# Marine battery Fullriver DC120-12C 12V 120Ah 750A AGM ![Marine battery Fullriver DC120-12C 12V 120Ah 750A AGM](https://baterias.com/68-home_default/battery-agm-fullriver-dc120-12c-12v-120ah.jpg) > Fullriver DC120-12C marine battery 12V 120Ah 750A AGM. DC Series range. Dimensions 344×172×283 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-agm-fullriver-dc120-12c-12v-120ah - **Language**: en-GB - **Brand**: FULLRIVER - **Reference**: BCOM-FULLRIVER-DC120-12C - **MPN**: DC120-12C - **Price**: 441,90 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULLRIVER | | Reference | DC120-12 C | | Model | FULLRIVER DC | | Voltage (V) | 12 V | | Largo | 341 mm | | Ancho | 172 mm | | Alto | 283 mm | | Peso | 38.7 kg | | Tecnología | AGM | | Terminal type | AP | | Cold cranking amps (EN) | 750 | | Capacity (C20) | 120 Ah (c20) | | Capacity (C5) | 98 Ah (c5) | ## Quick description **Fullriver DC120-12C 12V 120Ah 750A** is a marine battery, vibration- and deep-discharge resistant, suitable both for outboard engine starting and for onboard auxiliary services (navigation lights, GPS, sonar, fridge). Sealed and maintenance-free. ## 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 120 Ah C20 🔋 Cold cranking 750 A EN-1 📏 Dimensions 344×172×283 mm ⚙️ Technology AGM ⚖️ Weight 38,7 kg 🏷️ Model DC Series ## Description ## Marine battery Fullriver DC120-12C DC 120Ah 750A 12V 12*V* Voltage 120*Ah* Capacity 750*A* Cold cranking 38.70*kg* Weight The **Fullriver DC120-12C** with AGM technology is a marine battery with **120 Ah** and **750 A** of cold cranking current (EN) for motor and sailing boats, both for engine starting and onboard services. It measures 341 × 172 × 283 mm, the format sought by anyone replacing a 120 Ah battery in boats. - Tolerates the daily cycling of a boat in season. - Powers onboard services: lights, sounder, GPS, fridge. - Reinforced case against vibration and swell. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. ### What the Fullriver DC120-12C is for On board, the Fullriver DC120-12C provides 120 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 38.70 kg and AP terminals. ### Size, terminals and hold-down of the Fullriver DC120-12C In terms of format, the Fullriver DC120-12C measures 341 × 172 × 283 mm (length × width × height) and weighs 38.70 kg. It uses AP 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. ### Fullriver: the maker behind the DC120-12C 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. All the Fullriver batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### The Fullriver DC120-12C: DC range and AGM technology Within the Fullriver catalogue, the **DC** series groups the references designed for this use. The DC120-12C is the 120 Ah model of that family, with the same performance as its siblings in other sizes. AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly. ### 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 DC120-12C 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. ## Frequently asked questions ### Is the DC120-12C model AGM? What does this technology offer? Yes. The Fullriver DC120-12C is AGM (Absorbent Glass Mat): sealed lead-acid, with the electrolyte absorbed in glass fibre. It withstands more cycles than a conventional battery and copes better with heat. ### 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 DC120-12C battery? Its dimensions are 344×172×283 mm, also written 344x172x283 mm; the height already includes the terminals. Check the room available in your boat, because a single millimetre too much can stop the clamp from closing. ### Fullriver DC120-12C or Fullriver DCG120-12A: which one to choose? It has the same dimensions, voltage and technology as the DC120-12C, although it is not a manufacturer-approved equivalent. Compared with the DC120-12C it has 750 A of cold cranking less. It costs 73,00 € more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap. ## 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 · 2026-11-07*