# Exide EM1000 · Boat battery 12V 50Ah 800A

![Exide EM1000 · Boat battery 12V 50Ah 800A](https://bateriasonline.es/272-home_default/exide-em1000.jpg)

> Exide EM1000: 50 Ah boat battery, 800 A (EN), 260×173×206 mm, positive terminal on the left, AGM. Equivalent to Exide EX900 and Exide EP450.

**Category:** [Marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries) → [Exide](https://bateriasonline.es/en/exide-batteries)

- **Canonical URL**: https://bateriasonline.es/en/exide-em1000
- **Language**: en
- **Brand**: Exide
- **Reference**: BOL-EXIDE-EM1000
- **EAN**: 3661024036023
- **MPN**: EM1000
- **Price**: 250,31 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Exide |
| Range | EXIDE MARINA START AGM |
| Application | Boats |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 50 Ah |
| Cold cranking amps (EN) | 800 A |
| Length | 260 mm |
| Width | 173 mm |
| Height | 206 mm |
| Weight | 17.9 kg |
| Polarity | Positive terminal on the left |
| Terminal type | SAE M 3/8"- 5/16"&stud |

## Quick description

Exide EM1000: boat battery with 12 V, 50 Ah and 800 A cold cranking current, measuring 260 × 173 × 206 mm, with the positive terminal on the left.

## Description

## The Exide EM1000 at a glance

The Exide EM1000 is made for marine use. Fit the EM1000 securely on board and away from bilge water.
The EM1000 belongs to the Exide EXIDE MARINA START AGM range. [The full range of Exide batteries](https://bateriasonline.es/en/exide-batteries)

## Equivalents and alternatives to the Exide EM1000

As the EM1000 is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Exide EX900 | AGM | 50 Ah | 800 A | 260 × 173 × 206 |
| Exide EP450 | AGM | 50 Ah | 750 A | 260 × 173 × 206 |

## Exide EM1000 vs EP450 and EM900: differences

What sets the EM1000 apart from its neighbours in the Exide range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Exide EM1000 (this one) | 50 Ah | 800 A | 260 × 173 × 206 | left | 17.9 kg |
| Exide EP450 | 50 Ah | 750 A | 260 × 173 × 206 | left | 18.6 kg |
| Exide EM900 | 42 Ah | 700 A | 230 × 173 × 206 | – | 15.8 kg |

- Exide EP450: the same capacity, 50 A less cranking power, the same dimensions.
- Exide EM900: 8 Ah less, 100 A less cranking power, a different case (230 × 173 × 206 mm).

## AGM technology in the EM1000

Inside, the EM1000 has glass fibre separators (AGM) that hold the electrolyte. It is fitted in cars with advanced Start-Stop and in deep-cycle equipment.

## Before ordering the EM1000, check this

- The EM1000 needs 260 × 173 × 206 mm of space: measure it with the hold-down clamp in place.
- The EM1000 has the positive terminal on the left: compare it with your current battery.
- With 50 Ah, the EM1000 replaces an original battery of that capacity or slightly less.
- Check the EN amps on your battery: if it says 800 A or less, the EM1000 covers your engine.

## Exide EM1000 codes and part numbers

Shops, garages and catalogues identify the EM1000 with these codes:

| Commercial reference | EM1000 |
|---|---|
| EAN | 3661024036023 |
| Terminal type | SAE M 3/8"- 5/16"&stud |
| Not to be confused with | Exide EA1000 (100 Ah, 900 A, positive terminal on the right), Exide EB1000 (100 Ah, 720 A, positive terminal on the right), Exide EL1000 (100 Ah, 900 A, positive terminal on the right) |

## Frequently asked questions about the Exide EM1000

### Exide EM1000 or EP450?

Compared with the EM1000, the Exide EP450 has 50 A less cranking power. The EM1000 cranks harder; the EP450 is only a good option if your original battery says 750 A or less. Both measure 260 × 173 × 206 mm, so they fit the same tray.

### How much does the Exide EM1000 weigh?

The EM1000 weighs 17.9 kg. For reference, the Exide EP450 (50 Ah) weighs 18.6 kg.

### Which battery is equivalent to the Exide EM1000?

Only other AGM batteries with its dimensions and polarity: Exide EX900 and Exide EP450. Neither an EFB nor a conventional battery replaces the EM1000.

### Which side is the positive terminal on the Exide EM1000?

The EM1000 has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

### Can the Exide EM1000 be used for starting and service at the same time?

Only if it is dual purpose. A starter battery is not built for deep discharge, and a service battery does not deliver the current peak the engine asks for.

## More batteries to compare with the EM1000

- [More marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [The whole Exide range](https://bateriasonline.es/en/exide-batteries)
- [Optima BTSLI-4.2](https://bateriasonline.es/en/optima-btsli-4-2) · 50 Ah, 815 A, 254×175×200 mm

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