# Lawnmower battery Fulbat FL-ST02 25.2V 13.8Ah Li-Ion ![Lawnmower battery Fulbat FL-ST02 25.2V 13.8Ah Li-Ion](https://baterias.com/6271-home_default/battery-fulbat-fl-st02-25-2v-13-8ah.jpg) > Fulbat FL-ST02 lawnmower battery 25.2V 13.8Ah Li-Ion. Robot Mower range. Dimensions 302Γ—156Γ—41 mm. For garden machinery. **Category:** [Fulbat batteries](https://baterias.com/gb/batteries-fulbat) β†’ [FULBAT](https://baterias.com/gb/fulbat) - **Canonical URL**: https://baterias.com/gb/battery-fulbat-fl-st02-25-2v-13-8ah - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FL-ST02 - **MPN**: FL-ST02 - **Stock**: Out of stock ## Quick description **Fulbat FL-ST02 25V 13Ah** is a compact garden battery: strong cranking reserve and good tolerance to long idle periods between seasons. ### Why this lawnmower battery? - **Same JIS reference** as your bike's original β€” fits first time - **Sealed and ready to use** no acid handling, no refills - **Survives winter storage** holds charge through long off-season πŸ”Œ Voltage 25 V ⚑ Capacity 13 Ah C20 πŸ“ Dimensions 302Γ—156Γ—41 mm βš™οΈ Technology Litio (LiFePO4) 🏷️ Model FULBAT Robot Mower #️⃣ Mfr. reference FL-ST02 ## Description ## Battery FULBAT FL-ST02 13.80Ah 347.76Wh 25.2V Robot Mower ### The brand Fulbat has manufactured in France since 1978 and its ground is motorcycles and light vehicles. Two traits define it: it covers most of the car park with a short, clear range and works only with sealed, non-spillable batteries. In practice, choosing Fulbat for motorcycles and light vehicles means going with a maker that has spent 48 years building this exact kind of battery, to the naming and the dimensions the trade takes as standard. ### The range It belongs to the Robot Mower range, aimed at your equipment. In build terms, lithium iron phosphate chemistry with built-in battery management. ### This model It delivers 13.80Ah in a 302Γ—156Γ—41 mm case. ### Technical data Brand FULBAT Model Robot Mower Part no. FL-ST02 Capacity 13.80Ah Voltage 25.20V Technology Li-Ion Dimensions (mm) 302x156x41 ## Frequently asked questions ### How do I check that the Fulbat FL-ST02 battery fits my vehicle? Three ways: 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 for the FL-ST02; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year β€” we reply during business hours (Mon–Fri 9:00–18:00 CET). ### How do I change this battery step by step? In most cars 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How many years of warranty does the FL-ST02 model cover? This battery includes 2 years of official manufacturer warranty against manufacturing defects. Coverage includes cell breakdowns, internal short-circuits and abnormal capacity decreases. It does NOT cover misuse (prolonged overcharging, inadequate charger, defective alternator). If the battery fails, we replace it at no cost after a technical inspection. ### How long does Fulbat FL-ST02 delivery take? In mainland Spain and Portugal it arrives in 24 h if you order before 17:00 and the battery is in stock β€” it leaves the same day and arrives the next business day. Afternoon or weekend orders ship the next business day. For Balearics, Canaries and other EU destinations, allow 2-5 days. Shipping cost is calculated in the cart based on destination and service (standard, express, cash on delivery). Tracking number is sent by email + SMS as soon as the parcel ships. ### Can I return the Fulbat FL-ST02 battery if it doesn't fit or doesn't work? Yes. You have 14 days from delivery to return it. In mainland Spain and Portugal returns are FREE β€” we cover the return shipping cost via prepaid label. In other EU countries the return shipping cost is the customer's. It must arrive in its original packaging with no signs of installation. If it was defective, the warranty covers replacement even after the 14-day period. ### Where can I buy the Fulbat FL-ST02 battery? At baterias.com β€” authorised distributor with real stock, 24h delivery in mainland Spain and Portugal if you order before 17:00, and full manufacturer warranty. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). Secure payment by card, Bizum, PayPal or bank transfer. If you choose at-home installation, our technician will take the used battery and dispose of it through an authorised collection point. ### What is the service life of the FL-ST02 model? Expected lifespan of the Fulbat FL-ST02 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 FL-ST02 battery? Dimensions (length Γ— width Γ— height) are 302Γ—157Γ—41 mm β€” also written as 302x157x41 mm β€” following the European DIN standard. Always measure the space in your car before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### What are the equivalents of the FL-ST02 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 β€” an EFB cannot be replaced with a conventional battery in Start-Stop cars. See the "Equivalents" section to view recommended options at the same performance level. ### Is the FL-ST02 model better than its equivalents from other brands? This battery and its equivalents from Bosch, Tudor or Exide are technically comparable: same dimensions, same voltage and same capacity. The differences are warranty (Varta and Bosch: 2 years; Tudor and Exide: 2 years on the equivalent line), manufacturing plant (Varta and Bosch share origin in the Clarios Group; Tudor and Exide belong to Exide Technologies) and price. For private use any of these brands will give 4-6 years of life. Compare them in the "Equivalents" section. ### What reviews does the FL-ST02 model have? The product rating, when available, is shown on the product page next to the stars. You can also check our public Trustpilot profile at shop level (4.5/5 from 11,626+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped cars that need OBD registration after fitting. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-09-16*