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Fulbat FTX20L-BS Motorcycle MF · Battery 18.9Ah 270A AGM

Specifications

BrandFULBAT
Part numberFTX20L-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 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 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 right

Where it fits: the Fulbat FTX20L-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 FTX20L-BS 18.9Ah 270A 12V

12VVoltage
18.9AhCapacity
270ACold 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 6:00 pm 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 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.

  • Reference
    BCOM-FULBAT-FTX20L-BS

Data sheet

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

Specific References

  • MPN
    FTX20L-BS

Download

Datasheet Fulbat FTX20L-BS

PDF datasheet of the Fulbat FTX20L-BS battery

Download (320.75KB)

Fulbat FTX20L-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 FTX20L-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 FTX20L-BS Fulbat FTX20L-BS This battery 12V 18.9Ah 270A AGM
Varta YTX20L-BS Varta YTX20L-BS Same size ★ 5,0 12V 18Ah 250A AGM €53.60 +€53.60

Fulbat FTX20L-BS vs Varta YTX20L-BS

Same size · +€53.60

It has the same dimensions, voltage and technology as the FTX20L-BS, although it is not a manufacturer-approved equivalent. Compared with the FTX20L-BS it has 20 A of cold cranking less. It costs €53.60 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.

FTX20L-BSYTX20L-BS
Capacity18 Ah18 Ah
Cold cranking (EN)270 A250 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155177 × 88 × 156
Positive terminalPositive rightPositive terminal on the right
Price€53.60
Varta YTX20HL-BS Varta YTX20HL-BS Same size 12V 18Ah 320A AGM €83.19 +€83.19

Fulbat FTX20L-BS vs Varta YTX20HL-BS

Same size · +€83.19

It has the same dimensions, voltage and technology as the FTX20L-BS, although it is not a manufacturer-approved equivalent. Compared with the FTX20L-BS it has 50 A of cold cranking more. It costs €83.19 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.

FTX20L-BSYTX20HL-BS
Capacity18 Ah18 Ah
Cold cranking (EN)270 A320 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155175 × 87 × 154
Positive terminalPositive rightPositive terminal on the right
Price€83.19
Exide ETX20HL-BS Exide ETX20HL-BS Same size ★ 5,0 12V 18Ah 270A AGM €56.40 +€56.40

Fulbat FTX20L-BS vs Exide ETX20HL-BS

Same size · +€56.40

Same case and same technology as the FTX20L-BS: an alternative by size, not an official equivalent. Compared with the FTX20L-BS it has the same Ah and cranking power. It costs €56.40 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.

FTX20L-BSETX20HL-BS
Capacity18 Ah18 Ah
Cold cranking (EN)270 A270 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155175 × 90 × 155
Positive terminalPositive rightPositive terminal on the right
Price€56.40
Varta YTX20HL Varta YTX20HL Same size 12V 18Ah 310A AGM €81.50 +€81.50

Fulbat FTX20L-BS vs Varta YTX20HL

Same size · +€81.50

It has the same dimensions, voltage and technology as the FTX20L-BS, although it is not a manufacturer-approved equivalent. Compared with the FTX20L-BS it has 40 A of cold cranking more. It costs €81.50 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.

FTX20L-BSYTX20HL
Capacity18 Ah18 Ah
Cold cranking (EN)270 A310 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155176 × 89 × 154
Positive terminalPositive rightPositive terminal on the right
Price€81.50
Varta YTX20L-4 Varta YTX20L-4 Same size 12V 18Ah 270A AGM €93.20 +€93.20

Fulbat FTX20L-BS vs Varta YTX20L-4

Same size · +€93.20

Same case and same technology as the FTX20L-BS: an alternative by size, not an official equivalent. Compared with the FTX20L-BS it has the same Ah and cranking power. It costs €93.20 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.

FTX20L-BSYTX20L-4
Capacity18 Ah18 Ah
Cold cranking (EN)270 A270 A
TechnologyAGMAGM
Dimensions (mm)175 × 87 × 155175 × 87 × 154
Positive terminalPositive rightPositive terminal on the right
Price€93.20
Exide AGM12-19 Exide AGM12-19 Same size 12V 18Ah 270A AGM €79.10 +€79.10

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 FTX20L-BS with a charger or tester

Frequently asked questions

Is the FTX20L-BS model AGM? What does this technology offer?

Yes. AGM (Absorbent Glass Mat) technology, 18.9 Ah and 12 V: sealed lead-acid, with the electrolyte held in glass fibre. 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 long does the Fulbat FTX20L-BS battery last?

Estimated lifespan of the Fulbat FTX20L-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 FTX20L-BS battery?

Measure your motorcycle's battery tray first; if the battery exceeds it by even a millimetre, the hold-down clamp may not close. Length × width × height: 175x87x155 mm. Height is measured to the top of the terminals.

On which side is the positive of the FTX20L-BS model?

The FTX20L-BS has the positive on the right: that is its polarity. Face the battery with its terminals nearest you and see which side the positive post (+, red ring) is on. A change of polarity from the original means longer cables or a reconfigured system and can cause a short circuit: check it before ordering.

Will the Fulbat FTX20L-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)). If our table and the motorcycle handbook disagree, go with what the manufacturer says.

What are the equivalents of the FTX20L-BS model?

Interchangeable means the same dimensions, same polarity, same Ah and same CCA; for the FTX20L-BS, 18.9 Ah (270 A cranking). The "Equivalents" section of this page gathers the recommended options with equivalent performance.

Fulbat FTX20L-BS or Varta YTX20L-BS: which one to choose?

It has the same dimensions, voltage and technology as the FTX20L-BS, although it is not a manufacturer-approved equivalent. Compared with the FTX20L-BS it has 20 A of cold cranking less. It costs €53.60 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.

Fulbat FTX20L-BS or Varta YTX20HL-BS: which one to choose?

It has the same dimensions, voltage and technology as the FTX20L-BS, although it is not a manufacturer-approved equivalent. Compared with the FTX20L-BS it has 50 A of cold cranking more. It costs €83.19 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.


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