# Tudor TK500 · Auxiliary battery 12V 50Ah 570A

![Tudor TK500 · Auxiliary battery 12V 50Ah 570A](https://bateriasonline.es/2698-home_default/tudor-tk500.jpg)

> Tudor TK500: 50 Ah auxiliary battery, 570 A (EN), 207×175×190 mm, positive terminal on the right, L1 case, AGM. Equivalent to Exide EK500.

**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-tk500
- **Language**: en
- **Brand**: Tudor
- **Reference**: BOL-TUDOR-TK500
- **EAN**: 3661024057820
- **MPN**: TK500
- **Price**: 106,43 € (VAT incl., Spain)
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Tudor |
| Range | TUDOR AGM |
| Application | Auxiliary and back-up use |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 50 Ah |
| Cold cranking amps (EN) | 570 A |
| Length | 207 mm |
| Width | 175 mm |
| Height | 190 mm |
| Weight | 15 kg |
| Polarity | Positive terminal on the right |
| Terminal type | EN taper post |
| Case size | L1 (207 × 175 × 190 mm) |

## Quick description

Tudor TK500: auxiliary battery (AGM) with 12 V, 50 Ah and 570 A cold cranking current, case size L1 (207 × 175 × 190 mm), with the positive terminal on the right.

## Description

## The Tudor TK500 at a glance

The Tudor TK500 is the second battery fitted in many modern cars. Without it, Start-Stop or back-up warnings appear on the dashboard.
The TK500 belongs to the Tudor TUDOR AGM range. [More Tudor batteries](https://bateriasonline.es/en/tudor-batteries)

## Equivalents and alternatives to the Tudor TK500

Other AGM batteries that fit the TK500's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EK500 | AGM | 50 Ah | 570 A | 207 × 175 × 190 |

## Tudor TK500 vs TK454

What sets the TK500 apart from its neighbours in the Tudor range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Tudor TK500 (this one) | 50 Ah | 570 A | 207 × 175 × 190 | right | 15 kg |
| Tudor TK454 | 45 Ah | 380 A | 237 × 127 × 227 | right | 13.5 kg |

- Tudor TK454: 5 Ah less, 190 A less cranking power, a different case (237 × 127 × 227 mm).

## Inside the TK500: AGM technology

Inside, the TK500 has glass fibre separators (AGM) that hold the electrolyte. The TK500 needs a charger with an AGM mode that does not exceed 14.7 V.

## Before ordering the TK500, check this

- The TK500 needs 207 × 175 × 190 mm of space (European case size L1): measure it with the hold-down clamp in place.
- Polarity of the TK500: positive terminal on the right (if yours has it on the other side, the cables will not reach).
- Your current battery should say about 50 Ah; a little more is also fine.
- The TK500 delivers 570 A cold cranking (EN standard); do not go below what your original battery states.

## Part numbers and codes for the Tudor TK500

This is how the Tudor TK500 appears on the label and in parts catalogues:

| Commercial reference | TK500 |
|---|---|
| EAN | 3661024057820 |
| Case size (EN) | L1 |
| Terminal type | EN taper post |
| Not to be confused with | Tudor TK508 (50 Ah, 800 A), Tudor TB500 (50 Ah, 450 A) |

## Frequently asked questions about the Tudor TK500

### TK500 or TK454: which one suits me?

Compared with the TK500, the Tudor TK454 has 5 Ah less and 190 A less cranking power. The TK500 cranks harder; the TK454 is only a good option if your original battery says 380 A or less. Mind the space: the TK454 measures 237 × 127 × 227 mm.

### How much does the Tudor TK500 weigh?

15 kg, with 50 Ah of capacity. For reference, the Tudor TK454 (45 Ah) weighs 13.5 kg.

### Which battery is equivalent to the Tudor TK500?

Only other AGM batteries with its dimensions and polarity: Exide EK500. Neither an EFB nor a conventional battery replaces the TK500.

### What case size is the Tudor TK500?

Case size L1: 207 × 175 × 190 mm. The TK500 fits any standard L1 battery tray such as the Exide EK500.

### Which side is the positive terminal on the Tudor TK500?

On the TK500, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

### Which charger does the Tudor TK500 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.

## Other options if you are unsure about the TK500

- [More auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries)
- [Full Tudor catalogue](https://bateriasonline.es/en/tudor-batteries)
- [Exide EK500](https://bateriasonline.es/en/exide-ek500) · 50 Ah, 570 A, 207×175×190 mm

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