# Exide ER350 · Boat battery 12V 80Ah 570A

![Exide ER350 · Boat battery 12V 80Ah 570A](https://bateriasonline.es/282-home_default/exide-er350.jpg)

> Exide ER350: 80 Ah boat battery, 570 A (EN), 270×173×222 mm, positive terminal on the left. Compare sizes and equivalents; 14-day returns.

**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-er350
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-ER350
- **EAN**: 3661024036009
- **MPN**: ER350
- **Price**: 83,22 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE MARINA DUAL ER |
| Application | Boats |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 80 Ah |
| Cold cranking amps (EN) | 570 A |
| Length | 270 mm |
| Width | 173 mm |
| Height | 222 mm |
| Weight | 17.8 kg |
| Polarity | Positive terminal on the left |
| Energy | 350 Wh |

## Quick description

The Exide ER350 is a boat battery with 12 V, 80 Ah and 570 A cold cranking current, measuring 270 × 173 × 222 mm, with the positive terminal on the left.

## Description

## The Exide ER350 at a glance

The Exide ER350 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 ER350 belongs to the Exide EXIDE MARINA DUAL ER range. [More Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Equivalents and alternatives to the Exide ER350

We have no other battery with exactly the dimensions and polarity of the ER350. Browse the rest of our [marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries) to compare close options.

## Exide ER350 vs EZ650 and ER450: which one to choose?

How the ER350 compares with Exide batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide ER350 (this one) | 80 Ah | 570 A | 270 × 173 × 222 | left | 17.8 kg |
| Exide EZ650 | 75 Ah | 750 A | 260 × 173 × 222 | left | 19 kg |
| Exide ER450 | 95 Ah | 720 A | 306 × 173 × 222 | left | 21.7 kg |

- Exide EZ650: 5 Ah less, 180 A more cranking power, a different case (260 × 173 × 222 mm), EFB technology.
- Exide ER450: 15 Ah more, 150 A more cranking power, a different case (306 × 173 × 222 mm).

## Lead-acid technology in the ER350

The ER350 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.

## What to look at before buying the ER350

- Measure the space: the ER350 takes up 270 × 173 × 222 mm.
- The ER350 has the positive terminal on the left: compare it with your current battery.
- With 80 Ah, the ER350 replaces an original battery of that capacity or slightly less.
- Cold cranking: 570 A (EN), equal to or higher than the original.

## Part numbers and codes for the Exide ER350

The ER350 is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | ER350 |
|---|---|
| EAN | 3661024036009 |
| Not to be confused with | Exide ER450 (95 Ah, 720 A), Exide ER550 (115 Ah, 760 A), Exide ER650 (142 Ah, 850 A) |

## Frequently asked questions about the Exide ER350

### ER350 or EZ650: which one suits me?

Compared with the ER350, the Exide EZ650 has 5 Ah less, 180 A more cranking power and EFB technology. If your current battery says 750 A or more, choose the EZ650; if it says 570 A or less, the ER350 is enough. Mind the space: the EZ650 measures 260 × 173 × 222 mm.

### How much does the Exide ER350 weigh?

17.8 kg, with 80 Ah of capacity. For reference, the Exide EZ650 (75 Ah) weighs 19 kg.

### Which side is the positive terminal on the Exide ER350?

On the ER350, 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 ER350 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.

## Other options if you are unsure about the ER350

- [Other marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [Full Exide catalogue](https://bateriasonline.es/en/exide-batteries)

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