# Exide EK131 · Auxiliary battery 12V 13Ah 200A

![Exide EK131 · Auxiliary battery 12V 13Ah 200A](https://bateriasonline.es/255-home_default/exide-ek131.jpg)

> Exide EK131: 13 Ah auxiliary battery, 200 A (EN), 150×90×145 mm, positive terminal on the left, AGM. Equivalent to Tudor TK131.

**Category:** [Auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries) → [Exide](https://bateriasonline.es/en/exide-batteries)

- **Canonical URL**: https://bateriasonline.es/en/exide-ek131
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-EK131
- **EAN**: 3661024036641
- **MPN**: EK131
- **Price**: 60,76 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE Start-Stop Auxiliary |
| Application | Auxiliary and back-up use |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 13 Ah |
| Cold cranking amps (EN) | 200 A |
| Length | 150 mm |
| Width | 90 mm |
| Height | 145 mm |
| Weight | 4.5 kg |
| Polarity | Positive terminal on the left |
| Terminal type | M04 |

## Quick description

The Exide EK131 is an auxiliary battery (AGM) with 12 V, 13 Ah and 200 A cold cranking current, measuring 150 × 90 × 145 mm, with the positive terminal on the left.

## Description

## Who the Exide EK131 is for

The Exide EK131 is the second battery fitted in many modern cars. Without it, Start-Stop or back-up warnings appear on the dashboard.
The EK131 belongs to the Exide EXIDE Start-Stop Auxiliary range. [See all Exide batteries](https://bateriasonline.es/en/exide-batteries)

## AGM technology in the EK131

Inside, the EK131 has glass fibre separators (AGM) that hold the electrolyte. The EK131 needs a charger with an AGM mode that does not exceed 14.7 V.

## Exide EK131 vs EK151 and EK111: differences

Torn between the EK131 and another similar Exide? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide EK131 (this one) | 13 Ah | 200 A | 150 × 90 × 145 | left | 4.5 kg |
| Exide EK151 | 15 Ah | 200 A | 150 × 90 × 145 | left | 4.8 kg |
| Exide EK111 | 11 Ah | 150 A | 150 × 90 × 130 | left | 3.9 kg |

- Exide EK151: 2 Ah more, the same cranking power, the same dimensions.
- Exide EK111: 2 Ah less, 50 A less cranking power, a different case (150 × 90 × 130 mm).

## Equivalents and alternatives to the Exide EK131

Other AGM batteries that fit the EK131's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Tudor TK131 | AGM | 13 Ah | 200 A | 150 × 90 × 145 |
| Fulmen FK131 | AGM | 13 Ah | 200 A | 150 × 90 × 145 |
| Deta DK131 | AGM | 13 Ah | 200 A | 150 × 90 × 145 |
| Varta AUX14 | AGM | 13 Ah | 200 A | 150 × 87 × 146 |
| Kronobat AUX14 | AGM | 13 Ah | 200 A | 150 × 87 × 146 |
| Tudor TK151 | AGM | 15 Ah | 200 A | 150 × 90 × 145 |

## Part numbers and codes for the Exide EK131

This is how the Exide EK131 appears on the label and in parts catalogues:

| Commercial reference | EK131 |
|---|---|
| EAN | 3661024036641 |
| Terminal type | M04 |
| Not to be confused with | Exide EK111 (11 Ah, 150 A), Exide EK151 (15 Ah, 200 A) |

## What to look at before buying the EK131

- Check the EN amps on your battery: if it says 200 A or less, the EK131 covers your engine.
- Capacity of the EK131: 13 Ah; the same as your current battery or slightly more is fine.
- Polarity of the EK131: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- Measure the space: the EK131 takes up 150 × 90 × 145 mm.

## Frequently asked questions about the Exide EK131

### EK131 or EK151: which one suits me?

Compared with the EK131, the Exide EK151 has 2 Ah more. With the same cranking power (200 A), the EK131 and the EK151 differ in capacity: the one with more Ah supports more load with the engine off. Both measure 150 × 90 × 145 mm, so they fit the same tray.

### How much does the Exide EK131 weigh?

4.5 kg, with 13 Ah of capacity. For reference, the Exide EK151 (15 Ah) weighs 4.8 kg.

### Which battery is equivalent to the Exide EK131?

Only other AGM batteries with its dimensions and polarity: Tudor TK131, Fulmen FK131 and Deta DK131. Neither an EFB nor a conventional battery replaces the EK131.

### Which side is the positive terminal on the Exide EK131?

On the EK131, 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 EK131 need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

## Keep comparing: alternatives to the EK131

- [Other auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries)
- [Full Exide catalogue](https://bateriasonline.es/en/exide-batteries)
- [Tudor TK131](https://bateriasonline.es/en/tudor-tk131) · 13 Ah, 200 A, 150×90×145 mm
- [Fulmen FK131](https://bateriasonline.es/en/fulmen-fk131) · 13 Ah, 200 A, 150×90×145 mm

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