# Lawnmower battery Fulbat FL-WX03 28V 2.5Ah Li-Ion ![Lawnmower battery Fulbat FL-WX03 28V 2.5Ah Li-Ion](https://baterias.com/6288-home_default/battery-fulbat-fl-wx03-28v-2-5ah.jpg) > Fulbat FL-WX03 lawnmower battery 28V 2.5Ah Li-Ion. Robot Mower range. Dimensions 103×48×72 mm. For garden machinery. **Category:** [Lawnmower Batteries](https://baterias.com/gb/lawnmower-batteries) → [FULBAT](https://baterias.com/gb/fulbat) - **Canonical URL**: https://baterias.com/gb/battery-fulbat-fl-wx03-28v-2-5ah - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FL-WX03 - **MPN**: FL-WX03 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT Robot Mower | | Voltage (V) | 28 V | | Largo | 103.7 mm | | Ancho | 48.8 mm | | Alto | 72.1 mm | | Tecnología | Li-Ion | | Capacity (C20) | 2.5 Ah | | Energy (Wh) | 70 Wh | ## Quick description **Fulbat FL-WX03 28V 2Ah** is a starter battery for lawnmowers and garden machinery, sized to crank reliably after months of storage. ### Why this lawnmower 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 28 V ⚡ Capacity 2 Ah C20 📏 Dimensions 103×48×72 mm ⚙️ Technology LI-ION 🏷️ Model FULBAT Robot Mower #️⃣ Mfr. reference FL-WX03 ## Description ## Lawn mower battery Fulbat FL-WX03 2.5Ah 28V 28*V* Voltage 2.5*Ah* Capacity The **Fulbat FL-WX03** delivers **2.5 Ah** at **28 V** for ride-on mowers, tillers and garden machinery. It measures 103 × 48 × 72 mm, the format sought by anyone replacing a 2.5 Ah battery in ride-on mowers. - Compact format for small trays. - Good tolerance to self-discharge. - Reliable starting after months of winter storage. - Direct replacement for the original battery. ### What the Fulbat FL-WX03 is for With 2.5 Ah, the Fulbat FL-WX03 starts ride-on mowers, tillers and garden machinery and copes with garden-engine vibration. ### Size, terminals and hold-down of the Fulbat FL-WX03 In terms of format, the Fulbat FL-WX03 measures 103 × 48 × 72 mm (length × width × height). Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### Technology inside the Fulbat FL-WX03 Within the Fulbat catalogue, the FL-WX03 is the 2.5 Ah model designed for this application. ### Fulbat: the maker behind the FL-WX03 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. We guarantee that every Fulbat arrives new, charged and with the manufacturer's full warranty. ### Warranty and coverage The Fulbat FL-WX03 comes with the **manufacturer's official warranty** against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you. ### Usage and maintenance tips Check the voltage before the first start of the season and clean the terminals. Disconnect or remove the battery over winter and give it a maintenance charge before storing it. ### When you get it and how to return it 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 do I change this battery step by step? In most trucks 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 trucks with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How many years does this battery last? Expected lifespan of the Fulbat FL-WX03 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 FL-WX03 model? Dimensions (length × width × height) are 104×49×72 mm — also written as 104x49x72 mm — following the European DIN standard. Always measure the space in your truck before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### Will the Fulbat FL-WX03 battery fit my truck? 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 FL-WX03 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 trucks. 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*