Fulbat 12N5.5-4A · Motorcycle battery 12V 5.8Ah 55A
Specifications
| Brand | FULBAT |
|---|---|
| Part number | 12N5.5-4A |
| Voltage (V) | 12V |
| Capacity (C20) | 5.80Ah |
| Capacity (C10) | 5.50Ah (c10) |
| Technology | Lead-acid |
| Length | 135mm |
| Width | 60mm |
| Height | 130mm |
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Fulbat 12N5.5-4A 12V 5,8Ah 55A 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
5,8 Ah
Cold cranking
55 A
Dimensions
135×60×130 mm
Technology
Lead-acid
Polarity
Positive on the left
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Motorcycle battery Fulbat 12N5.5-4A 5.8Ah 55A 12V
12VVoltage
5.8AhCapacity
55ACold cranking
The Fulbat 12N5.5-4A is a motorcycle battery with 5.8 Ah and 55 A of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It measures 135 × 60 × 130 mm and the positive terminal on the left, the format sought by anyone replacing a 5.8 Ah battery in motorcycles.
- Same JIS code as the original battery: fits first time.
- Conventional lead-acid: the most proven and economical technology.
- Energetic cranking for high-compression engines.
- Resistant to the vibration typical of two wheels.
What the Fulbat 12N5.5-4A is for
The Fulbat 12N5.5-4A is a common replacement in motorcycles, scooters, quads and personal watercraft. If your bike spends the winter standing, a trickle charger stops it reaching spring flat.
Technology inside the Fulbat 12N5.5-4A
Within the Fulbat catalogue, the 12N5.5-4A is the 5.8 Ah model designed for this application.
Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.
Will it fit your current battery tray?
It has external dimensions of 135 × 60 × 130 mm. 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
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
If the bike spends the winter standing, connect a trickle charger: deep discharge through inactivity is the first cause of premature failure. On batteries with filler caps, check the electrolyte level and top up only with distilled water.
Manufacturer's warranty
The Fulbat 12N5.5-4A 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.
BCOM-FULBAT-12N5.5-4A
Data sheet
- Brand
- FULBAT
- Model
- FULBAT Motorcycle DRY
- Voltage (V)
- 12V
- Length
- 135mm
- Width
- 60mm
- Height
- 130mm
- Technology
- Lead-acid
- Terminal layout
- Positive left
- Cold cranking amps (EN)
- 55A
- Capacity (C20)
- 5.80Ah
- Capacity (C10)
- 5.50Ah (c10)
Specific References
- MPN
- 12N5.5-4A
Comparison: Fulbat 12N5.5-4A vs equivalents
The Fulbat 12N5.5-4A is interchangeable with these equivalent references: 12N5.5-4A/4B GEL (Fulbat).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Fulbat
12N5.5-4A
This battery
|
|||
Fulbat
12N5.5-4A/4B GEL
|
€41.88 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
How to change the battery
Guide to replace your motorcycle battery in 10-15 minutes. Motorcycle batteries are light (2-5 kg) and usually need an 8 mm wrench.
Step 1. Prepare the vehicle
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Step 2. Locate the battery compartment
On motorcycles it is usually under the seat, in the rear cowl or behind a side panel. Check the manual — access varies a lot between models.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Loosen the hold-down clamp or the straps that secure it. Lift the battery carefully — typical weight 2-5 kg. Check the terminals are not corroded before fitting the new one.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify the engine starts
Close the bonnet. Start the engine to confirm everything works. On cars with Start-Stop or a BMS, you may need to register the battery via OBD so the alternator applies the correct charging profile.
Frequently asked questions
How is the Fulbat 12N5.5-4A battery installed in the vehicle?
In most motorcycles it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On motorcycles with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
What is the service life of the 12N5.5-4A model?
Expected lifespan of the Fulbat 12N5.5-4A is 4 to 7 years in regular use (depends on technology and climate). 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 12N5.5-4A battery?
Dimensions (length × width × height) are 135×60×130 mm — also written as 135x60x130 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.
Does this 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 12N5.5-4A typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the 12N5.5-4A model?
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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