# Exide EC904 · Car battery 12V 90Ah 680A

![Exide EC904 · Car battery 12V 90Ah 680A](https://bateriasonline.es/82-home_default/exide-ec904.jpg)

> Exide EC904: 90 Ah car battery, 680 A (EN), 306×173×222 mm, positive terminal on the right, D31 case. Equivalent to Tudor TC904.

**Category:** [Car batteries](https://bateriasonline.es/en/car-batteries) → [Exide](https://bateriasonline.es/en/exide-batteries)

- **Canonical URL**: https://bateriasonline.es/en/exide-ec904
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-EC904
- **EAN**: 3661024034753
- **MPN**: EC904
- **Price**: 101,35 € (VAT incl., Spain)
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE CLASSIC |
| Application | Cars |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 90 Ah |
| Cold cranking amps (EN) | 680 A |
| Length | 306 mm |
| Width | 173 mm |
| Height | 222 mm |
| Weight | 19.9 kg |
| Polarity | Positive terminal on the right |
| Case size | D31 (306 × 173 × 225 mm) |

## Quick description

Exide EC904: car battery with 12 V, 90 Ah and 680 A cold cranking current, case size D31 (306 × 173 × 222 mm), with the positive terminal on the right. If yours has the positive terminal on the left, you need the Exide EC905.

## Description

## The Exide EC904 at a glance

The Exide EC904 is made for petrol and diesel cars without automatic engine stop. The EC904 covers the daily routine of a car without automatic engine stop: cold starts, short trips and loads with the ignition off.
At 90 Ah it moves into large diesels, SUVs, vans and cars with heavy electrical equipment. The EC904 belongs to the Exide EXIDE CLASSIC range. [The full range of Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Exide EC904 codes and part numbers

This is how the Exide EC904 appears on the label and in parts catalogues:

| Commercial reference | EC904 |
|---|---|
| EAN | 3661024034753 |
| Case size (EN) | D31 |
| Not to be confused with | Exide EC900 (90 Ah, 720 A), Exide EC905 (90 Ah, 680 A, positive terminal on the left) |

## Exide EC904 vs EB954, EC905 and EA954: differences

What sets the EC904 apart from its neighbours in the Exide range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide EC904 (this one) | 90 Ah | 680 A | 306 × 173 × 222 | right | 19.9 kg |
| Exide EB954 | 95 Ah | 760 A | 306 × 173 × 222 | right | 20.6 kg |
| Exide EC905 | 90 Ah | 680 A | 306 × 173 × 222 | left | 19.9 kg |
| Exide EA954 | 95 Ah | 800 A | 306 × 173 × 222 | right | 21.4 kg |

- Exide EB954: 5 Ah more, 80 A more cranking power, the same D31 case.
- Exide EC905: identical to the EC904 except for the positive terminal, which is on the other side (positive terminal on the left).
- Exide EA954: 5 Ah more, 120 A more cranking power, the same D31 case.

## Equivalents and alternatives to the Exide EC904

Same dimensions and polarity as the EC904, with similar capacity and cranking power; as a conventional battery, the EC904 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) |
|---|---|---|---|---|
| Tudor TC904 | Lead-acid | 90 Ah | 680 A | 306 × 173 × 222 |
| Fulmen FC904 | Lead-acid | 90 Ah | 680 A | 306 × 173 × 222 |
| Deta DC904 | Lead-acid | 90 Ah | 680 A | 306 × 173 × 222 |
| Tudor TB954 | Lead-acid | 95 Ah | 760 A | 306 × 173 × 222 |
| Fulmen FB954 | Lead-acid | 95 Ah | 760 A | 306 × 173 × 222 |
| Deta DB954 | Lead-acid | 95 Ah | 760 A | 306 × 173 × 222 |

## Lead-acid technology in the EC904

Inside, the EC904 is classic lead-acid: liquid electrolyte and lead plates. If the EC904 is left discharged for weeks it sulphates: a maintenance charger prevents this.

## Before ordering the EC904, check this

- If your car has Start-Stop, the EC904 is not the right one: it needs an EFB or an AGM.
- Check the EN amps on your battery: if it says 680 A or less, the EC904 covers your engine.
- With 90 Ah, the EC904 replaces an original battery of that capacity or slightly less.
- The EC904 has the positive terminal on the right: compare it with your current battery.
- Measure the space: the EC904 takes up 306 × 173 × 222 mm (European case size D31).

## Frequently asked questions about the Exide EC904

### Exide EC904 or EB954?

Compared with the EC904, the Exide EB954 has 5 Ah more and 80 A more cranking power. If your current battery says 760 A or more, choose the EB954; if it says 680 A or less, the EC904 is enough. Both measure 306 × 173 × 222 mm, so they fit the same tray.

### What is the difference between the Exide EC904 and the EC905?

They are the same battery with the terminals swapped: positive terminal on the right on the EC904, positive terminal on the left on the EC905. Look at your current battery with the terminals facing you and pick the one that matches.

### Can the Exide EC904 be used in a car with Start-Stop?

No. The EC904 is a lead-acid battery for cars without automatic engine stop; Start-Stop needs an EFB or an AGM.

### How much does the Exide EC904 weigh?

The EC904 weighs 19.9 kg. For reference, the Exide EB954 (95 Ah) weighs 20.6 kg.

### Which battery is equivalent to the Exide EC904?

With the same dimensions, polarity and similar capacity you have the Tudor TC904, Fulmen FC904 and Deta DC904. As the EC904 is a conventional battery, an EFB or AGM of the same size also works.

### What case size is the Exide EC904?

Case size D31: 306 × 173 × 222 mm. The EC904 fits any standard D31 battery tray such as the Tudor TC904.

### Does the new battery need to be registered in the car?

In cars with energy management (common since 2010) it is worth registering the battery in the control unit so it adjusts charging. In older cars you just connect it.

## More batteries to compare with the EC904

- [Other car batteries](https://bateriasonline.es/en/car-batteries)
- [More Exide models](https://bateriasonline.es/en/exide-batteries)
- [Varta G7](https://bateriasonline.es/en/varta-g7) · 95 Ah, 830 A, 306×173×225 mm

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