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Fulbat FTX20-BS Motorcycle MF · Battery 18.9Ah 270A AGM

Specifications

BrandFULBAT
Part numberFTX20-BS
Voltage (V)12V
Capacity (C20)18.90Ah
Capacity (C10)18Ah (c10)
Cold cranking amps (EN)270A
TechnologyAGM
Length175mm
Width87mm
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Fulbat FTX20-BS 12V 18,9Ah 270A is a sealed motorcycle battery ready to fit, with the JIS reference your mechanic recognises at a glance. Vibration-resistant, keeps voltage during the winter off-season and cranks first time when you take it out for a ride.

Why this motorcycle battery?

  • Same JIS referenceas your bike's original — fits first time
  • Sealed and ready to useno acid handling, no refills
  • Survives winter storageholds 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 left

Where it fits: the Fulbat FTX20-BS is one of our motorcycle batteries, belongs to our Fulbat batteries and by capacity it sits among our 18Ah batteries.

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Motorcycle battery Fulbat FTX20-BS 18.9Ah 270A 12V

12VVoltage
18.9AhCapacity
270ACold cranking

The Fulbat FTX20-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. It measures 175 × 87 × 155 mm and the positive terminal on the left, the format sought by anyone replacing a 18.9 Ah battery in motorcycles.

  • Same JIS code as the original battery: fits first time.
  • AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
  • Energetic cranking for high-compression engines.
  • Resistant to the vibration typical of two wheels.

What the Fulbat FTX20-BS is for

With 18.9 Ah, the Fulbat FTX20-BS covers the starting of motorcycles, scooters, quads and personal watercraft. The JIS code on your current battery label is the safest way to confirm equivalence.

Technology inside the Fulbat FTX20-BS

Within the Fulbat catalogue, the FTX20-BS is the 18.9 Ah model designed for this application.

In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.

Will it fit your current battery tray?

The Fulbat FTX20-BS is made in the 175 × 87 × 155 mm format. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

Fulbat: the maker behind the FTX20-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. All the Fulbat batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

How to make it last longer

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. Check the resting voltage before the season (above 12.6 V on a charged battery) and make sure the terminals are clean and tight.

Manufacturer's warranty

The Fulbat FTX20-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

Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.

  • Reference
    BCOM-FULBAT-FTX20-BS

Data sheet

  • Brand
    FULBAT
  • Model
    FULBAT Motorcycle MF
  • Voltage (V)
    12V
  • Length
    175mm
  • Width
    87mm
  • Height
    155mm
  • Technology
    AGM
  • Terminal layout
    Positive left
  • Cold cranking amps (EN)
    270A
  • Capacity (C20)
    18.90Ah
  • Capacity (C10)
    18Ah (c10)

Specific References

  • MPN
    FTX20-BS

Download

Datasheet Fulbat FTX20-BS

PDF datasheet of the Fulbat FTX20-BS battery

Download (326.17KB)

Fulbat FTX20-BS: alternatives with the same dimensions — alternatives with the same dimensions, Ah and CCA

Batteries from our catalogue with the same dimensions, voltage and technology as the Fulbat FTX20-BS and a similar capacity, sorted by sales. They are not manufacturer-approved equivalents: check the polarity and capacity of your original battery.

Product Specifications Technology Price
Fulbat FTX20-BS Fulbat FTX20-BS This battery 12V 18.9Ah 270A AGM
Exide ETX20H-BS Exide ETX20H-BS Same size 12V 18Ah 270A AGM €57.70 +€57.70

Fulbat FTX20-BS vs Exide ETX20H-BS

Same size · +€57.70

It has the same dimensions, voltage and technology as the FTX20-BS, although it is not a manufacturer-approved equivalent. Compared with the FTX20-BS it has the same Ah and cranking power. It costs €57.70 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.

FTX20-BSETX20H-BS
Capacity18 Ah18 Ah
Cold cranking (EN)270 A270 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155175 × 90 × 155
Positive terminalPositive leftPositive terminal on the left
Price€57.70
Exide AGM12-19.1 Exide AGM12-19.1 Same size 12V 18Ah 270A AGM €79.10 +€79.10

Fulbat FTX20-BS vs Exide AGM12-19.1

Same size · +€79.10

Same case and same technology as the FTX20-BS: an alternative by size, not an official equivalent. Compared with the FTX20-BS it has the same Ah and cranking power. It costs €79.10 more. If the polarity matches and your bike had a similar capacity, it works as a replacement; if in doubt, ask us with your model.

FTX20-BSAGM12-19.1
Capacity18 Ah18 Ah
Cold cranking (EN)270 A270 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155175 × 90 × 155
Positive terminalPositive leftPositive terminal on the left
Price€79.10
Varta YTX20-BS Varta YTX20-BS Same size 12V 18Ah 250A AGM €112.60 +€112.60

Fulbat FTX20-BS vs Varta YTX20-BS

Same size · +€112.60

It has the same dimensions, voltage and technology as the FTX20-BS, although it is not a manufacturer-approved equivalent. Compared with the FTX20-BS it has 20 A of cold cranking less. It costs €112.60 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.

FTX20-BSYTX20-BS
Capacity18 Ah18 Ah
Cold cranking (EN)270 A250 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155177 × 88 × 156
Positive terminalPositive leftPositive terminal on the left
Price€112.60

Automatic selection by dimensions (±3 mm), voltage, technology and capacity (−10 % / +20 %). Official manufacturer warranty on every option.

Other 18Ah batteries: We stock 28 models of 18 Ah to compare by price, technology and cold cranking: see all 18Ah batteries. Same size (175 × 87 × 155 mm): batteries of 175 × 87 × 155 mm.

Recommended accessories — complement the Fulbat FTX20-BS with a charger or tester

Frequently asked questions

Is this battery AGM? What is it for?

Yes: the FTX20-BS from Fulbat uses AGM (Absorbent Glass Mat) technology, a sealed lead-acid battery whose electrolyte soaks a glass-fibre mat. It tolerates heat better and handles more cycles than a conventional battery.

How should this motorcycle battery be charged?

With a 12 V motorcycle charger delivering at most 10 % of its capacity: 1.9 A for its 18.9 Ah. High-current car chargers can damage it. If the bike is laid up for the winter, keep it on a maintenance charger.

Does it need maintenance?

No: being AGM, it is sealed and nothing needs topping up. Just keep it charged if the bike stands for a long time.

How many years does this battery last?

Estimated lifespan of the Fulbat FTX20-BS: 4 to 6 years, keeping it charged when the bike is not in use. Treat it as an approximate guide, as every case is different. Many factors play a part: how it is used (lots of short trips, for example), temperature (cold makes every start harder and intense heat evaporates the electrolyte), the condition of the alternator and charging system, power drawn with the engine off and maintenance.

What are the dimensions of the Fulbat FTX20-BS battery?

Its dimensions are 175×87×155 mm, also written 175x87x155 mm; the height already includes the terminals. Check the room available in your motorcycle, because a single millimetre too much can stop the clamp from closing.

On which side is the positive of the FTX20-BS model?

The FTX20-BS has the positive on the left: that is its polarity. If your current battery has its positive on the other side, this one is not suitable without longer cables or a reconfigured system (short-circuit risk). Face the battery with its terminals nearest you and see which side the positive post (+, red ring) is on.

Will the Fulbat FTX20-BS battery fit my motorcycle?

For your own vehicle: type your number plate into the finder (DGT/DVLA/KBA identify model and engine), check the "Compatible vehicles" tab below, listing vehicles verified by our technical team, or message us on WhatsApp with make, model, engine and year; we reply during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). Always cross-check with what the motorcycle manufacturer states in the owner's handbook.

What are the equivalents of the FTX20-BS model?

Interchangeable means the same dimensions, same polarity, same Ah and same CCA; for the FTX20-BS, 18.9 Ah (270 A cranking). See the "Equivalents" section of this page for the recommended options at the same performance level.


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