Fulbat 6N4-2A · Motorcycle battery 6V 4.2Ah 25A
Specifications
| Brand | FULBAT |
|---|---|
| Part number | 6N4-2A |
| Voltage (V) | 6V |
| Capacity (C20) | 4.20Ah |
| Capacity (C10) | 4Ah (c10) |
| Technology | Lead-acid |
| Length | 71mm |
| Width | 71mm |
| Height | 96mm |
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Fulbat 6N4-2A 6V 4,2Ah 25A 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
6 V
Capacity
4,2 Ah
Cold cranking
25 A
Dimensions
71×71×96 mm
Technology
Lead-acid
Polarity
Positive on the right
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Motorcycle battery Fulbat 6N4-2A 4.2Ah 25A 6V
6VVoltage
4.2AhCapacity
25ACold cranking
The Fulbat 6N4-2A is a motorcycle battery with 4.2 Ah and 25 A of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. It measures 71 × 71 × 96 mm and the positive terminal on the right, the format sought by anyone replacing a 4.2 Ah battery in motorcycles.
- Energetic cranking for high-compression engines.
- Resistant to the vibration typical of two wheels.
- Same JIS code as the original battery: fits first time.
- Conventional lead-acid: the most proven and economical technology.
Size, terminals and hold-down of the Fulbat 6N4-2A
In terms of format, the Fulbat 6N4-2A measures 71 × 71 × 96 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. 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.
What the Fulbat 6N4-2A is for
Designed for motorcycles, scooters, quads and personal watercraft, the Fulbat 6N4-2A 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 6N4-2A
The 6N4-2A 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.
In a conventional battery the electrolyte is liquid and the lead plates are immersed in it. It is a mature, economical and easily recycled technology, ideal for starting vehicles in normal use.
Fulbat: the maker behind the 6N4-2A
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.
Warranty and coverage
The Fulbat 6N4-2A 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.
How to make it last longer
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.
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.
BCOM-FULBAT-6N4-2A
Data sheet
- Brand
- FULBAT
- Model
- FULBAT Motorcycle DRY
- Voltage (V)
- 6V
- Length
- 71mm
- Width
- 71mm
- Height
- 96mm
- Technology
- Lead-acid
- Terminal layout
- Positive right
- Cold cranking amps (EN)
- 25A
- Capacity (C20)
- 4.20Ah
- Capacity (C10)
- 4Ah (c10)
Specific References
- MPN
- 6N4-2A
Comparison: Fulbat 6N4-2A vs equivalents
The Fulbat 6N4-2A is interchangeable with these equivalent references: 6N4-2A/A-4 GEL (Fulbat).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Fulbat
6N4-2A
This battery
|
|||
Fulbat
6N4-2A/A-4 GEL
|
€18.79 |
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 6N4-2A 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.
How long does the Fulbat 6N4-2A battery last?
Expected lifespan of the Fulbat 6N4-2A 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 6N4-2A battery?
Dimensions (length × width × height) are 71×71×96 mm — also written as 71x71x96 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.
Is the 6N4-2A valid for my vehicle?
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 6N4-2A typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the 6N4-2A 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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