# Fulbat 12N5.5-3B · Motorcycle battery 12V 5.8Ah 55A

![Fulbat 12N5.5-3B · Motorcycle battery 12V 5.8Ah 55A](https://bateriasonline.es/381-home_default/fulbat-12n5-5-3b.jpg)

> Fulbat 12N5.5-3B: 5.8 Ah motorcycle battery, 55 A (EN), 135×60×130 mm, positive terminal on the right. Equivalent to Varta 12N5.5-3B.

**Category:** [Motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) → [Fulbat](https://bateriasonline.es/en/fulbat-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulbat-12n5-5-3b
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-12N5.5-3B
- **MPN**: 12N5.5-3B
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle DRY |
| Application | Motorcycles |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 5.8 Ah |
| Cold cranking amps (EN) | 55 A |
| Length | 135 mm |
| Width | 60 mm |
| Height | 130 mm |
| Weight | 2.27 kg |
| Polarity | Positive terminal on the right |

## Quick description

Fulbat 12N5.5-3B: motorcycle battery with 12 V, 5.8 Ah and 55 A cold cranking current, measuring 135 × 60 × 130 mm, with the positive terminal on the right. With the positive terminal on the left, the exact counterpart is the Fulbat 12N5.5-4A.

## Description

## The Fulbat 12N5.5-3B at a glance

The Fulbat 12N5.5-3B is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. With 5.8 Ah, the 12N5.5-3B suits motorcycles and scooters that had a battery of that capacity.
At 5.8 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The 12N5.5-3B belongs to the Fulbat FULBAT Motorcycle DRY range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat 12N5.5-3B

Same dimensions and polarity as the 12N5.5-3B, with similar capacity and cranking power; as a conventional battery, the 12N5.5-3B can also be replaced by an EFB or AGM of the same size if you want more cycles.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Varta 12N5.5-3B | Lead-acid | 5.5 Ah | 55 A | 136 × 61 × 131 |

## Fulbat 12N5.5-3B vs FB5L-B, 12N5.5-4A and FTX7L-BS

What sets the 12N5.5-3B apart from its neighbours in the Fulbat range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat 12N5.5-3B (this one) | 5.8 Ah | 55 A | 135 × 60 × 130 | right | 2.27 kg |
| Fulbat FB5L-B | 5.3 Ah | 65 A | 120 × 60 × 130 | right | 2.03 kg |
| Fulbat 12N5.5-4A | 5.8 Ah | 55 A | 135 × 60 × 130 | left | 2.27 kg |
| Fulbat FTX7L-BS | 6.3 Ah | 100 A | 113 × 70 × 130 | right | 2.31 kg |

- Fulbat FB5L-B: 0.5 Ah less, 10 A more cranking power, a different case (120 × 60 × 130 mm).
- The Fulbat 12N5.5-4A is the same battery with the positive terminal on the other side: choose it if your current battery has the positive terminal on the left.
- Fulbat FTX7L-BS: 0.5 Ah more, 45 A more cranking power, a different case (113 × 70 × 130 mm), AGM technology.

## Check this before ordering the Fulbat 12N5.5-3B

- Cold cranking: 55 A (EN), equal to or higher than the original.
- Capacity of the 12N5.5-3B: 5.8 Ah; the same as your current battery or slightly more is fine.
- With the terminals facing you, the positive terminal of the 12N5.5-3B is on the right.
- Length, width and height of the 12N5.5-3B: 135 × 60 × 130 mm.

## Frequently asked questions about the Fulbat 12N5.5-3B

### Fulbat 12N5.5-3B or FB5L-B?

Compared with the 12N5.5-3B, the Fulbat FB5L-B has 0.5 Ah less and 10 A more cranking power. If your current battery says 65 A or more, choose the FB5L-B; if it says 55 A or less, the 12N5.5-3B is enough. Mind the space: the FB5L-B measures 120 × 60 × 130 mm.

### What is the difference between the Fulbat 12N5.5-3B and the 12N5.5-4A?

They are the same battery with the terminals swapped: positive terminal on the right on the 12N5.5-3B, positive terminal on the left on the 12N5.5-4A. Look at your current battery with the terminals facing you and pick the one that matches.

### How much does the Fulbat 12N5.5-3B weigh?

The 12N5.5-3B weighs 2.27 kg. For reference, the Fulbat FB5L-B (5.3 Ah) weighs 2.03 kg.

### Which battery is equivalent to the Fulbat 12N5.5-3B?

With the same dimensions, polarity and similar capacity you have the Varta 12N5.5-3B. As the 12N5.5-3B is a conventional battery, an EFB or AGM of the same size also works.

### Which charger does the Fulbat 12N5.5-3B need?

An automatic lead-acid charger with cut-off or maintenance mode, rated at 10 to 20% of its capacity in amps. If it is a vented type, check the electrolyte level and top up only with distilled water.

## What it means that the 12N5.5-3B is lead-acid

The 12N5.5-3B is a conventional lead-acid battery, with plates immersed in liquid electrolyte. In cars without energy management, the 12N5.5-3B needs no special registration: just connect it.

## More batteries to compare with the 12N5.5-3B

- [More motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries)
- [Exide 12N5,5-3B](https://bateriasonline.es/en/exide-12n5-5-3b) · 6 Ah, 45 A, 135×60×130 mm

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