Fullriver DC55-12 · Marine battery 55Ah 400A AGM

Marine battery Fullriver DC55-12 DC 55Ah 400A 12V

The Fullriver DC55-12 with AGM technology is a marine battery with 55 Ah and 400 A of cold cranking current (EN) for motor and sailing boats, both for engine starting and onboard services. Measuring 229 × 138 × 212 mm, it is the direct replacement for boats fitted from the factory with a 55 Ah battery of this format.

• Sealed: no spills or gases in the locker.
• Resistant to humidity and salt air.
• AGM: faster recharging and better cycle resistance than a conventional battery.
• Ready for starting outboard and inboard engines.

Will it fit your current battery tray?

In terms of format, the Fullriver DC55-12 measures 229 × 138 × 212 mm (length × width × height) and weighs 17.60 kg. It uses M6 terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.

What the Fullriver DC55-12 is for

On board, the Fullriver DC55-12 provides 55 Ah with a case reinforced against vibration and swell. Keep the terminals clean and protected from salt humidity. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 17.60 kg and M6 terminals.

The Fullriver DC55-12: DC range and AGM technology

Within the Fullriver catalogue, the DC series groups the references designed for this use. The DC55-12 is the 55 Ah model of that family, with the same performance as its siblings in other sizes.

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.

Fullriver: the maker behind the DC55-12

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.

Warranty and coverage

The Fullriver DC55-12 comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.

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.

Shipping, delivery 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.