# Fulbat FTX20A-BS GEL · Motorcycle battery 12V 18.9Ah 270A

![Fulbat FTX20A-BS GEL · Motorcycle battery 12V 18.9Ah 270A](https://bateriasonline.es/790-home_default/fulbat-ftx20a-bs-gel.jpg)

> Fulbat FTX20A-BS GEL: 18.9 Ah motorcycle battery, 270 A (EN), 150×87×161 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-ftx20a-bs-gel
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-FTX20A-BS GEL
- **MPN**: FTX20A-BS GEL
- **Price**: 93,16 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle GEL |
| Application | Motorcycles |
| Technology | GEL |
| Voltage | 12 V |
| Capacity | 18.9 Ah |
| Cold cranking amps (EN) | 270 A |
| Length | 150 mm |
| Width | 87 mm |
| Height | 161 mm |
| Weight | 5.6 kg |
| Polarity | Positive terminal on the left |

## Quick description

Fulbat FTX20A-BS GEL: motorcycle battery with 12 V, 18.9 Ah and 270 A cold cranking current, measuring 150 × 87 × 161 mm, with the positive terminal on the left.

## Description

## Where the Fulbat FTX20A-BS GEL fits

The Fulbat FTX20A-BS GEL is made for motorcycles, scooters and quads. With 18.9 Ah, the FTX20A-BS GEL suits motorcycles and scooters that had a battery of that capacity.
At 18.9 Ah it goes into large-capacity motorcycles, adventure bikes, customs and quads. The FTX20A-BS GEL belongs to the Fulbat FULBAT Motorcycle GEL range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Fulbat FTX20A-BS GEL codes and part numbers

Shops, garages and catalogues identify the FTX20A-BS GEL with these codes:

| Commercial reference | FTX20A-BS GEL |
|---|---|
| Not to be confused with | Fulbat FTX20-BS GEL (18.9 Ah, 270 A) |

## Equivalents and alternatives to the Fulbat FTX20A-BS GEL

No other reference in the catalogue fully matches the dimensions and polarity of the FTX20A-BS GEL; you will find the closest ones among our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries).

## Fulbat FTX20A-BS GEL vs FTX16 GEL and FTX14-BS GEL

What sets the FTX20A-BS GEL apart from its neighbours in the Fulbat range:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat FTX20A-BS GEL (this one) | 18.9 Ah | 270 A | 150 × 87 × 161 | left | 5.6 kg |
| Fulbat FTX16 GEL | 14.7 Ah | 230 A | 150 × 87 × 161 | left | 5.05 kg |
| Fulbat FTX14-BS GEL | 12.6 Ah | 200 A | 150 × 87 × 145 | left | 4.31 kg |

- Fulbat FTX16 GEL: 4.20 Ah less, 40 A less cranking power, the same dimensions.
- Fulbat FTX14-BS GEL: 6.30 Ah less, 70 A less cranking power, a different case (150 × 87 × 145 mm).

## Check this before ordering the Fulbat FTX20A-BS GEL

- Check the EN amps on your battery: if it says 270 A or less, the FTX20A-BS GEL covers your engine.
- Your current battery should say about 18.9 Ah; a little more is also fine.
- Polarity of the FTX20A-BS GEL: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- Length, width and height of the FTX20A-BS GEL: 150 × 87 × 161 mm.

## Frequently asked questions about the Fulbat FTX20A-BS GEL

### Fulbat FTX20A-BS GEL or FTX16 GEL?

Compared with the FTX20A-BS GEL, the Fulbat FTX16 GEL has 4.20 Ah less and 40 A less cranking power. The FTX20A-BS GEL cranks harder; the FTX16 GEL is only a good option if your original battery says 230 A or less. Both measure 150 × 87 × 161 mm, so they fit the same tray.

### How much does the Fulbat FTX20A-BS GEL weigh?

The FTX20A-BS GEL weighs 5.6 kg. For reference, the Fulbat FTX16 GEL (14.7 Ah) weighs 5.05 kg.

### Which side is the positive terminal on the Fulbat FTX20A-BS GEL?

The FTX20A-BS GEL has the positive terminal on the left, looking at the battery from its long side with the terminals closest to you.

### How do I stop the motorcycle battery going flat in winter?

Connect it to a maintenance charger or disconnect it if the bike will sit for more than a month. A flat motorcycle battery sulphates in a few weeks.

## What it means that the FTX20A-BS GEL is GEL

Inside, the FTX20A-BS GEL holds its electrolyte in gel form. It is the classic technology for wheelchairs, scooters, motorhomes and solar.

## Keep comparing: alternatives to the FTX20A-BS GEL

- [All motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries)

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