# Motorcycle battery Fulbat FTX20L-BS 12V 18.9Ah 270A AGM

![Motorcycle battery Fulbat FTX20L-BS 12V 18.9Ah 270A AGM](https://baterias.com/6103-home_default/battery-fulbat-ftx20l-bs-12v-18-9ah-270a.jpg)

> Fulbat FTX20L-BS motorcycle battery 12V 18.9Ah 270A AGM. Motorcycle MF range. Dimensions 175×87×155 mm, + terminal on the right. Verified OEM fitment.

**Category:** [Motorcycle Batteries](https://baterias.com/gb/motorcycle-batteries) → [FULBAT](https://baterias.com/gb/fulbat)

- **Canonical URL**: https://baterias.com/gb/battery-fulbat-ftx20l-bs-12v-18-9ah-270a
- **Language**: en-GB
- **Brand**: FULBAT
- **Reference**: BCOM-FULBAT-FTX20L-BS
- **MPN**: FTX20L-BS
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | FULBAT |
| Model | FULBAT Motorcycle MF |
| Voltage (V) | 12 V |
| Largo | 175 mm |
| Ancho | 87 mm |
| Alto | 155 mm |
| Tecnología | AGM |
| Terminal layout | Positive right |
| Cold cranking amps (EN) | 270 A |
| Capacity (C20) | 18.9 Ah |
| Capacity (C10) | 18 Ah (c10) |

## Quick description

**Fulbat FTX20L-BS 12V 18,9Ah 270A** is a motorcycle starter battery with standard JIS code (the one on your bike's original label). Ready to use, sealed and vibration-resistant. Fits any model that takes the same JIS reference — the code your mechanic recognises at a glance.

### Why this motorcycle battery?

- **Same JIS reference** as your bike's original — fits first time
- **Sealed and ready to use** no acid handling, no refills
- **Survives winter storage** holds charge through long off-season

🔌 Voltage
12 V

⚡ Capacity
18,9 Ah C20

🔋 Cold cranking
270 A EN-1

📏 Dimensions
175×87×155 mm

⚙️ Technology
AGM

🧭 Polarity
Positive on the right

## Description

## Motorcycle battery Fulbat FTX20L-BS 18.9Ah 270A 12V

12*V* Voltage
18.9*Ah* Capacity
270*A* Cold cranking

The **Fulbat FTX20L-BS** is a motorcycle battery with **18.9 Ah** and **270 A** of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. Measuring 175 × 87 × 155 mm and the positive terminal on the right, it is the direct replacement for motorcycles fitted from the factory with a 18.9 Ah battery of this format.
- Holds its charge through winter storage.
- Compact and lightweight format.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Sealed and ready to fit, no acid handling.

### What the Fulbat FTX20L-BS is for

Designed for motorcycles, scooters, quads and personal watercraft, the Fulbat FTX20L-BS replaces the original battery of bikes that use this code or format. Check the position of the positive terminal before ordering.

### Technology inside the Fulbat FTX20L-BS

Fulbat builds the FTX20L-BS to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly.

### Dimensions, polarity and mounting

It has external dimensions of 175 × 87 × 155 mm. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.

### Fulbat: the maker behind the FTX20L-BS

French brand Fulbat is a European reference in motorcycle, garden and leisure batteries: compact ranges, clear JIS codes and a consistent quality that workshops know well. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

### Usage and maintenance tips

Avoid repeated cranking attempts on a cold bike for long: if it does not start on the third try, let the battery rest for a minute. If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure.

### Manufacturer's warranty

The Fulbat FTX20L-BS comes with the **manufacturer's official warranty**. The warranty does not cover discharge through prolonged inactivity: if the bike stands for months, use a trickle charger.

### When you get it and how to return it

Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.

## Frequently asked questions

### How do I change this battery step by step?

In most motorcycles it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On motorcycles with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### How long does the Fulbat FTX20L-BS battery last?

Expected lifespan of the Fulbat FTX20L-BS is 4 to 7 years in regular use (depends on technology and climate). In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.

### What are the dimensions of the Fulbat FTX20L-BS battery?

Dimensions (length × width × height) are 175×87×155 mm — also written as 175x87x155 mm — following the European DIN standard. Always measure the space in your motorcycle before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.

### Will the Fulbat FTX20L-BS battery fit my motorcycle?

Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The FTX20L-BS typically fits a wide range of European vehicles thanks to its standard DIN case format.

### What are the equivalents of the FTX20L-BS model?

Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop motorcycles. See the "Equivalents" section to view recommended options at the same performance level.


## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-09-28*