# Exide ER660 · Boat battery 12V 140Ah 750A

![Exide ER660 · Boat battery 12V 140Ah 750A](https://bateriasonline.es/3952-home_default/exide-er660.jpg)

> Exide ER660: 140 Ah boat battery, 750 A (EN), 513×189×223 mm. Equivalent to Exide EN900 and Exide ET950.

**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-er660
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-ER660
- **EAN**: 3661024036429
- **MPN**: ER660
- **Price**: 232,84 € (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 | 140 Ah |
| Cold cranking amps (EN) | 750 A |
| Length | 513 mm |
| Width | 189 mm |
| Height | 223 mm |
| Weight | 37.3 kg |
| Terminal layout | 3 |

## Quick description

Exide ER660: boat battery with 12 V, 140 Ah and 750 A cold cranking current, measuring 513 × 189 × 223 mm.

## Description

## Who the Exide ER660 is for

The Exide ER660 is made for marine use. Fit the ER660 securely on board and away from bilge water.
The ER660 belongs to the Exide EXIDE MARINA DUAL ER range. [The full range of Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Inside the ER660: lead-acid technology

Inside, the ER660 is classic lead-acid: liquid electrolyte and lead plates. It is a robust, well-known technology with a good capacity-to-price ratio, and still the basis of most cars, trucks and traction equipment.

## Exide ER660 vs EN900 and ET950

What sets the ER660 apart from its neighbours in the Exide range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Exide ER660 (this one) | 140 Ah | 750 A | 513 × 189 × 223 | 37.3 kg |
| Exide EN900 | 140 Ah | 800 A | 513 × 189 × 223 | 34.1 kg |
| Exide ET950 | 135 Ah | 700 A | 513 × 189 × 223 | 39.5 kg |

- Exide EN900: the same capacity, 50 A more cranking power, the same dimensions.
- Exide ET950: 5 Ah less, 50 A less cranking power, the same dimensions.

## Equivalents and alternatives to the Exide ER660

Same dimensions and polarity as the ER660, with similar capacity and cranking power; as a conventional battery, the ER660 can also be replaced by an EFB or AGM of the same size if you want more cycles.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Varta LFD140 | Lead-acid | 140 Ah | 800 A | 513 × 189 × 223 |
| Varta LED140 | EFB | 140 Ah | 800 A | 513 × 189 × 223 |
| Exide EN900 | Lead-acid | 140 Ah | 800 A | 513 × 189 × 223 |
| Exide ET950 | Lead-acid | 135 Ah | 700 A | 513 × 189 × 223 |
| Exide EP1200 | AGM | 140 Ah | 700 A | 513 × 189 × 223 |

## Exide ER660 codes and part numbers

Shops, garages and catalogues identify the ER660 with these codes:

| Commercial reference | ER660 |
|---|---|
| EAN | 3661024036429 |
| Not to be confused with | Exide ER650 (142 Ah, 850 A, positive terminal on the left), Exide ER600 (120 Ah, 800 A, positive terminal on the left) |

## Check this before ordering the Exide ER660

- Check the EN amps on your battery: if it says 750 A or less, the ER660 covers your engine.
- Capacity of the ER660: 140 Ah; the same as your current battery or slightly more is fine.
- Length, width and height of the ER660: 513 × 189 × 223 mm.

## Frequently asked questions about the Exide ER660

### Exide ER660 or EN900?

Compared with the ER660, the Exide EN900 has 50 A more cranking power. If your current battery says 800 A or more, choose the EN900; if it says 750 A or less, the ER660 is enough. Both measure 513 × 189 × 223 mm, so they fit the same tray.

### How much does the Exide ER660 weigh?

The ER660 weighs 37.3 kg. For reference, the Exide EN900 (140 Ah) weighs 34.1 kg.

### Which battery is equivalent to the Exide ER660?

With the same dimensions, polarity and similar capacity you have the Varta LFD140, Varta LED140 and Exide EN900. As the ER660 is a conventional battery, an EFB or AGM of the same size also works.

### How do I look after the boat battery in winter?

Leave it 100% charged, disconnected or on a marine maintenance charger. A battery that spends the winter half-discharged loses capacity permanently.

## Other options if you are unsure about the ER660

- [All marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [More Exide models](https://bateriasonline.es/en/exide-batteries)
- [Exide EU140-6](https://bateriasonline.es/en/exide-eu140-6) · 140 Ah, 900 A, 257×175×236 mm

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