# Varta AUX14 · Auxiliary battery 12V 13Ah 200A

![Varta AUX14 · Auxiliary battery 12V 13Ah 200A](https://bateriasonline.es/1151-home_default/varta-aux14.jpg)

> Varta AUX14 (ETN 513106020): 13 Ah auxiliary battery, 200 A (EN), 150×87×146 mm, positive terminal on the left. Equivalent to Exide EK131.

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

- **Canonical URL**: https://bateriasonline.es/en/varta-aux14
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-AUX14
- **EAN**: 4016987167830
- **MPN**: AUX14
- **Price**: 68,60 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Varta |
| Range | VARTA Dynamic AUX |
| Application | Auxiliary and back-up use |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 13 Ah |
| Cold cranking amps (EN) | 200 A |
| Length | 150 mm |
| Width | 87 mm |
| Height | 146 mm |
| Weight | 4.6 kg |
| Polarity | Positive terminal on the left |
| ETN code | 513106020 |

## Quick description

Varta AUX14 (ETN 513 106 020, also written 513106020): auxiliary battery (AGM) with 12 V, 13 Ah and 200 A cold cranking current, measuring 150 × 87 × 146 mm, with the positive terminal on the left.

## Description

## Where the Varta AUX14 fits

The Varta AUX14 is an auxiliary vehicle battery: it powers back-up functions such as Start-Stop, electric steering or the emergency system while the main battery starts the engine. Without it, Start-Stop or back-up warnings appear on the dashboard.
Varta lists the AUX14 in its Dynamic AUX line. [The full range of Varta batteries](https://bateriasonline.es/en/varta-batteries)

## What it means that the AUX14 is AGM

The AUX14 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the AUX14 can be fitted in the boot or under a seat with no risk of spills.

## Varta AUX14 vs AUX9: differences

The real differences between the AUX14 and the closest Varta models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta AUX14 (this one) | 13 Ah | 200 A | 150 × 87 × 146 | left | 4.6 kg |
| Varta AUX9 | 9 Ah | 130 A | 151 × 87 × 106 | left | 2.87 kg |

- Varta AUX9: 4 Ah less, 70 A less cranking power, a different case (151 × 87 × 106 mm).

## Equivalents and alternatives to the Varta AUX14

Other AGM batteries that fit the AUX14's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Kronobat AUX14 | AGM | 13 Ah | 200 A | 150 × 87 × 146 |
| Exide EK131 | AGM | 13 Ah | 200 A | 150 × 90 × 145 |
| 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 |
| Fulbat AUX14 | AGM | 12.6 Ah | – | 150 × 87 × 145 |

## Part numbers and codes for the Varta AUX14

Look for any of these AUX14 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | AUX14 |
|---|---|
| ETN code | 513106020 (also 513 106 020) |
| EAN | 4016987167830 |
| Case size according to Varta | YTX14 |
| UK code | YTX14 |
| Base hold-down | B00 |
| Also known as | Varta 513106020 · Varta 513 106 020 · YTX14 |
| Not to be confused with | Varta AUX1 (35 Ah, 520 A, positive terminal on the right) |

## Before ordering the AUX14, check this

- Cold cranking: 200 A (EN), equal to or higher than the original.
- With 13 Ah, the AUX14 replaces an original battery of that capacity or slightly less.
- With the terminals facing you, the positive terminal of the AUX14 is on the left.
- Measure the space: the AUX14 takes up 150 × 87 × 146 mm.

## Frequently asked questions about the Varta AUX14

### AUX14 or AUX9: which one suits me?

Compared with the AUX14, the Varta AUX9 has 4 Ah less and 70 A less cranking power. The AUX14 cranks harder; the AUX9 is only a good option if your original battery says 130 A or less. Mind the space: the AUX9 measures 151 × 87 × 106 mm.

### What does the code 513 106 020 on the Varta AUX14 mean?

It is its ETN (European Type Number), also written 513106020. The first three digits (513) encode voltage and capacity: 12 V and 13 Ah (5xx = under 100 Ah, 6xx = 100 to 199 Ah, 7xx = 200 Ah or more). The middle group (106) identifies the specific model within that capacity, and the last three digits (020) multiplied by 10 give the cold cranking current: 200 A.

### How much does the Varta AUX14 weigh?

4.6 kg, with 13 Ah of capacity. For reference, the Varta AUX9 (9 Ah) weighs 2.87 kg.

### Which battery is equivalent to the Varta AUX14?

Only other AGM batteries with its dimensions and polarity: Kronobat AUX14, Exide EK131 and Tudor TK131. Neither an EFB nor a conventional battery replaces the AUX14.

### Which side is the positive terminal on the Varta AUX14?

On the AUX14, 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.

### Is the auxiliary battery replaced together with the main one?

Not necessarily, but they usually age together. If the main battery is over five years old, check the auxiliary one too.

## More batteries to compare with the AUX14

- [More auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries)
- [More Varta models](https://bateriasonline.es/en/varta-batteries)
- [Fulbat AUX14-J](https://bateriasonline.es/en/fulbat-aux14-j) · 14 Ah, 150×87×145 mm

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