# Motorcycle battery Fulbat 51814 12V 18Ah 210A ![Motorcycle battery Fulbat 51814 12V 18Ah 210A](https://baterias.com/6066-home_default/battery-fulbat-51814-12v-18ah-210a.jpg) > Fulbat 51814 motorcycle battery 12V 18Ah 210A. Motorcycle DRY range. Dimensions 186×82×171 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-51814-12v-18ah-210a - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-51814 - **MPN**: 51814 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT Motorcycle DRY | | Voltage (V) | 12 V | | Largo | 186 mm | | Ancho | 82 mm | | Alto | 171 mm | | Tecnología | Lead-acid | | Terminal layout | Positive right | | Cold cranking amps (EN) | 210 A | | Capacity (C20) | 18 Ah | ## Quick description **Fulbat 51814 12V 18Ah 210A** 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 12 V ⚡ Capacity 18 Ah C20 🔋 Cold cranking 210 A EN-1 📏 Dimensions 186×82×171 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the right ## Description ## Motorcycle battery Fulbat 51814 18Ah 210A 12V 12*V* Voltage 18*Ah* Capacity 210*A* Cold cranking With **18 Ah** at **12 V** and **210 A** of cold cranking current (EN), the **Fulbat 51814** with conventional lead-acid technology replaces the original battery of motorcycles, scooters, quads and personal watercraft. Its 186 × 82 × 171 mm and the positive terminal on the right make it the exact replacement for the 18 Ah battery fitted as standard to many motorcycles. - Sealed and ready to fit, no acid handling. - Good balance of capacity, cranking power and price. - Compact and lightweight format. - Holds its charge through winter storage. ### Dimensions, polarity and mounting In terms of format, the Fulbat 51814 measures 186 × 82 × 171 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. ### What the Fulbat 51814 is for Designed for motorcycles, scooters, quads and personal watercraft, the Fulbat 51814 replaces the original battery of bikes that use this code or format. Check the position of the positive terminal before ordering. ### Technology inside the Fulbat 51814 The 51814 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. The conventional lead-acid battery remains the most widespread technology thanks to its balance of capacity, cranking current and price. Well maintained and kept charged, it offers years of reliable service in vehicles without Start-Stop. ### Fulbat: the maker behind the 51814 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. ### Manufacturer's warranty The Fulbat 51814 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 Check the resting voltage before the season (above 12.6 V on a charged battery) and make sure the terminals are clean and tight. 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 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 51814 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. ### What is the service life of the 51814 model? Expected lifespan of the Fulbat 51814 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 51814 battery? Dimensions (length × width × height) are 186×82×171 mm — also written as 186x82x171 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. ### Is the 51814 valid for my vehicle? 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 51814 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the 51814 model? 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 · 2026-10-03*