# Auxiliary Batteries

> 12V AGM auxiliary batteries 5-15 Ah for BMW, Mercedes, Audi, VW, Porsche. Varta Silver Dynamic Aux, Tudor, Exide.

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- **Language**: en-GB

## Description

**Auxiliary batteries** 12V or 5V Li-ion for secondary electrical systems on modern BMW 5/7, Mercedes E/S/AMG, Audi A6/A7/A8, VW Touareg, Porsche Panamera.
Compact 5-15 Ah AGM.

## Products in this category

| Product | Brand | Price |
|---|---|---|
| [VARTA AUX14](https://baterias.com/gb/battery-varta-aux14-12v-13ah-200a) | VARTA | 69,54 € |
| [VARTA AUX9](https://baterias.com/gb/battery-varta-aux9-12v-9ah-130a) | VARTA | 58,42 € |
| [TUDOR TK151](https://baterias.com/gb/battery-tudor-tk151-15ah-200a) | TUDOR | 64,30 € |
| [VARTA AUX1](https://baterias.com/gb/battery-varta-aux1-12v-35ah-520a) | VARTA | 146,80 € |
| [TUDOR TK143](https://baterias.com/gb/battery-tudor-tk143-12v-14ah-80a) | TUDOR | 52,48 € |
| [TUDOR TK111](https://baterias.com/gb/battery-tudor-tk111-11ah-150a) | TUDOR | 169,00 € |
| [TUDOR TK091](https://baterias.com/gb/battery-tudor-tk091-9ah-120a) | TUDOR | 61,07 € |

## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-05-13*