Fullriver FT265 Full Throttle Series · Battery 18Ah 265A AGM
Specifications
| Brand | FULLRIVER |
|---|---|
| Part number | FT265 |
| Voltage (V) | 12 |
| Capacity (C20) | 18 |
| Cold cranking amps (EN) | 265 |
| Technology | AGM |
| Length | 170 mm |
| Width | 99 mm |
| Height | 175 mm |
Fullriver FT265 12V 18Ah 265A is a marine battery, vibration- and deep-discharge resistant, suitable both for outboard engine starting and for onboard auxiliary services (navigation lights, GPS, sonar, fridge). Sealed and maintenance-free.
Why this marine battery?
- Marine designbuilt for boat swell and vibration
- Dual functionstarts the engine and powers onboard services
- Sealed and safemaintenance-free even when the boat rolls
Where it fits: the Fullriver FT265 is one of our boat batteries, belongs to our Fullriver batteries and by capacity it sits among our 18Ah batteries.
The Fullriver FT265 in practice
FT265 vs Fullriver FT200L
The Fullriver FT265 offers 18 Ah and 265 A cold cranking in a 170 × 99 × 175 mm case. The Fullriver FT200L, same brand and technology, stays at 14 Ah and 200 A and costs €19.75 less. If your car originally had the smaller capacity, this one gives extra reserve in the same case.

Marine battery Fullriver FT265 Full Throttle Series 18Ah 265A 12V
With 18 Ah at 12 V and 265 A of cold cranking current (EN), the Fullriver FT265 from the Full Throttle Series range is built for motor and sailing boats, both for engine starting and onboard services. Measuring 170 × 99 × 175 mm, it is the direct replacement for boats fitted from the factory with a 18 Ah battery of this format.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Ready for starting outboard and inboard engines.
- Sealed: no spills or gases in the locker.
- Resistant to humidity and salt air.
What the Fullriver FT265 is for
The Fullriver FT265 is designed for motor and sailing boats, both for engine starting and onboard services. If it is your starter battery, run the services from a separate battery; if it is a service battery, avoid routinely discharging it beyond 50%. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 7.20 kg and M6 terminals.
The Fullriver FT265: Full Throttle Series range and AGM technology
The FT265 is part of the Fullriver Full Throttle Series range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
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.
Will it fit your current battery tray?
The Fullriver FT265 is made in the 170 × 99 × 175 mm format and weighs 7.20 kg. It uses M6 terminals, the system that anchors and connects it in the vehicle. 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.
Fullriver: the maker behind the FT265
With its own plants and a catalogue focused on high-performance AGM, Fullriver is a familiar brand in power wheelchairs, boats and photovoltaic systems that need thousands of cycles. All the Fullriver batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
How to make it last longer
At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up. As a service battery, avoid routine discharges below 50% to extend its cycle life.
Warranty and coverage
The Fullriver FT265 comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
Shipping, delivery and returns
Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 1 to 2 working days, the islands and the rest of the EU in 1 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.
Data sheet
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BrandFULLRIVER
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ReferenceFT265
-
ModelFull Throttle Series
-
Voltage (V)12
-
Length170 mm
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Width99 mm
-
Height175 mm
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Weight7.20 Kgs
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TechnologyAGM
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EAN810233030381
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Terminal typeM6
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Cold cranking amps (EN)265
-
Capacity (C20)18
-
Case typeB16CL-B
Specific References
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UPC810233030381
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MPNFT265
Other 18Ah batteries: We stock 28 models of 18 Ah to compare by price, technology and cold cranking: see all 18Ah batteries. Same size (170 × 99 × 175 mm): batteries of 170 × 99 × 175 mm.
Recommended accessories
Frequently asked questions
Is the Fullriver FT265 an AGM battery and what are the benefits of AGM?
Yes, it is AGM. In an AGM battery such as the FT265, the electrolyte is not free but absorbed in a glass-fibre mat inside a sealed lead-acid battery. Compared with a conventional battery it withstands more charge/discharge cycles and handles heat better.
In what position can it be installed on the boat?
Being AGM, it is sealed and does not spill: it can be mounted tilted (never upside down) and copes well with vibration and wave impacts. Secure it firmly and keep the terminals away from water.
What are the dimensions of the Fullriver FT265 battery?
Its dimensions are 170×99×175 mm, also written 170x99x175 mm; the height already includes the terminals. Check the room available in your boat, because a single millimetre too much can stop the clamp from closing.
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