# Motorcycle battery Fulbat 6N4B-2A 6V 4.2Ah 35A ![Motorcycle battery Fulbat 6N4B-2A 6V 4.2Ah 35A](https://baterias.com/6061-home_default/battery-fulbat-6n4b-2a-6v-4-2ah-35a.jpg) > Fulbat 6N4B-2A motorcycle battery 6V 4.2Ah 35A. Motorcycle DRY range. Dimensions 102×48×96 mm, + terminal on the left. Verified OEM fitment. **Category:** [Motorcycle Batteries](https://baterias.com/gb/motorcycle-batteries) → [FULBAT](https://baterias.com/gb/fulbat) - **Canonical URL**: https://baterias.com/gb/battery-fulbat-6n4b-2a-6v-4-2ah-35a - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-6N4B-2A - **MPN**: 6N4B-2A - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT Motorcycle DRY | | Voltage (V) | 6 V | | Largo | 102 mm | | Ancho | 48 mm | | Alto | 96 mm | | Tecnología | Lead-acid | | Terminal layout | Positive left | | Cold cranking amps (EN) | 35 A | | Capacity (C20) | 4.2 Ah | | Capacity (C10) | 4 Ah (c10) | ## Quick description **Fulbat 6N4B-2A 6V 4,2Ah 35A** 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 reference** as your bike's original — fits first time - **Sealed and ready to use** no acid handling, no refills - **Survives winter storage** holds charge through long off-season 🔌 Voltage 6 V ⚡ Capacity 4,2 Ah C20 🔋 Cold cranking 35 A EN-1 📏 Dimensions 102×48×96 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the left ## Description ## Motorcycle battery Fulbat 6N4B-2A 4.2Ah 35A 6V 6*V* Voltage 4.2*Ah* Capacity 35*A* Cold cranking The **Fulbat 6N4B-2A** is a motorcycle battery with **4.2 Ah** and **35 A** of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. Measuring 102 × 48 × 96 mm and the positive terminal on the left, it is the direct replacement for motorcycles fitted from the factory with a 4.2 Ah battery of this format. - Good balance of capacity, cranking power and price. - Sealed and ready to fit, no acid handling. - Holds its charge through winter storage. - Compact and lightweight format. ### What the Fulbat 6N4B-2A is for Designed for motorcycles, scooters, quads and personal watercraft, the Fulbat 6N4B-2A replaces the original battery of bikes that use this code or format. Check the position of the positive terminal before ordering. ### Dimensions, polarity and mounting The Fulbat 6N4B-2A is made in the 102 × 48 × 96 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. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### Fulbat: the maker behind the 6N4B-2A 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 6N4B-2A Within the Fulbat catalogue, the 6N4B-2A is the 4.2 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. ### Care and maintenance Check the resting voltage before the season (above 12.6 V on a charged battery) and make sure the terminals are clean and tight. On batteries with filler caps, check the electrolyte level and top up only with distilled water. ### Warranty and coverage The Fulbat 6N4B-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. ### Shipping, delivery and returns Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] 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. ## Frequently asked questions ### How is the Fulbat 6N4B-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. ### What is the service life of the 6N4B-2A model? Expected lifespan of the Fulbat 6N4B-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 measurements of the 6N4B-2A model? Dimensions (length × width × height) are 102×48×96 mm — also written as 102x48x96 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 6N4B-2A typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Fulbat 6N4B-2A? 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. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-09-28*