Fullriver FT825-78 · Marine battery 65Ah 825A AGM

Marine battery Fullriver FT825-78 Full Throttle Series 65Ah 825A 12V

The Fullriver FT825-78 marine battery offers 12 V, 65 Ah and 825 A of cold cranking current (EN) from the Full Throttle Series range with AGM technology, designed for motor and sailing boats, both for engine starting and onboard services. Its 261 × 172 × 211 mm make it the exact replacement for the 65 Ah battery fitted as standard to many boats.

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

What the Fullriver FT825-78 is for

On board, the Fullriver FT825-78 provides 65 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 21.10 kg and M8 + TP29 + FR45 terminals.

Dimensions, polarity and mounting

The Fullriver FT825-78 is made in the 261 × 172 × 211 mm format and weighs 21.10 kg. It uses M8 + TP29 + FR45 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.

Why choose Fullriver batteries

Fullriver specialises in deep-cycle AGM batteries for mobility, marine, solar and traction. Its DC and HC series are known for their tolerance to deep discharge and long cycle life. We guarantee that every Fullriver arrives new, charged and with the manufacturer's full warranty.

The Fullriver FT825-78: Full Throttle Series range and AGM technology

The FT825-78 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.

In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.

Usage and maintenance tips

Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. As a service battery, avoid routine discharges below 50% to extend its cycle life.

Warranty and coverage

The Fullriver FT825-78 comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.

Delivery times and returns

Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.