Fulbat FL-RM03 Robot Mower · Battery 25.6V 6.6Ah LiFePO4
Specifications
| Brand | FULBAT |
|---|---|
| Part number | FL-RM03 |
| Voltage (V) | 25.60V |
| Capacity (C20) | 6.60Ah |
| Technology | LiFePO4 |
| Length | 216mm |
| Width | 56mm |
| Height | 79mm |
| Model | FULBAT Robot Mower |
This product is priced on demand to offer you the best available price at all times.
Please contact us to request a quote and we will inform you about availability and the best price on the entire website, as well as the delivery time.
Thank you
Fulbat FL-RM03 25V 6Ah is a compact garden battery: strong cranking reserve and good tolerance to long idle periods between seasons.
Why this lawnmower battery?
- Same JIS referenceas your bike's original — fits first time
- Sealed and ready to useno acid handling, no refills
- Survives winter storageholds charge through long off-season
Where it fits: the Fulbat FL-RM03 is one of our lawnmower batteries, belongs to our Fulbat batteries and by capacity it sits among our 6Ah batteries.
Request a quote for your Lawnmower battery Fulbat FL-RM03 25.6V 6.6Ah LiFePO4
- Reply in under 24 working hours
- Best price guaranteed

Lawn mower battery Fulbat FL-RM03 6.6Ah 25.6V
With 6.6 Ah, the Fulbat FL-RM03 starts ride-on mowers, tillers and garden machinery after months of storage. It replaces the original battery without adaptation in ride-on mowers with a 216 × 56 × 79 mm format: same 6.6 Ah capacity.
- LiFePO4 lithium: minimal weight and almost zero self-discharge.
- Reliable starting after months of winter storage.
- Compact format for small trays.
- Good tolerance to self-discharge.
What the Fulbat FL-RM03 is for
The Fulbat FL-RM03 is designed for ride-on mowers, tillers and garden machinery. After winter, a full charge before the first start avoids surprises.
Will it fit your current battery tray?
It has external dimensions of 216 × 56 × 79 mm. 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 FL-RM03
Fulbat builds the FL-RM03 to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
LiFePO4 chemistry is the safest of the lithium batteries: thermally stable, cobalt-free and good for thousands of cycles, protected by its electronic management system.
What Fulbat does differently
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 FL-RM03 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
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.
Delivery times and returns
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 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.
Other 6Ah batteries: We stock 24 models of 6 Ah to compare by price, technology and cold cranking: see all 6Ah batteries.
Recommended accessories
Frequently asked questions
What is the service life of the FL-RM03 model?
There is no exact figure: for a battery such as the Fulbat FL-RM03 (LiFePO4), a reasonable guide is 8 to 10 years in lorry use. Many factors play a part: how it is used (lots of short trips, for example), temperature (cold makes every start harder and intense heat evaporates the electrolyte), the condition of the alternator and charging system, power drawn with the engine off and maintenance, as well as the type of truck and whether it has Start-Stop.
What are the measurements of the FL-RM03 model?
Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. It measures 216×56×79 mm in length × width × height, with the terminals included in the height.
Is the FL-RM03 valid for my vehicle?
For your own vehicle: type your number plate into the finder (DGT/DVLA/KBA identify model and engine), check the "Compatible vehicles" tab below, listing vehicles verified by our technical team, or message us on WhatsApp with make, model, engine and year; we reply during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). In every case, the truck manufacturer's specifications (owner's handbook) take precedence.
What are the equivalents of the FL-RM03 model?
A battery interchangeable with the Fulbat FL-RM03 must match it on dimensions (216×56×79 mm), polarity, capacity (6.6 Ah) and cranking current. The "Equivalents" section of this page gathers the recommended options with equivalent performance; remember that in Start-Stop trucks an EFB should not be replaced with a conventional battery.
The top-rated online battery store in Spain
-
Audited by Trustpilot, no filters, no edits. The top-rated battery store in Spain.
Trustpilot · verified, no filters
-
Official Varta distributor
Official Varta wholesale distributor. 100% genuine batteries, recently manufactured, best price and no middlemen.
World’s best-selling battery brand
-
+100,000 satisfied customers
More than 100,000 customers already trust baterias.com — and recommend us to their friends and family.
They trust us and recommend us
Choose trust, choose quality, choose baterias.com.