoid leaving them discharged, as they sulphate, and charge them with a charger that cuts off or switches to maintenance when finished.

## Check this before ordering the Exide ER550

- Length, width and height of the ER550: 349 × 175 × 235 mm.
- Polarity of the ER550: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- Capacity of the ER550: 115 Ah; the same as your current battery or slightly more is fine.
- The ER550 delivers 760 A cold cranking (EN standard); do not go below what your original battery states.

## Part numbers and codes for the Exide ER550

The ER550 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | ER550 |
|---|---|
| EAN | 3661024035989 |
| Not to be confused with | Exide EC550 (55 Ah, 460 A, positive terminal on the right), Exide EL550 (55 Ah, 540 A, positive terminal on the right), Exide ET550 (80 Ah, 600 A, positive terminal on the right) |

## Frequently asked questions about the Exide ER550

### ER550 or ER570: which one suits me?

Compared with the ER550, the Exide ER570 has 5 Ah more. With the same cranking power (760 A), the ER550 and the ER570 differ in capacity: the one with more Ah supports more load with the engine off. Both measure 349 × 175 × 235 mm, so they fit the same tray.

### Exide ER550 or ER600: what changes?

Mainly the height: the ER550 is 235 mm tall and the Exide ER600 285 mm, with the same length and width. In capacity and cranking power, the ER600 offers 120 Ah and 800 A against 115 Ah and 760 A. Before choosing between the ER550 and the ER600, measure the free height of the battery compartment with the cover or bonnet closed.

### How much does the Exide ER550 weigh?

27.8 kg, with 115 Ah of capacity. For reference, the Exide ER570 (120 Ah) weighs 27.3 kg.

### Which battery is equivalent to the Exide ER550?

With the same dimensions, polarity and similar capacity you have the Varta LFS120, Exide ER570 and Exide EN850. As the ER550 is a conventional battery, an EFB or AGM of the same size also works.

### Which side is the positive terminal on the Exide ER550?

On the ER550, the positive terminal is on the left with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

### Which charger does the Exide ER550 need?

An automatic lead-acid charger with cut-off or maintenance mode, rated at 10 to 20% of its capacity in amps. If it is a vented type, check the electrolyte level and top up only with distilled water.

## Keep comparing: alternatives to the ER550

- [More marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [More Exide models](https://bateriasonline.es/en/exide-batteries)
- [Varta LFS120](https://bateriasonline.es/en/varta-lfs120) · 120 Ah, 780 A, 349×175×236 mm
- [Exide ER570](https://bateriasonline.es/en/exide-er570) · 120 Ah, 760 A, 349×175×235 mm

---
*bateriasonline.es — Batteries and accessories · 2026-11-10*