# Marine battery Fullriver FFD35-12 12V 35Ah 225A AGM ![Marine battery Fullriver FFD35-12 12V 35Ah 225A AGM](https://baterias.com/3187-home_default/battery-fullriver-ffd35-12-12v-35ah-225a.jpg) > Fullriver FFD35-12 marine battery 12V 35Ah 225A AGM. FF range. Dimensions 196×131×167 mm. Cranking and house duties. **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [FULLRIVER](https://baterias.com/gb/fullriver) - **Canonical URL**: https://baterias.com/gb/battery-fullriver-ffd35-12-12v-35ah-225a - **Language**: en-GB - **Brand**: FULLRIVER - **Reference**: BCOM-FULLRIVER-FFD35-12 - **MPN**: FFD35-12 - **Price**: 200,30 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULLRIVER | | Reference | FFD35-12 | | Model | Full Force Series | | Voltage (V) | 12 V | | Largo | 196 cm | | Ancho | 131 cm | | Alto | 167 cm | | Peso | 9.9 kg | | Tecnología | AGM | | EAN | 131843 | | Terminal type | M6 | | Cold cranking amps (EN) | 225 | | Capacity (C20) | 35 | | Case type | U1 | | Capacity (C5) | 29 Ah (c5) | ## Quick description **Fullriver FFD35-12 12V 35Ah 225A** 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 design** built for boat swell and vibration - **Dual function** starts the engine and powers onboard services - **Sealed and safe** maintenance-free even when the boat rolls 🔌 Voltage 12 V ⚡ Capacity 35 Ah C20 🔋 Cold cranking 225 A EN-1 📏 Dimensions 196×131×167 mm ⚙️ Technology AGM ⚖️ Weight 9,9 kg 🏷️ Model FULLRIVER FF ## Description ## Marine battery Fullriver FFD35-12 Full Force Series 35Ah 225A 12V 12*V* Voltage 35*Ah* Capacity 225*A* Cold cranking 9.90*kg* Weight The **Fullriver FFD35-12 marine battery** offers **12 V**, **35 Ah** and **225 A** of cold cranking current (EN) from the **Full Force Series** range with AGM technology, designed for motor and sailing boats, both for engine starting and onboard services. Its 196 × 131 × 167 mm make it the exact replacement for the 35 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 FFD35-12 is for The Fullriver FFD35-12 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 9.90 kg and M6 terminals. ### Dimensions, polarity and mounting It has external dimensions of 196 × 131 × 167 mm and weighs 9.90 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. ### Fullriver: the maker behind the FFD35-12 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. ### The Fullriver FFD35-12: Full Force Series range and AGM technology The FFD35-12 is part of the Fullriver **Full Force 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. ### Care and maintenance 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 FFD35-12 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 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. ## Frequently asked questions ### Is the Fullriver FFD35-12 an AGM battery and what are the benefits of AGM? Yes. The FFD35-12 from Fullriver uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for boats with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### 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 FFD35-12 battery? Dimensions (length × width × height) are 196×131×167 mm — also written as 196x131x167 mm — following the European DIN standard. Always measure the space in your boat before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ## Equivalent batteries - [FULLRIVER DC35-12A](https://baterias.com/gb/battery-agm-fullriver-dc35-12a-12v-35ah) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-30*