# Motorcycle battery Fulbat FT4B-BS GEL 12V 2.4Ah 40A GEL ![Motorcycle battery Fulbat FT4B-BS GEL 12V 2.4Ah 40A GEL](https://baterias.com/6215-home_default/battery-fulbat-ft4b-bs-gel-12v-2-4ah-40a.jpg) > Fulbat FT4B-BS GEL motorcycle battery 12V 2.4Ah 40A GEL. Motorcycle GEL range. Dimensions 113×38×85 mm. 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-ft4b-bs-gel-12v-2-4ah-40a - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FT4B-BS GEL - **MPN**: FT4B-BS GEL - **Price**: 28,07 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT Motorcycle GEL | | Voltage (V) | 12 V | | Largo | 113 mm | | Ancho | 38 mm | | Alto | 85 mm | | Tecnología | GEL | | Cold cranking amps (EN) | 40 A | | Capacity (C20) | 2.4 Ah | | Capacity (C10) | 2.3 Ah (c10) | ## Quick description **Fulbat FT4B-BS GEL 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 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 12 V ⚡ Capacity 2,4 Ah C20 🔋 Cold cranking 40 A EN-1 📏 Dimensions 113×38×85 mm ⚙️ Technology GEL ## Description ## Motorcycle battery Fulbat FT4B-BS 2.4Ah 40A 12V 12*V* Voltage 2.4*Ah* Capacity 40*A* Cold cranking With **2.4 Ah** at **12 V** and **40 A** of cold cranking current (EN), the **Fulbat FT4B-BS** with GEL 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. - GEL: excellent resistance to deep discharge and long cycle life. - Compact and lightweight format. - Holds its charge through winter storage. ### What the Fulbat FT4B-BS is for The Fulbat FT4B-BS 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 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. ### Technology inside the Fulbat FT4B-BS The FT4B-BS 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. 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. ### 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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### 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. ### 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. ### Delivery times and returns 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 is the Fulbat FT4B-BS GEL 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 FT4B-BS GEL model? Expected lifespan of the Fulbat FT4B-BS 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 dimensions of the Fulbat FT4B-BS GEL battery? 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 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 FT4B-BS GEL typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Fulbat FT4B-BS GEL? 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 · 2026-10-01*