# Fulbat FT12B-4 GEL · Motorcycle battery 12V 10.5Ah 210A

![Fulbat FT12B-4 GEL · Motorcycle battery 12V 10.5Ah 210A](https://bateriasonline.es/681-home_default/fulbat-ft12b-4-gel.jpg)

> Fulbat FT12B-4 GEL: 10.5 Ah motorcycle battery, 210 A (EN), 150×69×130 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-ft12b-4-gel
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FT12B-4 GEL
- **MPN**: FT12B-4 GEL
- **Price**: 67,16 € (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 | 10.5 Ah |
| Cold cranking amps (EN) | 210 A |
| Length | 150 mm |
| Width | 69 mm |
| Height | 130 mm |
| Weight | 3.74 kg |
| Polarity | Positive terminal on the left |

## Quick description

The Fulbat FT12B-4 GEL is a motorcycle battery with 12 V, 10.5 Ah and 210 A cold cranking current, measuring 150 × 69 × 130 mm, with the positive terminal on the left.

## Description

## Who the Fulbat FT12B-4 GEL is for

The Fulbat FT12B-4 GEL is made for motorcycles, scooters and quads. It handles frame vibration and idle periods better than an adapted car battery.
At 10.5 Ah it covers mid-capacity motorcycles, large scooters and light quads. The FT12B-4 GEL belongs to the Fulbat FULBAT Motorcycle GEL range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Part numbers and codes for the Fulbat FT12B-4 GEL

This is how the Fulbat FT12B-4 GEL appears on the label and in parts catalogues:

| Commercial reference | FT12B-4 GEL |
|---|---|
| Not to be confused with | Fulbat FT14B-4 GEL (12.6 Ah, 210 A) |

## Equivalents and alternatives to the Fulbat FT12B-4 GEL

We have no other battery with exactly the dimensions and polarity of the FT12B-4 GEL. Browse the rest of our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) to compare close options.

## Fulbat FT12B-4 GEL vs FTX12-BS GEL, FT14B-4 GEL and FB7-A GEL: differences

How the FT12B-4 GEL compares with Fulbat batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FT12B-4 GEL (this one) | 10.5 Ah | 210 A | 150 × 69 × 130 | left | 3.74 kg |
| Fulbat FTX12-BS GEL | 10.5 Ah | 180 A | 150 × 87 × 130 | left | 4.1 kg |
| Fulbat FT14B-4 GEL | 12.6 Ah | 210 A | 150 × 69 × 145 | left | 4.34 kg |
| Fulbat FB7-A GEL | 8.4 Ah | 120 A | 135 × 75 × 133 | left | 2.9 kg |

- Fulbat FTX12-BS GEL: the same capacity, 30 A less cranking power, a different case (150 × 87 × 130 mm).
- Fulbat FT14B-4 GEL: 2.10 Ah more, the same cranking power, a different height (145 mm instead of 130 mm). It only fits if there is room for 145 mm of height.
- Fulbat FB7-A GEL: 2.10 Ah less, 90 A less cranking power, a different case (135 × 75 × 133 mm).

## Check this before ordering the Fulbat FT12B-4 GEL

- Length, width and height of the FT12B-4 GEL: 150 × 69 × 130 mm.
- The FT12B-4 GEL has the positive terminal on the left: compare it with your current battery.
- With 10.5 Ah, the FT12B-4 GEL replaces an original battery of that capacity or slightly less.
- Check the EN amps on your battery: if it says 210 A or less, the FT12B-4 GEL covers your engine.

## Frequently asked questions about the Fulbat FT12B-4 GEL

### FT12B-4 GEL or FTX12-BS GEL: which one suits me?

Compared with the FT12B-4 GEL, the Fulbat FTX12-BS GEL has 30 A less cranking power. The FT12B-4 GEL cranks harder; the FTX12-BS GEL is only a good option if your original battery says 180 A or less. Mind the space: the FTX12-BS GEL measures 150 × 87 × 130 mm.

### Fulbat FT12B-4 GEL or FT14B-4 GEL: what changes?

Mainly the height: the FT12B-4 GEL is 130 mm tall and the Fulbat FT14B-4 GEL 145 mm, with the same length and width. In capacity and cranking power, the FT14B-4 GEL offers 12.6 Ah and 210 A against 10.5 Ah and 210 A. Before choosing between the FT12B-4 GEL and the FT14B-4 GEL, measure the free height of the battery compartment with the cover or bonnet closed.

### How much does the Fulbat FT12B-4 GEL weigh?

3.74 kg, with 10.5 Ah of capacity. For reference, the Fulbat FTX12-BS GEL (10.5 Ah) weighs 4.1 kg.

### Which side is the positive terminal on the Fulbat FT12B-4 GEL?

On the FT12B-4 GEL, the positive terminal is on the left with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

### Which charger does the Fulbat FT12B-4 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.

## Inside the FT12B-4 GEL: GEL technology

Inside, the FT12B-4 GEL holds its electrolyte in gel form. To charge the FT12B-4 GEL, use a charger with a gel profile.

## More batteries to compare with the FT12B-4 GEL

- [Other motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)
- [Fulbat FT12-10Z GEL](https://bateriasonline.es/en/fulbat-ft12-10z-gel) · 10.5 Ah, 180 A, 194×59×112 mm

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