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

Specifications

BrandFULBAT
Part numberFTX20-BS GEL
Voltage (V)12V
Capacity (C20)18.90Ah
Capacity (C10)18Ah (c10)
Cold cranking amps (EN)270A
TechnologyGEL
Length175mm
Width87mm
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Price: €111.39
VAT included
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Brand: Fulbat batteries Part number: FTX20-BS GEL

Fulbat FTX20-BS GEL 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
GEL
Polarity
Positive on the left

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

Logo Fulbat

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. Its 175 × 87 × 155 mm and the positive terminal on the left make it the exact replacement for the 18.9 Ah battery fitted as standard to many motorcycles.

  • Sealed and ready to fit, no acid handling.
  • GEL: excellent resistance to deep discharge and long cycle life.
  • Compact and lightweight format.
  • Holds its charge through winter storage.

What the Fulbat FTX20-BS is for

Designed for motorcycles, scooters, quads and personal watercraft, the Fulbat FTX20-BS replaces the original battery of bikes that use this code or format. Check the position of the positive terminal before ordering.

Dimensions, polarity and mounting

In terms of format, the Fulbat FTX20-BS measures 175 × 87 × 155 mm (length × width × height). 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. 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.

Why choose Fulbat batteries

Fulbat has manufactured in France since 1978 and specialises in motorcycles and light vehicles. Its catalogue is short and clear, covers almost the whole fleet and works only with sealed, leak-free batteries. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

Technology inside the Fulbat FTX20-BS

The FTX20-BS is one of the Fulbat references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue.

GEL technology fixes the acid in a solid gel. That removes maintenance and leaks and gives very long cycle life, in exchange for slightly slower recharging and lower peak current than an AGM.

Usage and maintenance tips

GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte. If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure.

Official 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

Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

  • Reference
    BCOM-FULBAT-FTX20-BS GEL

Data sheet

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

Specific References

  • MPN
    FTX20-BS GEL

Download

Datasheet Fulbat FTX20-BS GEL

PDF datasheet of the Fulbat FTX20-BS GEL battery

Download (339.43KB)

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 GEL with a charger or tester

Frequently asked questions

Is the Fulbat FTX20-BS GEL a GEL battery? What is GEL used for?

Yes, this model is a GEL battery: sealed lead-acid where the electrolyte is in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Requires a GEL-specific smart charger — max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years.

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 GEL, 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 FTX20-BS GEL battery last?

Expected lifespan of the Fulbat FTX20-BS GEL is 4 to 6 years, keeping it charged when the bike is not in use. 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 FTX20-BS GEL 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.

Which side is the positive terminal on this battery?

Polarity: positive on the left. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.

Will the Fulbat FTX20-BS GEL 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 FTX20-BS GEL typically fits a wide range of European vehicles thanks to its standard DIN case format.

Which batteries are equivalent to the Fulbat FTX20-BS GEL?

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.


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