Fulbat B38-6A · Motorcycle battery 6V 13.7Ah 105A
Motorcycle battery Fulbat B38-6A 6V 13.7Ah 105A images
Specifications
| Brand | FULBAT |
|---|---|
| Part number | B38-6A |
| Voltage (V) | 6V |
| Capacity (C20) | 13.70Ah |
| Capacity (C10) | 13Ah (c10) |
| Cold cranking amps (EN) | 105A |
| Technology | Lead-acid |
| Length | 119mm |
| Width | 83mm |
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Fulbat B38-6A 6V 13,7Ah 105A 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
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Motorcycle battery Fulbat B38-6A 13.7Ah 105A 6V
The Fulbat B38-6A motorcycle battery is rated at 6 V, 13.7 Ah and 105 A of cold cranking current (EN), and is designed for motorcycles, scooters, quads and personal watercraft. It replaces the original battery without adaptation in motorcycles with a 119 × 83 × 161 mm format: same 13.7 Ah capacity and the positive terminal on the left.
- Conventional lead-acid: the most proven and economical technology.
- 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 B38-6A is for
The Fulbat B38-6A 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.
Dimensions, polarity and mounting
It has external dimensions of 119 × 83 × 161 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. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
Technology inside the Fulbat B38-6A
Fulbat builds the B38-6A to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
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 B38-6A
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.
Warranty and coverage
The Fulbat B38-6A 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.
Usage and maintenance tips
On batteries with filler caps, check the electrolyte level and top up only with distilled water. 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
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.
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ReferenceBCOM-FULBAT-B38-6A
Data sheet
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BrandFULBAT
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ModelFULBAT Motorcycle DRY
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Voltage (V)6V
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Length119mm
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Width83mm
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Height161mm
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TechnologyLead-acid
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Terminal layoutPositive left
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Cold cranking amps (EN)105A
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Capacity (C20)13.70Ah
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Capacity (C10)13Ah (c10)
Specific References
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MPNB38-6A
Recommended accessories
Frequently asked questions
How is the Fulbat B38-6A 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 our blog. 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 — with positive on the left 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 B38-6A battery last?
Expected lifespan of the Fulbat B38-6A is 4 to 6 years in regular motorcycle use without Start-Stop. 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 B38-6A model?
Dimensions (length × width × height) are 119×83×161 mm — also written as 119x83x161 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.
What polarity does the Fulbat B38-6A battery have?
Polarity: positive on the left. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.
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 B38-6A typically fits a wide range of European vehicles thanks to its standard DIN case format.
Which interchangeable batteries are there for this one?
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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