Fulbat 12N5.5-4A/4B GEL · Motorcycle battery 5.8Ah 70A GEL
Specifications
| Brand | FULBAT |
|---|---|
| Part number | 12N5.5-4A/4B GEL |
| Voltage (V) | 12V |
| Capacity (C20) | 5.80Ah |
| Capacity (C10) | 5.50Ah (c10) |
| Cold cranking amps (EN) | 70A |
| Technology | GEL |
| Length | 135mm |
| Width | 60mm |
Fulbat 12N5.5-4A/4B GEL 12V 5,8Ah 70A 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
Where it fits: the Fulbat 12N5.5-4A/4B GEL is one of our motorcycle batteries, belongs to our Fulbat batteries and by capacity it sits among our 5Ah batteries.

Motorcycle battery Fulbat 12N5.5-4A/4B 5.8Ah 70A 12V
The Fulbat 12N5.5-4A/4B is a motorcycle battery with 5.8 Ah and 70 A of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It replaces the original battery without adaptation in motorcycles with a 135 × 60 × 130 mm format: same 5.8 Ah capacity and the positive terminal on the left.
- GEL technology: gelled electrolyte, fully sealed and maintenance-free.
- Same JIS code as the original battery: fits first time.
- Resistant to the vibration typical of two wheels.
- Energetic cranking for high-compression engines.
What the Fulbat 12N5.5-4A/4B is for
With 5.8 Ah, the Fulbat 12N5.5-4A/4B 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?
The Fulbat 12N5.5-4A/4B is made in the 135 × 60 × 130 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. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.
What Fulbat does differently
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 12N5.5-4A/4B
Fulbat builds the 12N5.5-4A/4B 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.
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.
Warranty and coverage
The Fulbat 12N5.5-4A/4B 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
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.
Data sheet
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BrandFULBAT
-
ModelFULBAT Motorcycle GEL
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Voltage (V)12V
-
Length135mm
-
Width60mm
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Height130mm
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TechnologyGEL
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Terminal layoutPositive left
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Cold cranking amps (EN)70A
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Capacity (C20)5.80Ah
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Capacity (C10)5.50Ah (c10)
Specific References
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MPN12N5.5-4A/4B GEL
Other 5Ah batteries: We stock 23 models of 5 Ah to compare by price, technology and cold cranking: see all 5Ah batteries. Same size (135 × 60 × 130 mm): batteries of 135 × 60 × 130 mm.
Recommended accessories
Frequently asked questions
Is the 12N5.5-4A/4B GEL model a gel battery? Where is it used?
Yes: in the 12N5.5-4A/4B GEL the electrolyte is gelled. It is a sealed lead-acid GEL battery. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Charge it only with a GEL-specific smart charger; its voltage limit is below that of an AGM.
How should this motorcycle battery be charged?
With a 12 V motorcycle charger delivering at most 10 % of its capacity: 0.6 A for its 5.8 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 12N5.5-4A/4B GEL battery last?
Estimated lifespan of the Fulbat 12N5.5-4A/4B GEL: 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. It can vary considerably with usage (short or long journeys), temperature, the condition of the alternator and charging system, power drawn with the engine off and maintenance. Cold demands more at every start and intense heat evaporates the electrolyte.
What are the measurements of the 12N5.5-4A/4B GEL model?
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: 135x60x130 mm. Height is measured to the top of the terminals.
What polarity does the Fulbat 12N5.5-4A/4B GEL battery have?
The 12N5.5-4A/4B GEL has the positive on the left: that is its polarity. It must match your current battery: reversed polarity means lengthening cables or reconfiguring the system, with a risk of short circuit. Face the battery with its terminals nearest you and see which side the positive post (+, red ring) is on.
Does this battery fit my motorcycle?
Not sure? Try your number plate in the finder (DGT/DVLA/KBA detect model and engine) or the "Compatible vehicles" tab, checked by our technical team; if your motorcycle is not there, send us make, model, engine and year on WhatsApp and we will 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 12N5.5-4A/4B GEL model?
A direct equivalent needs what this 12N5.5-4A/4B GEL offers: 135×60×130 mm, positive on the left, the same Ah and CCA and GEL technology. The "Equivalents" section further down lists the recommended alternatives.
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