Fulbat FT4B-BS Motorcycle MF · Battery 2.4Ah 40A AGM
Motorcycle battery Fulbat FT4B-BS 12V 2.4Ah 40A AGM images
Specifications
| Brand | FULBAT |
|---|---|
| Part number | FT4B-BS |
| Voltage (V) | 12V |
| Capacity (C20) | 2.40Ah |
| Capacity (C10) | 2.30Ah (c10) |
| Cold cranking amps (EN) | 40A |
| Technology | AGM |
| Length | 113mm |
| Width | 38mm |
This product is priced on demand to offer you the best available price at all times.
Please contact us to request a quote and we will inform you about availability and the best price on the entire website, as well as the delivery time.
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Fulbat FT4B-BS 12V 2,4Ah 40A 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
Where it fits: the Fulbat FT4B-BS is one of our motorcycle batteries, belongs to our Fulbat batteries and by capacity it sits among our 2Ah batteries.
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Motorcycle battery Fulbat FT4B-BS 2.4Ah 40A 12V
With 2.4 Ah at 12 V and 40 A of cold cranking current (EN), the Fulbat FT4B-BS with AGM technology replaces the original battery of motorcycles, scooters, quads and personal watercraft. Its 113 × 38 × 85 mm make it the exact replacement for the 2.4 Ah battery fitted as standard to many motorcycles.
- Sealed and ready to fit, no acid handling.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Compact and lightweight format.
- Holds its charge through winter storage.
What the Fulbat FT4B-BS is for
With 2.4 Ah, the Fulbat FT4B-BS 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.
Technology inside the Fulbat FT4B-BS
Fulbat builds the FT4B-BS to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.
Dimensions, polarity and mounting
It has external dimensions of 113 × 38 × 85 mm. 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.
Fulbat: the maker behind the FT4B-BS
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. We guarantee that every Fulbat arrives new, charged and with the manufacturer's full warranty.
Care and maintenance
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.
Warranty and coverage
The Fulbat FT4B-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.
Shipping, delivery and returns
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.
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ReferenceBCOM-FULBAT-FT4B-BS
Data sheet
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BrandFULBAT
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ModelFULBAT Motorcycle MF
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Voltage (V)12V
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Length113mm
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Width38mm
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Height85mm
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TechnologyAGM
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Cold cranking amps (EN)40A
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Capacity (C20)2.40Ah
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Capacity (C10)2.30Ah (c10)
Specific References
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MPNFT4B-BS
Fulbat FT4B-BS: alternatives with the same dimensions
Batteries from our catalogue with the same dimensions, voltage and technology as the Fulbat FT4B-BS and a similar capacity, sorted by sales. They are not manufacturer-approved equivalents: check the polarity and capacity of your original battery.
| Product | Specifications | Technology | Price | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Fulbat
FT4B-BS
This battery
|
12V 2.4Ah 40A | AGM | ||||||||||||||||||||||
Exide
ET4B-BS
Same size |
12V 2Ah 35A | AGM | €17.20 +€17.20 | |||||||||||||||||||||
| ||||||||||||||||||||||||
| FT4B-BS | ET4B-BS | |
|---|---|---|
| Capacity | 2 Ah | 2 Ah |
| Cold cranking (EN) | 40 A | 35 A |
| Technology | AGM | AGM |
| Dimensions (mm) | 113 × 38 × 85 | 115 × 40 × 85 |
| Positive terminal | — | Positive terminal on the right |
| Price | €17.20 |
Automatic selection by dimensions (±3 mm), voltage, technology and capacity (−10 % / +20 %). Official manufacturer warranty on every option.
Other 2Ah batteries: We stock 24 models of 2 Ah to compare by price, technology and cold cranking: see all 2Ah batteries.
Recommended accessories
Frequently asked questions
Is the Fulbat FT4B-BS an AGM battery and what are the benefits of AGM?
Yes. The FT4B-BS from Fulbat uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for motorcycles with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
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 2.4 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 AGM, it is sealed and nothing needs topping up. Just keep it charged if the bike stands for a long time.
What is the service life of the FT4B-BS model?
Expected lifespan of the Fulbat FT4B-BS 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 measurements of the FT4B-BS model?
Dimensions (length × width × height) are 113×38×85 mm — also written as 113x38x85 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.
Will the Fulbat FT4B-BS 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 16:30–18:00 (Spanish time, CET)). The FT4B-BS typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the FT4B-BS 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.
Fulbat FT4B-BS or Exide ET4B-BS: which one to choose?
It has the same dimensions, voltage and technology as the FT4B-BS, although it is not a manufacturer-approved equivalent. Compared with the FT4B-BS it has 5 A of cold cranking less. It costs €17.20 more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.
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