# Tudor TK143 · Auxiliary battery 12V 14Ah 80A

![Tudor TK143 · Auxiliary battery 12V 14Ah 80A](https://bateriasonline.es/2455-home_default/tudor-tk143.jpg)

> Tudor TK143: 14 Ah auxiliary battery, 80 A (EN), 150×100×100 mm, AGM. Equivalent to Exide EK143 and Fulmen FK143.

**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-tk143
- **Language**: en
- **Brand**: Tudor
- **Reference**: BOL-TUDOR-TK143
- **EAN**: 3661024056618
- **MPN**: TK143
- **Price**: 51,85 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Tudor |
| Range | TUDOR Start-Stop Auxiliary |
| Application | Auxiliary and back-up use |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 14 Ah |
| Cold cranking amps (EN) | 80 A |
| Length | 150 mm |
| Width | 100 mm |
| Height | 100 mm |
| Weight | 4.2 kg |
| Terminal layout | 3 |
| Terminal type | Screwed/Lug |

## Quick description

The Tudor TK143 is an auxiliary battery (AGM) with 12 V, 14 Ah and 80 A cold cranking current, measuring 150 × 100 × 100 mm.

## Description

## The Tudor TK143 at a glance

The Tudor TK143 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.
The TK143 belongs to the Tudor TUDOR Start-Stop Auxiliary range. [The full range of Tudor batteries](https://bateriasonline.es/en/tudor-batteries)

## Inside the TK143: AGM technology

The TK143 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the TK143 can be fitted in the boot or under a seat with no risk of spills.

## Tudor TK143 vs TK111 and TK151: which one to choose?

Torn between the TK143 and another similar Tudor? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Tudor TK143 (this one) | 14 Ah | 80 A | 150 × 100 × 100 | 4.2 kg |
| Tudor TK111 | 11 Ah | 150 A | 150 × 90 × 130 | 3.9 kg |
| Tudor TK151 | 15 Ah | 200 A | 150 × 90 × 145 | 4.8 kg |

- Tudor TK111: 3 Ah less, 70 A more cranking power, a different case (150 × 90 × 130 mm).
- Tudor TK151: 1 Ah more, 120 A more cranking power, a different case (150 × 90 × 145 mm).

## Equivalents and alternatives to the Tudor TK143

Other AGM batteries that fit the TK143's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EK143 | AGM | 14 Ah | 80 A | 150 × 100 × 100 |
| Fulmen FK143 | AGM | 14 Ah | 80 A | 150 × 100 × 100 |
| Deta DK143 | AGM | 14 Ah | 80 A | 150 × 100 × 100 |

## Part numbers and codes for the Tudor TK143

Look for any of these TK143 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | TK143 |
|---|---|
| EAN | 3661024056618 |
| Terminal type | Screwed/Lug |

## What to look at before buying the TK143

- Check the EN amps on your battery: if it says 80 A or less, the TK143 covers your engine.
- With 14 Ah, the TK143 replaces an original battery of that capacity or slightly less.
- Measure the space: the TK143 takes up 150 × 100 × 100 mm.

## Frequently asked questions about the Tudor TK143

### TK143 or TK111: which one suits me?

Compared with the TK143, the Tudor TK111 has 3 Ah less and 70 A more cranking power. If your current battery says 150 A or more, choose the TK111; if it says 80 A or less, the TK143 is enough. Mind the space: the TK111 measures 150 × 90 × 130 mm.

### How much does the Tudor TK143 weigh?

4.2 kg, with 14 Ah of capacity. For reference, the Tudor TK111 (11 Ah) weighs 3.9 kg.

### Which battery is equivalent to the Tudor TK143?

Only other AGM batteries with its dimensions and polarity: Exide EK143, Fulmen FK143 and Deta DK143. Neither an EFB nor a conventional battery replaces the TK143.

## More batteries to compare with the TK143

- [Other 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 EK143](https://bateriasonline.es/en/exide-ek143) · 14 Ah, 80 A, 150×100×100 mm
- [Fulmen FK143](https://bateriasonline.es/en/fulmen-fk143) · 14 Ah, 80 A, 150×100×100 mm

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