# Marine battery Fullriver DC50-12A 12V 50Ah AGM ![Marine battery Fullriver DC50-12A 12V 50Ah AGM](https://baterias.com/103-home_default/battery-agm-fullriver-dc50-12a-12v-50ah.jpg) > Fullriver DC50-12A marine battery 12V 50Ah AGM. Vibration resistant, deep-discharge capable; cranking and house duties. 24-48 h delivery (mainland ES/PT). **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) β†’ [FULLRIVER](https://baterias.com/gb/fullriver) - **Canonical URL**: https://baterias.com/gb/battery-agm-fullriver-dc50-12a-12v-50ah - **Language**: en-GB - **Brand**: FULLRIVER - **Reference**: BCOM-FULLRIVER-DC50-12A - **MPN**: DC50-12 - **Price**: 216,90 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULLRIVER | | Reference | DC50-12 A | | Model | FULLRIVER DC | | Voltage (V) | 12 V | | Largo | 241 mm | | Ancho | 175 mm | | Alto | 190 mm | | Peso | 18.5 kg | | TecnologΓ­a | AGM | | Terminal type | AP | | Cold cranking amps (EN) | 440 | | Capacity (C20) | 50 Ah (c20) | | Capacity (C5) | 41 Ah (c5) | ## Quick description **Fullriver DC50-12A 12V 50Ah 440A** 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 πŸ”Œ Voltage 12 V ⚑ Capacity 50 Ah C20 πŸ”‹ Cold cranking 440 A EN-1 πŸ“ Dimensions 241Γ—175Γ—190 mm βš™οΈ Technology AGM βš–οΈ Weight 18,5 kg 🏷️ Model Fullriver DC ## Description ## Marine battery Fullriver DC50-12A DC 50Ah 440A 12V 12*V* Voltage 50*Ah* Capacity 440*A* Cold cranking 18.50*kg* Weight The **Fullriver DC50-12A** with AGM technology is a marine battery with **50 Ah** and **440 A** of cold cranking current (EN) for motor and sailing boats, both for engine starting and onboard services. It measures 241 Γ— 175 Γ— 190 mm, the format sought by anyone replacing a 50 Ah battery in boats. - Reinforced case against vibration and swell. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Tolerates the daily cycling of a boat in season. - Powers onboard services: lights, sounder, GPS, fridge. ### What the Fullriver DC50-12A is for With 50 Ah, the Fullriver DC50-12A covers motor and sailing boats, both for engine starting and onboard services. At the end of the season, charge it fully before winter storage. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 18.50 kg and AP terminals. ### Size, terminals and hold-down of the Fullriver DC50-12A The Fullriver DC50-12A is made in the 241 Γ— 175 Γ— 190 mm format and weighs 18.50 kg. It uses AP 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. ### The Fullriver DC50-12A: DC range and AGM technology The **DC** is the Fullriver range the DC50-12A 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. ### Fullriver: the maker behind the DC50-12A 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 DC50-12A comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered. ### Care and maintenance As a service battery, avoid routine discharges below 50% to extend its cycle life. At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up. ### Shipping, delivery and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is the Fullriver DC50-12 an AGM battery and what are the benefits of AGM? Yes. The DC50-12 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. ### How do I change this battery step by step? In most boats it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (βˆ’) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On boats with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### What is the service life of the DC50-12 model? Expected lifespan of the Fullriver DC50-12 is 5 to 8 years in mild-climate boat use with Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What size is this battery? Dimensions (length Γ— width Γ— height) are 241Γ—175Γ—190 mm β€” also written as 241x175x190 mm and correspond to the European L2 case size β€” 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. ### Will the Fullriver DC50-12 battery fit my boat? Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The DC50-12 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the DC50-12 model? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology β€” an EFB cannot be replaced with a conventional battery in Start-Stop boats. See the "Equivalents" section to view recommended options at the same performance level. ## Equivalent batteries - [FULLRIVER FT610-47](https://baterias.com/gb/battery-fullriver-ft610-47-12v-50ah-610a) ## Reviews - **Average rating**: 4.81 / 5 (28 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-09-29*