# Lawnmower battery Fulbat U1-9 SLA 12V 28Ah 300A AGM ![Lawnmower battery Fulbat U1-9 SLA 12V 28Ah 300A AGM](https://baterias.com/6166-home_default/battery-fulbat-u1-9-sla-12v-28ah-300a.jpg) > Fulbat U1-9 SLA lawnmower battery 12V 28Ah 300A AGM. Lawn & Garden SLA range. Dimensions 195×125×176 mm, + terminal on the left. 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-u1-9-sla-12v-28ah-300a - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-U1-9 SLA - **MPN**: U1-9 SLA - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT Lawn & Garden SLA | | Voltage (V) | 12 V | | Largo | 195 mm | | Ancho | 125 mm | | Alto | 176 mm | | Tecnología | AGM | | Terminal layout | Positive left | | Cold cranking amps (EN) | 300 A | | Capacity (C20) | 28 Ah | ## Quick description **Fulbat U1-9 SLA 12V 28Ah 300A** 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 12 V ⚡ Capacity 28 Ah C20 🔋 Cold cranking 300 A EN-1 📏 Dimensions 195×125×176 mm ⚙️ Technology AGM 🧭 Polarity Positive on the left 🏷️ Model FULBAT Lawn & Garden SLA #️⃣ Mfr. reference U1-9 SLA ## Description ## Lawn mower battery Fulbat U1-9 SLA 28Ah 300A 12V 12*V* Voltage 28*Ah* Capacity 300*A* Cold cranking With **28 Ah** and **300 A** of cold cranking current (EN), the **Fulbat U1-9 SLA** starts ride-on mowers, tillers and garden machinery after months of storage. Measuring 195 × 125 × 176 mm and the positive terminal on the left, it is the direct replacement for ride-on mowers fitted from the factory with a 28 Ah battery of this format. - AGM: faster recharging and better cycle resistance than a conventional battery. - Resistant to garden-engine vibration. - Sealed and maintenance-free. - Direct replacement for the original battery. ### What the Fulbat U1-9 SLA is for Designed for ride-on mowers, tillers and garden machinery, the Fulbat U1-9 SLA is a compact, maintenance-free replacement. ### Size, terminals and hold-down of the Fulbat U1-9 SLA In terms of format, the Fulbat U1-9 SLA measures 195 × 125 × 176 mm (length × width × height). The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. 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 U1-9 SLA Fulbat builds the U1-9 SLA to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### Fulbat: the maker behind the U1-9 SLA 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. ### Manufacturer's warranty The Fulbat U1-9 SLA 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. ### How to make it last longer Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Check the voltage before the first start of the season and clean the terminals. ### Delivery times and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### How do I fit the U1-9 SLA model in my truck? 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 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 trucks with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How long does the Fulbat U1-9 SLA battery last? Expected lifespan of the Fulbat U1-9 SLA 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 U1-9 SLA model? Dimensions (length × width × height) are 195×125×176 mm — also written as 195x125x176 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. ### Is the U1-9 SLA 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 U1-9 SLA typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Fulbat U1-9 SLA? 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 — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-22*