# NOCO NLX31 marine battery · 120Ah 12V

![NOCO NLX31 marine battery · 120Ah 12V](https://bateriasonline.es/4296-home_default/noco-nlx31-marine-battery.jpg)

> NOCO NLX31 for boats: choose it by the data that matters, with the full technical sheet to compare and order online. 120Ah 12V

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

- **Canonical URL**: https://bateriasonline.es/en/noco-nlx31-marine-battery
- **Language**: en
- **Brand**: NOCO
- **Reference**: BOL-NOCO-NLX31
- **EAN**: 0046221220049
- **MPN**: NLX31
- **Last updated**: 2026-11-10

## Quick description

NOCO NLX31 for boats: lithium battery with 120Ah at 12V. Compare its dimensions, terminals and cranking data in the technical sheet before choosing.
- **Voltage:** 12V
- **Capacity (C20):** 120Ah
- **Dimensions (length × width × height):** 330 × 173 × 218 mm
- **Technology:** Lithium

## Description

## NOCO NLX31: technical data

| Brand | NOCO |
|---|---|
| Reference | NLX31 |
| Range | NOCO LITHIUM NLX |
| Application | boats |
| Voltage | 12V |
| Capacity (C20) | 120Ah |
| Energy | 1536 Wh |
| Technology | Lithium |
| Dimensions (length × width × height) | 330 × 173 × 218 mm |
| Weight | 14.97 kg |
| EAN | 0046221220049 |

## What is the NOCO NLX31 used for?

The NOCO NLX31 is a battery for boats, whether for starting the engine or powering equipment on board. A marine battery has to cope with damp air, constant motion and long periods at the mooring, so a sealed case and solid internal construction matter more than on land.

## lithium technology: what you need to know

Charge lithium batteries only with a charger or controller that has a lithium profile, never with a desulphation or equalisation mode. The built-in management system protects the cells, but avoid charging below freezing unless the battery has its own heating.

## Check these points before you order

- Measure the battery tray: this battery takes up 330 × 173 × 218 mm.
- Compare the capacity with your current battery: this one offers 120Ah.

## Frequently asked questions

### How big and how heavy is the NOCO NLX31?

It measures 330 × 173 × 218 mm and weighs 14.97 kg. Compare these figures with your battery tray and its hold-down before ordering.

### What capacity and voltage does it have?

It works at 12V and offers 120Ah. When several batteries are connected in series or parallel, use identical units of the same model.

### What technology does it use and how should it be charged?

It uses lithium technology. Charge it with a charger that offers a lithium profile, or an automatic one that detects it, and avoid leaving it discharged for long periods.

## Keep comparing

- [More batteries for boats](https://bateriasonline.es/en/marine-boat-batteries)
- [The full NOCO range](https://bateriasonline.es/en/noco-jump-starters)

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