# Motorcycle battery Fulbat 6N4-2A/A-4 GEL 6V 4.2Ah 25A GEL ![Motorcycle battery Fulbat 6N4-2A/A-4 GEL 6V 4.2Ah 25A GEL](https://baterias.com/6225-home_default/battery-fulbat-6n4-2a-a-4-gel-6v-4-2ah-25a.jpg) > Fulbat 6N4-2A/A-4 GEL motorcycle battery 6V 4.2Ah 25A GEL. Motorcycle GEL range. Dimensions 71×71×93 mm, + terminal on the right. 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-6n4-2a-a-4-gel-6v-4-2ah-25a - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-6N4-2A/A-4 GEL - **MPN**: 6N4-2A/A-4 GEL - **Price**: 18,79 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT Motorcycle GEL | | Voltage (V) | 6 V | | Largo | 71 mm | | Ancho | 71 mm | | Alto | 93 mm | | Tecnología | GEL | | Terminal layout | Positive right | | Cold cranking amps (EN) | 25 A | | Capacity (C20) | 4.2 Ah | | Capacity (C10) | 4 Ah (c10) | ## Quick description **Fulbat 6N4-2A/A-4 GEL 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 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 25 A EN-1 📏 Dimensions 71×71×93 mm ⚙️ Technology GEL 🧭 Polarity Positive on the right ## Description ## Motorcycle battery Fulbat 6N4-2A/A-4 4.2Ah 25A 6V 6*V* Voltage 4.2*Ah* Capacity 25*A* Cold cranking With **4.2 Ah** at **6 V** and **25 A** of cold cranking current (EN), the **Fulbat 6N4-2A/A-4** with GEL technology replaces the original battery of motorcycles, scooters, quads and personal watercraft. It measures 71 × 71 × 93 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. - GEL technology: gelled electrolyte, fully sealed and maintenance-free. ### What the Fulbat 6N4-2A/A-4 is for Designed for motorcycles, scooters, quads and personal watercraft, the Fulbat 6N4-2A/A-4 replaces the original battery of bikes that use this code or format. Check the position of the positive terminal before ordering. ### Will it fit your current battery tray? In terms of format, the Fulbat 6N4-2A/A-4 measures 71 × 71 × 93 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. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### Technology inside the Fulbat 6N4-2A/A-4 Within the Fulbat catalogue, the 6N4-2A/A-4 is the 4.2 Ah model designed for this application. GEL technology fixes the acid in a solid gel. That removes maintenance and leaks and gives very long cycle life, in exchange for slightly slower recharging and lower peak current than an AGM. ### What Fulbat does differently 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. ### Official warranty The Fulbat 6N4-2A/A-4 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. ### 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. Check the resting voltage before the season (above 12.6 V on a charged battery) and make sure the terminals are clean and tight. ### When you get it and how to return it Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 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 **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### How do I fit the 6N4-2A/A-4 GEL model in my motorcycle? 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/A-4 GEL battery last? Expected lifespan of the Fulbat 6N4-2A/A-4 GEL 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 6N4-2A/A-4 GEL model? Dimensions (length × width × height) are 71×71×93 mm — also written as 71x71x93 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 6N4-2A/A-4 GEL 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 6N4-2A/A-4 GEL 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. ## 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 · 2026-09-30*