# Motorcycle battery Fulbat FTX5L-BS 12V 4.2Ah 80A AGM ![Motorcycle battery Fulbat FTX5L-BS 12V 4.2Ah 80A AGM](https://baterias.com/6106-home_default/battery-fulbat-ftx5l-bs-12v-4-2ah-80a.jpg) > Fulbat FTX5L-BS motorcycle battery 12V 4.2Ah 80A AGM. Motorcycle MF range. Dimensions 113×70×105 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-ftx5l-bs-12v-4-2ah-80a - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FTX5L-BS - **MPN**: FTX5L-BS - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT Motorcycle MF | | Voltage (V) | 12 V | | Largo | 113 mm | | Ancho | 70 mm | | Alto | 105 mm | | Tecnología | AGM | | Terminal layout | Positive right | | Cold cranking amps (EN) | 80 A | | Capacity (C20) | 4.2 Ah | | Capacity (C10) | 4 Ah (c10) | ## Quick description **Fulbat FTX5L-BS 12V 4,2Ah 80A** 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 4,2 Ah C20 🔋 Cold cranking 80 A EN-1 📏 Dimensions 113×70×105 mm ⚙️ Technology AGM 🧭 Polarity Positive on the right ## Description ## Motorcycle battery Fulbat FTX5L-BS 4.2Ah 80A 12V 12*V* Voltage 4.2*Ah* Capacity 80*A* Cold cranking The **Fulbat FTX5L-BS** is a motorcycle battery with **4.2 Ah** and **80 A** of cold cranking current (EN), designed for motorcycles, scooters, quads and personal watercraft. Its 113 × 70 × 105 mm and the positive terminal on the right make it the exact replacement for the 4.2 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 FTX5L-BS is for The Fulbat FTX5L-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. ### Will it fit your current battery tray? It has external dimensions of 113 × 70 × 105 mm. 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 FTX5L-BS Within the Fulbat catalogue, the FTX5L-BS is the 4.2 Ah model designed for this application. 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. ### Why choose Fulbat batteries 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. All the Fulbat batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Official warranty The Fulbat FTX5L-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 Check the resting voltage before the season (above 12.6 V on a charged battery) and make sure the terminals are clean and tight. 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. ### 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 FTX5L-BS 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 — 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 FTX5L-BS battery last? Expected lifespan of the Fulbat FTX5L-BS 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 FTX5L-BS model? Dimensions (length × width × height) are 113×70×105 mm — also written as 113x70x105 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 FTX5L-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 16:40–18:00 (Spanish time, CET)). The FTX5L-BS typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Fulbat FTX5L-BS? 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 — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-21*