# Fulbat FT4B-BS GEL · Motorcycle battery 12V 2.4Ah 40A

![Fulbat FT4B-BS GEL · Motorcycle battery 12V 2.4Ah 40A](https://bateriasonline.es/763-home_default/fulbat-ft4b-bs-gel.jpg)

> Fulbat FT4B-BS GEL: 2.4 Ah motorcycle battery, 40 A (EN), 113×38×85 mm, GEL. VAT included and shipping cost shown before you pay.

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

- **Canonical URL**: https://bateriasonline.es/en/fulbat-ft4b-bs-gel
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FT4B-BS GEL
- **MPN**: FT4B-BS GEL
- **Price**: 27,51 € (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 | 2.4 Ah |
| Cold cranking amps (EN) | 40 A |
| Length | 113 mm |
| Width | 38 mm |
| Height | 85 mm |
| Weight | 0.91 kg |

## Quick description

The Fulbat FT4B-BS GEL is a motorcycle battery with 12 V, 2.4 Ah and 40 A cold cranking current, measuring 113 × 38 × 85 mm.

## Description

## Who the Fulbat FT4B-BS GEL is for

The Fulbat FT4B-BS GEL is made for motorcycles, scooters and quads. It is worth keeping the FT4B-BS GEL on a maintenance charger if the bike is laid up over winter.
At 2.4 Ah it is a small battery, typical of 50 to 125 cc scooters and light motorcycles. The FT4B-BS GEL belongs to the Fulbat FULBAT Motorcycle GEL range. [More Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat FT4B-BS GEL

We have no other battery with exactly the dimensions and polarity of the FT4B-BS GEL. Browse the rest of our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) to compare close options.

## Fulbat FT4B-BS GEL vs FTR4A-BS GEL and FB3L-A/B GEL: differences

How the FT4B-BS GEL compares with Fulbat batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Weight |
|---|---|---|---|---|
| Fulbat FT4B-BS GEL (this one) | 2.4 Ah | 40 A | 113 × 38 × 85 | 0.91 kg |
| Fulbat FTR4A-BS GEL | 2.4 Ah | 45 A | 113 × 48 × 85 | 0.96 kg |
| Fulbat FB3L-A/B GEL | 3.2 Ah | 35 A | 98 × 56 × 110 | 1.6 kg |

- Fulbat FTR4A-BS GEL: the same capacity, 5 A more cranking power, a different case (113 × 48 × 85 mm).
- Fulbat FB3L-A/B GEL: 0.80 Ah more, 5 A less cranking power, a different case (98 × 56 × 110 mm).

## Before ordering the FT4B-BS GEL, check this

- The FT4B-BS GEL delivers 40 A cold cranking (EN standard); do not go below what your original battery states.
- Capacity of the FT4B-BS GEL: 2.4 Ah; the same as your current battery or slightly more is fine.
- Length, width and height of the FT4B-BS GEL: 113 × 38 × 85 mm.

## Frequently asked questions about the Fulbat FT4B-BS GEL

### FT4B-BS GEL or FTR4A-BS GEL: which one suits me?

Compared with the FT4B-BS GEL, the Fulbat FTR4A-BS GEL has 5 A more cranking power. If your current battery says 45 A or more, choose the FTR4A-BS GEL; if it says 40 A or less, the FT4B-BS GEL is enough. Mind the space: the FTR4A-BS GEL measures 113 × 48 × 85 mm.

### How much does the Fulbat FT4B-BS GEL weigh?

0.91 kg, with 2.4 Ah of capacity. For reference, the Fulbat FTR4A-BS GEL (2.4 Ah) weighs 0.96 kg.

### Which charger does the Fulbat FT4B-BS GEL need?

A charger with a GEL mode not exceeding 14.1-14.4 V. Charging it with a conventional lead-acid profile damages it through overcharging.

## What it means that the FT4B-BS GEL is GEL

Inside, the FT4B-BS GEL holds its electrolyte in gel form. It is the classic technology for wheelchairs, scooters, motorhomes and solar.

## Other options if you are unsure about the FT4B-BS GEL

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)
- [Motobatt MT2.5L](https://bateriasonline.es/en/motobatt-mt2-5l) · 2.5 Ah, 30 A, 81×77×102 mm

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