# Tudor TK131 · Auxiliary battery 12V 13Ah 200A

![Tudor TK131 · Auxiliary battery 12V 13Ah 200A](https://bateriasonline.es/2470-home_default/tudor-tk131.jpg)

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

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

- **Canonical URL**: https://bateriasonline.es/en/tudor-tk131
- **Language**: en
- **Brand**: Tudor
- **Reference**: BOL-TUDOR-TK131
- **EAN**: 3661024056601
- **MPN**: TK131
- **Price**: 62,33 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Tudor |
| Range | TUDOR 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

Tudor TK131: 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

## The Tudor TK131 at a glance

The Tudor TK131 is the second battery fitted in many modern cars. Without it, Start-Stop or back-up warnings appear on the dashboard.
The TK131 belongs to the Tudor TUDOR Start-Stop Auxiliary range. [See all Tudor batteries](https://bateriasonline.es/en/tudor-batteries)

## Equivalents and alternatives to the Tudor TK131

As the TK131 is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EK131 | 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 |
| Exide EK151 | AGM | 15 Ah | 200 A | 150 × 90 × 145 |

## Tudor TK131 vs TK151 and TK111: differences

The real differences between the TK131 and the closest Tudor models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Tudor TK131 (this one) | 13 Ah | 200 A | 150 × 90 × 145 | left | 4.5 kg |
| Tudor TK151 | 15 Ah | 200 A | 150 × 90 × 145 | left | 4.8 kg |
| Tudor TK111 | 11 Ah | 150 A | 150 × 90 × 130 | left | 3.9 kg |

- Tudor TK151: 2 Ah more, the same cranking power, the same dimensions.
- Tudor TK111: 2 Ah less, 50 A less cranking power, a different case (150 × 90 × 130 mm).

## Inside the TK131: AGM technology

Inside, the TK131 has glass fibre separators (AGM) that hold the electrolyte. The TK131 needs a charger with an AGM mode that does not exceed 14.7 V.

## Before ordering the TK131, check this

- Measure the space: the TK131 takes up 150 × 90 × 145 mm.
- The TK131 has the positive terminal on the left: compare it with your current battery.
- Capacity of the TK131: 13 Ah; the same as your current battery or slightly more is fine.
- Check the EN amps on your battery: if it says 200 A or less, the TK131 covers your engine.

## Tudor TK131 codes and part numbers

This is how the Tudor TK131 appears on the label and in parts catalogues:

| Commercial reference | TK131 |
|---|---|
| EAN | 3661024056601 |
| Terminal type | M04 |
| Not to be confused with | Tudor TK111 (11 Ah, 150 A), Tudor TK151 (15 Ah, 200 A) |

## Frequently asked questions about the Tudor TK131

### Tudor TK131 or TK151?

Compared with the TK131, the Tudor TK151 has 2 Ah more. With the same cranking power (200 A), the TK131 and the TK151 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 Tudor TK131 weigh?

The TK131 weighs 4.5 kg. For reference, the Tudor TK151 (15 Ah) weighs 4.8 kg.

### Which battery is equivalent to the Tudor TK131?

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

### Which side is the positive terminal on the Tudor TK131?

The TK131 has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

## More batteries to compare with the TK131

- [More auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries)
- [The whole Tudor range](https://bateriasonline.es/en/tudor-batteries)
- [Exide EK131](https://bateriasonline.es/en/exide-ek131) · 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*