Fullriver DC65-12B · Marine battery 65Ah 490A AGM
Specifications
| Brand | FULLRIVER |
|---|---|
| Part number | DC65-12B |
| Voltage (V) | 12 |
| Capacity (C20) | 65Ah (c20) |
| Capacity (C5) | 53Ah (c5) |
| Cold cranking amps (EN) | 490 |
| Technology | AGM |
| Length | 261.00 mm |
| Width | 171.50 mm |
Fullriver DC65-12B 12V 65Ah 490A is a marine battery with reinforced anti-vibration case for moorings and offshore use. Tolerates the typical daily cycles on a boat (engine start + night-time services such as lights, sonar, fridge) and holds voltage even when the hull is rolling in open sea.
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 DC65-12B is one of our boat batteries, belongs to our Fullriver batteries and by capacity it sits among our 65Ah batteries.
The Fullriver DC65-12B in practice
DC65-12B vs Fullriver FT840-24M
The Fullriver DC65-12B offers 65 Ah and 490 A cold cranking in a 261 × 172 × 187 mm case. The Fullriver FT840-24M, same brand and technology, goes up to 75 Ah and 840 A with 15 mm more length and costs €339.80 more. The difference shows on diesels and in hard winters; for a daily-driven petrol car the extra is not needed.

Marine battery Fullriver DC65-12B DC 65Ah 490A 12V
With 65 Ah at 12 V and 490 A of cold cranking current (EN), the Fullriver DC65-12B from the DC range is built for motor and sailing boats, both for engine starting and onboard services. It replaces the original battery without adaptation in boats with a 261 × 171 × 186 mm format: same 65 Ah capacity.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Reinforced case against vibration and swell.
- Powers onboard services: lights, sounder, GPS, fridge.
- Tolerates the daily cycling of a boat in season.
What the Fullriver DC65-12B is for
The Fullriver DC65-12B 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 21.30 kg and M8 terminals.
The Fullriver DC65-12B: DC range and AGM technology
The DC is the Fullriver range the DC65-12B belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle.
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.
Dimensions, polarity and mounting
It has external dimensions of 261 × 171 × 186 mm and weighs 21.30 kg. It uses M8 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 DC65-12B
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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official 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. Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections.
Official warranty
The Fullriver DC65-12B comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
When you get it and how to return it
Order before 6:00 pm 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 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
-
ReferenceDC65-12B
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ModelFULLRIVER DC
-
Voltage (V)12
-
Length261.00 mm
-
Width171.50 mm
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Height186.50 mm
-
Weight21.30 Kgs
-
TechnologyAGM
-
Terminal typeM8
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Cold cranking amps (EN)490
-
Capacity (C20)65Ah (c20)
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Capacity (C5)53Ah (c5)
Specific References
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MPNDC65-12B
Other 65Ah batteries: We stock 22 models of 65 Ah to compare by price, technology and cold cranking: see all 65Ah batteries. Same size (261 × 172 × 187 mm): batteries of 261 × 172 × 187 mm.
Recommended accessories
Frequently asked questions
Is the DC65-12B model AGM? What does this technology offer?
Yes: the DC65-12B from Fullriver uses AGM (Absorbent Glass Mat) technology, a sealed lead-acid battery whose electrolyte soaks a glass-fibre mat. 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 DC65-12B battery?
The Fullriver DC65-12B takes up 261×172×187 mm (length, width and height, terminals included). Before buying, measure the space in your boat: one extra millimetre can stop the hold-down clamp from closing.
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