# Exide EK454 · Auxiliary battery 12V 45Ah 380A

![Exide EK454 · Auxiliary battery 12V 45Ah 380A](https://bateriasonline.es/349-home_default/exide-ek454.jpg)

> Exide EK454: 45 Ah auxiliary battery, 380 A (EN), 237×127×227 mm, positive terminal on the right, B24 case, AGM. Equivalent to Tudor TK454.

**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-ek454
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-EK454
- **EAN**: 3661024038072
- **MPN**: EK454
- **Price**: 207,87 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE AGM |
| Application | Auxiliary and back-up use |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 45 Ah |
| Cold cranking amps (EN) | 380 A |
| Length | 237 mm |
| Width | 127 mm |
| Height | 227 mm |
| Weight | 13.5 kg |
| Polarity | Positive terminal on the right |
| Terminal type | /eu/sites/default/files/sharepoint/2ukj6 VpEwZBWFAE-3_hIW3h1 I-tcwwga4_sk-5NFyC8-large.png?itokVE1ON_SC |
| Case size | B24 (238 × 129 × 227 mm) |

## Quick description

The Exide EK454 is an auxiliary battery (AGM) with 12 V, 45 Ah and 380 A cold cranking current, case size B24 (237 × 127 × 227 mm), with the positive terminal on the right. If yours has the positive terminal on the left, you need the Exide EK457.

## Description

## The Exide EK454 at a glance

The Exide EK454 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 EK454 belongs to the Exide EXIDE AGM range. [More Exide batteries](https://bateriasonline.es/en/exide-batteries)

## What it means that the EK454 is AGM

The EK454 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the EK454 can be fitted in the boot or under a seat with no risk of spills.

## Exide EK454 vs EK500 and EK457: which one to choose?

Torn between the EK454 and another similar Exide? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide EK454 (this one) | 45 Ah | 380 A | 237 × 127 × 227 | right | 13.5 kg |
| Exide EK500 | 50 Ah | 570 A | 207 × 175 × 190 | right | 15 kg |
| Exide EK457 | 45 Ah | 380 A | 237 × 127 × 227 | left | 13.5 kg |

- Exide EK500: 5 Ah more, 190 A more cranking power, a different case (207 × 175 × 190 mm).
- Exide EK457: identical to the EK454 except for the positive terminal, which is on the other side (positive terminal on the left).

## Equivalents and alternatives to the Exide EK454

Other AGM batteries that fit the EK454's tray with the same polarity: an AGM can only be replaced by another AGM.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Tudor TK454 | AGM | 45 Ah | 380 A | 237 × 127 × 227 |

## Part numbers and codes for the Exide EK454

Look for any of these EK454 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | EK454 |
|---|---|
| EAN | 3661024038072 |
| Case size (EN) | B24 |
| Terminal type | /eu/sites/default/files/sharepoint/2ukj6VpEwZBWFAE-3_hIW3h1I-tcwwga4_sk-5NFyC8-large.png?itokVE1ON_SC |
| Not to be confused with | Exide EB454 (45 Ah, 330 A), Exide EK457 (45 Ah, 380 A, positive terminal on the left) |

## Before ordering the EK454, check this

- Check the EN amps on your battery: if it says 380 A or less, the EK454 covers your engine.
- With 45 Ah, the EK454 replaces an original battery of that capacity or slightly less.
- With the terminals facing you, the positive terminal of the EK454 is on the right.
- The EK454 needs 237 × 127 × 227 mm of space (European case size B24): measure it with the hold-down clamp in place.

## Frequently asked questions about the Exide EK454

### EK454 or EK500: which one suits me?

Compared with the EK454, the Exide EK500 has 5 Ah more and 190 A more cranking power. If your current battery says 570 A or more, choose the EK500; if it says 380 A or less, the EK454 is enough. Mind the space: the EK500 measures 207 × 175 × 190 mm.

### Exide EK454 or EK457: what is the difference?

Only the polarity: the EK454 has the positive terminal on the right and the EK457 the positive terminal on the left. Capacity (45 Ah), cranking power and dimensions are identical.

### How much does the Exide EK454 weigh?

13.5 kg, with 45 Ah of capacity. For reference, the Exide EK500 (50 Ah) weighs 15 kg.

### Which battery is equivalent to the Exide EK454?

Only other AGM batteries with its dimensions and polarity: Tudor TK454. Neither an EFB nor a conventional battery replaces the EK454.

### What case size is the Exide EK454?

Case size B24: 237 × 127 × 227 mm. The EK454 fits any standard B24 battery tray such as the Tudor TK454.

### Which charger does the Exide EK454 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.

## More batteries to compare with the EK454

- [Other 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 TK454](https://bateriasonline.es/en/tudor-tk454) · 45 Ah, 380 A, 237×127×227 mm

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