Fullriver FT840-24M · Marine battery 75Ah 840A AGM

Marine battery Fullriver FT840-24M Full Throttle Series 75Ah 840A 12V

With 75 Ah at 12 V and 840 A of cold cranking current (EN), the Fullriver FT840-24M from the Full Throttle Series range is built for motor and sailing boats, both for engine starting and onboard services. Measuring 276 × 172 × 227 mm, it is the direct replacement for boats fitted from the factory with a 75 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.

Dimensions, polarity and mounting

It has external dimensions of 276 × 172 × 227 mm and weighs 24.50 kg. It uses DT terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

What the Fullriver FT840-24M is for

On board, the Fullriver FT840-24M provides 75 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 24.50 kg and DT terminals.

The Fullriver FT840-24M: Full Throttle Series range and AGM technology

The Full Throttle Series is the Fullriver range the FT840-24M 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.

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.

What Fullriver does differently

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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

Official warranty

The Fullriver FT840-24M comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.

Usage and maintenance tips

Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections.

When you get it and how to return it

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.