# Exide EK143 · Auxiliary battery 12V 14Ah 80A

![Exide EK143 · Auxiliary battery 12V 14Ah 80A](https://bateriasonline.es/258-home_default/exide-ek143.jpg)

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

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

- **Canonical URL**: https://bateriasonline.es/en/exide-ek143
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-EK143
- **EAN**: 3661024036658
- **MPN**: EK143
- **Price**: 40,18 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE 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

Exide EK143: auxiliary battery (AGM) with 12 V, 14 Ah and 80 A cold cranking current, measuring 150 × 100 × 100 mm.

## Description

## Where the Exide EK143 fits

The Exide EK143 is the second battery fitted in many modern cars. Without it, Start-Stop or back-up warnings appear on the dashboard.
The EK143 belongs to the Exide EXIDE Start-Stop Auxiliary range. [The full range of Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Equivalents and alternatives to the Exide EK143

Other AGM batteries that fit the EK143's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Tudor TK143 | 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 |

## Exide EK143 vs EK111 and EK131: differences

What sets the EK143 apart from its neighbours in the Exide range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Exide EK143 (this one) | 14 Ah | 80 A | 150 × 100 × 100 | 4.2 kg |
| Exide EK111 | 11 Ah | 150 A | 150 × 90 × 130 | 3.9 kg |
| Exide EK131 | 13 Ah | 200 A | 150 × 90 × 145 | 4.5 kg |

- Exide EK111: 3 Ah less, 70 A more cranking power, a different case (150 × 90 × 130 mm).
- Exide EK131: 1 Ah less, 120 A more cranking power, a different case (150 × 90 × 145 mm).

## AGM technology in the EK143

Inside, the EK143 has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Check this before ordering the Exide EK143

- The EK143 needs 150 × 100 × 100 mm of space: measure it with the hold-down clamp in place.
- Capacity of the EK143: 14 Ah; the same as your current battery or slightly more is fine.
- The EK143 delivers 80 A cold cranking (EN standard); do not go below what your original battery states.

## Part numbers and codes for the Exide EK143

Shops, garages and catalogues identify the EK143 with these codes:

| Commercial reference | EK143 |
|---|---|
| EAN | 3661024036658 |
| Terminal type | Screwed/Lug |

## Frequently asked questions about the Exide EK143

### EK143 or EK111: which one suits me?

Compared with the EK143, the Exide EK111 has 3 Ah less and 70 A more cranking power. If your current battery says 150 A or more, choose the EK111; if it says 80 A or less, the EK143 is enough. Mind the space: the EK111 measures 150 × 90 × 130 mm.

### How much does the Exide EK143 weigh?

4.2 kg, with 14 Ah of capacity. For reference, the Exide EK111 (11 Ah) weighs 3.9 kg.

### Which battery is equivalent to the Exide EK143?

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

### Which charger does the Exide EK143 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 EK143

- [All auxiliary batteries (back-up and in-vehicle service)](https://bateriasonline.es/en/auxiliary-backup-batteries)
- [Full Exide catalogue](https://bateriasonline.es/en/exide-batteries)
- [Tudor TK143](https://bateriasonline.es/en/tudor-tk143) · 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*