# Odyssey ODP-AGM31M · Boat battery 87Ah

![Odyssey ODP-AGM31M · Boat battery 87Ah](https://bateriasonline.es/3673-home_default/odyssey-odp-agm31m.jpg)

> Odyssey ODP-AGM31M: 87 Ah boat battery, 328×173×254 mm, positive terminal on the left, TPPL. Ask for a no-obligation quote.

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

- **Canonical URL**: https://bateriasonline.es/en/odyssey-odp-agm31m
- **Language**: en
- **Brand**: Odyssey
- **Reference**: BOL-ODYSSEY-ODP-AGM31M
- **MPN**: ODP-AGM31M
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Odyssey |
| Range | ODP |
| Application | Boats |
| Technology | TPPL |
| Capacity | 87 Ah |
| Length | 328 mm |
| Width | 173 mm |
| Height | 254 mm |
| Weight | 28.7 kg |
| Polarity | Positive terminal on the left |
| Terminal type | M |

## Quick description

The Odyssey ODP-AGM31M is a boat battery with 87 Ah, measuring 328 × 173 × 254 mm, with the positive terminal on the left.

## Description

## Where the Odyssey ODP-AGM31M fits

The Odyssey ODP-AGM31M is a battery for boats: engine starting or on-board service, depending on its design, with resistance to damp and hull vibration. Check whether your boat needs starting, service or a dual-purpose battery before choosing.
The ODP-AGM31M belongs to the Odyssey ODP range. [See all Odyssey batteries](https://bateriasonline.es/en/odyssey-batteries)

## Equivalents and alternatives to the Odyssey ODP-AGM31M

We have no other battery with exactly the dimensions and polarity of the ODP-AGM31M. Browse the rest of our [marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries) to compare close options.

## What it means that the ODP-AGM31M is TPPL

The ODP-AGM31M is TPPL: thin plate pure lead AGM. It is the technology behind ODYSSEY, GENESIS and PowerSafe.

## What to look at before buying the ODP-AGM31M

- Length, width and height of the ODP-AGM31M: 328 × 173 × 254 mm.
- Polarity of the ODP-AGM31M: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- With 87 Ah, the ODP-AGM31M replaces an original battery of that capacity or slightly less.

## Part numbers and codes for the Odyssey ODP-AGM31M

Look for any of these ODP-AGM31M codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | ODP-AGM31M |
|---|---|
| Terminal type | M |
| Not to be confused with | Odyssey ODP-AGM31A (100 Ah, 925 A), Odyssey ODP-AGM31 (100 Ah, 925 A), Odyssey ODP-AGM34M (60 Ah) |

## Frequently asked questions about the Odyssey ODP-AGM31M

### How much does the Odyssey ODP-AGM31M weigh?

28.7 kg, with 87 Ah of capacity.

### Which side is the positive terminal on the Odyssey ODP-AGM31M?

On the ODP-AGM31M, the positive terminal is on the left with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

### Can the Odyssey ODP-AGM31M 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 ODP-AGM31M

- [Other marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [More Odyssey models](https://bateriasonline.es/en/odyssey-batteries)
- [Odyssey ODP-AGM27M](https://bateriasonline.es/en/odyssey-odp-agm27m) · 85 Ah, 318×173×224 mm
- [Odyssey ODX-AGM31M](https://bateriasonline.es/en/odyssey-odx-agm31m) · 103 Ah, 330×173×251 mm

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