# Odyssey ODP-AGM27M · Boat battery 85Ah

![Odyssey ODP-AGM27M · Boat battery 85Ah](https://bateriasonline.es/3670-home_default/odyssey-odp-agm27m.jpg)

> Odyssey ODP-AGM27M: 85 Ah boat battery, 318×173×224 mm, positive terminal on the left, TPPL. Price on request: ask for a free 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-agm27m
- **Language**: en
- **Brand**: Odyssey
- **Reference**: BOL-ODYSSEY-ODP-AGM27M
- **MPN**: ODP-AGM27M
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Odyssey |
| Range | ODP |
| Application | Boats |
| Technology | TPPL |
| Capacity | 85 Ah |
| Length | 318 mm |
| Width | 173 mm |
| Height | 224 mm |
| Weight | 27.1 kg |
| Polarity | Positive terminal on the left |
| Terminal type | M |

## Quick description

Odyssey ODP-AGM27M: boat battery with 85 Ah, measuring 318 × 173 × 224 mm, with the positive terminal on the left.

## Description

## The Odyssey ODP-AGM27M at a glance

The Odyssey ODP-AGM27M is a battery for boats: engine starting or on-board service, depending on its design, with resistance to damp and hull vibration. With 85 Ah, the ODP-AGM27M suits boats that had a battery of that capacity.
The ODP-AGM27M belongs to the Odyssey ODP range. [More Odyssey batteries](https://bateriasonline.es/en/odyssey-batteries)

## Inside the ODP-AGM27M: TPPL technology

The ODP-AGM27M is TPPL: thin plate pure lead AGM. It is the technology behind ODYSSEY, GENESIS and PowerSafe.

## Equivalents and alternatives to the Odyssey ODP-AGM27M

We have no other battery with exactly the dimensions and polarity of the ODP-AGM27M. Browse the rest of our [marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries) to compare close options.

## Part numbers and codes for the Odyssey ODP-AGM27M

The ODP-AGM27M is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | ODP-AGM27M |
|---|---|
| Terminal type | M |
| Not to be confused with | Odyssey ODP-AGM27F (85 Ah, 850 A), Odyssey ODP-AGM27 (85 Ah, 850 A), Odyssey ODP-AGM24M (63 Ah) |

## What to look at before buying the ODP-AGM27M

- With 85 Ah, the ODP-AGM27M replaces an original battery of that capacity or slightly less.
- The ODP-AGM27M has the positive terminal on the left: compare it with your current battery.
- The ODP-AGM27M needs 318 × 173 × 224 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Odyssey ODP-AGM27M

### How much does the Odyssey ODP-AGM27M weigh?

27.1 kg, with 85 Ah of capacity.

### Which side is the positive terminal on the Odyssey ODP-AGM27M?

On the ODP-AGM27M, 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.

### How do I look after the boat battery in winter?

Leave it 100% charged, disconnected or on a marine maintenance charger. A battery that spends the winter half-discharged loses capacity permanently.

## More batteries to compare with the ODP-AGM27M

- [More marine and boat batteries](https://bateriasonline.es/en/marine-boat-batteries)
- [The whole Odyssey range](https://bateriasonline.es/en/odyssey-batteries)
- [Odyssey ODP-AGM31M](https://bateriasonline.es/en/odyssey-odp-agm31m) · 87 Ah, 328×173×254 mm

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