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Fulbat FB4L-B GEL · Motorcycle battery 5.3Ah 50A GEL

Specifications

BrandFULBAT
Part numberFB4L-B GEL
Voltage (V)12V
Capacity (C20)5.30Ah
Capacity (C10)5Ah (c10)
Cold cranking amps (EN)50A
TechnologyGEL
Length120mm
Width70mm
See the full specifications →
Price: €31.36
VAT included
Quantity

Brand: Fulbat batteries Part number: FB4L-B GEL

Fulbat FB4L-B GEL 12V 5,3Ah 50A 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
5,3 Ah C20
Cold cranking
50 A EN-1
Dimensions
120×70×92 mm
Technology
GEL
Polarity
Positive on the right

Where it fits: the Fulbat FB4L-B GEL is one of our motorcycle batteries, belongs to our Fulbat batteries and by capacity it sits among our 5Ah batteries.

The Fulbat FB4L-B GEL in practice

FB4L-B GEL vs Fulbat FTX7L-BS GEL

The Fulbat FB4L-B GEL offers 5 Ah and 50 A cold cranking in a 120 × 70 × 92 mm case. The Fulbat FTX7L-BS GEL, same brand and technology, goes up to 6 Ah and 100 A with 7 mm less length and costs €14.10 more. If the tray takes the size, extra capacity and cranking give winter margin; if not, this one is the fit.

Logo Fulbat

Motorcycle battery Fulbat FB4L-B 5.3Ah 50A 12V

12VVoltage
5.3AhCapacity
50ACold cranking

With 5.3 Ah at 12 V and 50 A of cold cranking current (EN), the Fulbat FB4L-B with GEL technology replaces the original battery of motorcycles, scooters, quads and personal watercraft. Measuring 120 × 70 × 92 mm and the positive terminal on the right, it is the direct replacement for motorcycles fitted from the factory with a 5.3 Ah battery of this format.

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

What the Fulbat FB4L-B is for

With 5.3 Ah, the Fulbat FB4L-B 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.

Will it fit your current battery tray?

In terms of format, the Fulbat FB4L-B measures 120 × 70 × 92 mm (length × width × height). 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. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

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. We guarantee that every Fulbat arrives new, charged and with the manufacturer's full warranty.

Technology inside the Fulbat FB4L-B

Fulbat builds the FB4L-B to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.

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.

Care and maintenance

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.

Manufacturer's warranty

The Fulbat FB4L-B 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.

Delivery times and returns

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-FB4L-B GEL

Data sheet

  • Brand
    FULBAT
  • Model
    FULBAT Motorcycle GEL
  • Voltage (V)
    12V
  • Length
    120mm
  • Width
    70mm
  • Height
    92mm
  • Technology
    GEL
  • Terminal layout
    Positive right
  • Cold cranking amps (EN)
    50A
  • Capacity (C20)
    5.30Ah
  • Capacity (C10)
    5Ah (c10)

Specific References

  • MPN
    FB4L-B GEL

Download

Datasheet Fulbat FB4L-B GEL

PDF datasheet of the Fulbat FB4L-B GEL battery

Download (445.1KB)

Other 5Ah batteries: We stock 23 models of 5 Ah to compare by price, technology and cold cranking: see all 5Ah batteries.

Recommended accessories — complement the Fulbat FB4L-B GEL with a charger or tester

Frequently asked questions

Is the FB4L-B GEL model a gel battery? Where is it used?

Yes. The Fulbat FB4L-B GEL is GEL: sealed lead-acid in which the electrolyte is a gel. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). It needs a GEL-specific smart charger: its maximum charge voltage is lower than that of an AGM.

How should this motorcycle battery be charged?

With a 12 V motorcycle charger delivering at most 10 % of its capacity: 0.5 A for its 5.3 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 FB4L-B GEL battery last?

As a guide, you can expect the Fulbat FB4L-B GEL to last 4 to 6 years, keeping it charged when the bike is not in use, although the real figure may be higher or lower. What weighs most: temperature (cold makes starts harder and intense heat evaporates the electrolyte), frequent short trips, the condition of the alternator and charging system, power draw while parked and maintenance.

What are the measurements of the FB4L-B GEL model?

The Fulbat FB4L-B GEL takes up 120×70×92 mm (length, width and height, terminals included). Before buying, measure the space in your motorcycle: one extra millimetre can stop the hold-down clamp from closing.

What polarity does the Fulbat FB4L-B GEL battery have?

On the Fulbat FB4L-B GEL, the polarity is positive on the right. 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). To check, stand the battery in front of you with the terminals nearest you: the positive (+) is the one with the red ring.

Is the FB4L-B GEL valid for my vehicle?

The FB4L-B GEL typically fits a wide range of European vehicles thanks to its standard DIN case format. Three routes: the "Compatible vehicles" tab on this page, with the vehicles verified by our technical team; your number plate in the finder, from which DGT/DVLA/KBA detect model and engine; and WhatsApp, with make, model, engine and year, during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). The motorcycle manufacturer's specifications always take priority over our tables.

What are the equivalents of the FB4L-B GEL model?

The "Equivalents" section further down lists the recommended alternatives. A battery interchangeable with the Fulbat FB4L-B GEL must match it on dimensions (120×70×92 mm), polarity (positive on the right), capacity (5.3 Ah) and cranking current (50 A).


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