# Fulbat 12N5.5-4A/4B GEL · Motorcycle battery 12V 5.8Ah 70A

![Fulbat 12N5.5-4A/4B GEL · Motorcycle battery 12V 5.8Ah 70A](https://bateriasonline.es/575-home_default/fulbat-12n5-5-4a-4b-gel.jpg)

> Fulbat 12N5.5-4A/4B GEL: 5.8 Ah motorcycle battery, 70 A (EN), 135×60×130 mm, positive terminal on the left, GEL.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-12n5-5-4a-4b-gel
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-12N5.5-4A/4B GEL
- **MPN**: 12N5.5-4A/4B GEL
- **Price**: 41,04 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle GEL |
| Application | Motorcycles |
| Technology | GEL |
| Voltage | 12 V |
| Capacity | 5.8 Ah |
| Cold cranking amps (EN) | 70 A |
| Length | 135 mm |
| Width | 60 mm |
| Height | 130 mm |
| Weight | 2.1 kg |
| Polarity | Positive terminal on the left |

## Quick description

Fulbat 12N5.5-4A/4B GEL: motorcycle battery with 12 V, 5.8 Ah and 70 A cold cranking current, measuring 135 × 60 × 130 mm, with the positive terminal on the left. If yours has the positive terminal on the right, you need the Fulbat 12N5.5-3B GEL.

## Description

## Who the Fulbat 12N5.5-4A/4B GEL is for

The Fulbat 12N5.5-4A/4B GEL is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. It is worth keeping the 12N5.5-4A/4B GEL on a maintenance charger if the bike is laid up over winter.
At 5.8 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The 12N5.5-4A/4B GEL belongs to the Fulbat FULBAT Motorcycle GEL range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat 12N5.5-4A/4B GEL

No other reference in the catalogue fully matches the dimensions and polarity of the 12N5.5-4A/4B GEL; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Fulbat 12N5.5-4A/4B GEL vs FT7B-4 GEL, 12N5.5-3B GEL and FTX7A-BS GEL

The real differences between the 12N5.5-4A/4B GEL and the closest Fulbat models:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat 12N5.5-4A/4B GEL (this one) | 5.8 Ah | 70 A | 135 × 60 × 130 | left | 2.1 kg |
| Fulbat FT7B-4 GEL | 6.8 Ah | 110 A | 150 × 65 × 93 | left | 2.39 kg |
| Fulbat 12N5.5-3B GEL | 5.8 Ah | 70 A | 135 × 60 × 130 | right | 2.1 kg |
| Fulbat FTX7A-BS GEL | 6.3 Ah | 90 A | 150 × 87 × 93 | left | 2.49 kg |

- Fulbat FT7B-4 GEL: 1 Ah more, 40 A more cranking power, a different case (150 × 65 × 93 mm).
- Fulbat 12N5.5-3B GEL: identical to the 12N5.5-4A/4B GEL except for the positive terminal, which is on the other side (positive terminal on the right).
- Fulbat FTX7A-BS GEL: 0.5 Ah more, 20 A more cranking power, a different case (150 × 87 × 93 mm).

## What to look at before buying the 12N5.5-4A/4B GEL

- Length, width and height of the 12N5.5-4A/4B GEL: 135 × 60 × 130 mm.
- With the terminals facing you, the positive terminal of the 12N5.5-4A/4B GEL is on the left.
- With 5.8 Ah, the 12N5.5-4A/4B GEL replaces an original battery of that capacity or slightly less.
- Check the EN amps on your battery: if it says 70 A or less, the 12N5.5-4A/4B GEL covers your engine.

## Frequently asked questions about the Fulbat 12N5.5-4A/4B GEL

### Fulbat 12N5.5-4A/4B GEL or FT7B-4 GEL?

Compared with the 12N5.5-4A/4B GEL, the Fulbat FT7B-4 GEL has 1 Ah more and 40 A more cranking power. If your current battery says 110 A or more, choose the FT7B-4 GEL; if it says 70 A or less, the 12N5.5-4A/4B GEL is enough. Mind the space: the FT7B-4 GEL measures 150 × 65 × 93 mm.

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

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

### How much does the Fulbat 12N5.5-4A/4B GEL weigh?

The 12N5.5-4A/4B GEL weighs 2.1 kg. For reference, the Fulbat FT7B-4 GEL (6.8 Ah) weighs 2.39 kg.

## Inside the 12N5.5-4A/4B GEL: GEL technology

The 12N5.5-4A/4B GEL is a gel battery: the electrolyte is immobilised in silica gel. The 12N5.5-4A/4B GEL handles repeated deep discharges well, its strong point compared with an AGM.

## Keep comparing: alternatives to the 12N5.5-4A/4B GEL

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [More Fulbat models](https://bateriasonline.es/en/fulbat-batteries)

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