# Fulbat FB4L-B GEL · Motorcycle battery 12V 5.3Ah 50A

![Fulbat FB4L-B GEL · Motorcycle battery 12V 5.3Ah 50A](https://bateriasonline.es/407-home_default/fulbat-fb4l-b-gel.jpg)

> Fulbat FB4L-B GEL: 5.3 Ah motorcycle battery, 50 A (EN), 120×70×92 mm, positive terminal on the right, GEL.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-fb4l-b-gel
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FB4L-B GEL
- **MPN**: FB4L-B GEL
- **Price**: 30,74 € (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 | 5.3 Ah |
| Cold cranking amps (EN) | 50 A |
| Length | 120 mm |
| Width | 70 mm |
| Height | 92 mm |
| Weight | 1.6 kg |
| Polarity | Positive terminal on the right |

## Quick description

Fulbat FB4L-B GEL: motorcycle battery with 12 V, 5.3 Ah and 50 A cold cranking current, measuring 120 × 70 × 92 mm, with the positive terminal on the right.

## Description

## Who the Fulbat FB4L-B GEL is for

The Fulbat FB4L-B GEL is made for motorcycles, scooters and quads. With 5.3 Ah, the FB4L-B GEL suits motorcycles and scooters that had a battery of that capacity.
At 5.3 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The FB4L-B GEL belongs to the Fulbat FULBAT Motorcycle GEL range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Fulbat FB4L-B GEL codes and part numbers

This is how the Fulbat FB4L-B GEL appears on the label and in parts catalogues:

| Commercial reference | FB4L-B GEL |
|---|---|
| Not to be confused with | Fulbat FB5L-B GEL (5.3 Ah, 65 A) |

## Equivalents and alternatives to the Fulbat FB4L-B GEL

No other reference in the catalogue fully matches the dimensions and polarity of the FB4L-B GEL; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Fulbat FB4L-B GEL vs FTX4L-BS GEL and FTX5L-BS GEL: which one to choose?

What sets the FB4L-B GEL apart from its neighbours in the Fulbat range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FB4L-B GEL (this one) | 5.3 Ah | 50 A | 120 × 70 × 92 | right | 1.6 kg |
| Fulbat FTX4L-BS / FTZ5S GEL | 5.3 Ah | 70 A | 113 × 70 × 85 | right | 1.7 kg |
| Fulbat FTX5L-BS / FTZ6S GEL | 5.3 Ah | 90 A | 113 × 70 × 105 | right | 1.89 kg |

- Fulbat FTX4L-BS / FTZ5S GEL: the same capacity, 20 A more cranking power, a different case (113 × 70 × 85 mm).
- Fulbat FTX5L-BS / FTZ6S GEL: the same capacity, 40 A more cranking power, a different case (113 × 70 × 105 mm).

## What to look at before buying the FB4L-B GEL

- The FB4L-B GEL delivers 50 A cold cranking (EN standard); do not go below what your original battery states.
- Your current battery should say about 5.3 Ah; a little more is also fine.
- The FB4L-B GEL has the positive terminal on the right: compare it with your current battery.
- Length, width and height of the FB4L-B GEL: 120 × 70 × 92 mm.

## Frequently asked questions about the Fulbat FB4L-B GEL

### Fulbat FB4L-B GEL or FTX4L-BS / FTZ5S GEL?

Compared with the FB4L-B GEL, the Fulbat FTX4L-BS / FTZ5S GEL has 20 A more cranking power. If your current battery says 70 A or more, choose the FTX4L-BS / FTZ5S GEL; if it says 50 A or less, the FB4L-B GEL is enough. Mind the space: the FTX4L-BS / FTZ5S GEL measures 113 × 70 × 85 mm.

### How much does the Fulbat FB4L-B GEL weigh?

The FB4L-B GEL weighs 1.6 kg. For reference, the Fulbat FTX4L-BS / FTZ5S GEL (5.3 Ah) weighs 1.7 kg.

### Which side is the positive terminal on the Fulbat FB4L-B GEL?

The FB4L-B GEL has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

## Inside the FB4L-B GEL: GEL technology

Inside, the FB4L-B GEL holds its electrolyte in gel form. To charge the FB4L-B GEL, use a charger with a gel profile.

## More batteries to compare with the FB4L-B GEL

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries)
- [Fulbat 6N4-2A/A-4 GEL](https://bateriasonline.es/en/fulbat-6n4-2a-a-4-gel) · 4.2 Ah, 25 A, 71×71×93 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*