# Wheelchair battery Fullriver DCG51-12 12V 51Ah AGM ![Wheelchair battery Fullriver DCG51-12 12V 51Ah AGM](https://baterias.com/135-home_default/battery-fullriver-dcg51-12-12v-51ah.jpg) > Fullriver DCG51-12 wheelchair battery 12V 51Ah AGM. DCG Series range. Dimensions 229×138×212 mm. For daily wheelchair use. **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [FULLRIVER](https://baterias.com/gb/fullriver) - **Canonical URL**: https://baterias.com/gb/battery-fullriver-dcg51-12-12v-51ah - **Language**: en-GB - **Brand**: FULLRIVER - **Reference**: BCOM-FULLRIVER-DCG51-12 - **MPN**: DCG51-12 - **Price**: 239,40 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULLRIVER | | Reference | DCG51-12 | | Model | FULLRIVER DCG | | Voltage (V) | 12 V | | Largo | 229 mm | | Ancho | 138 mm | | Alto | 208 mm | | Peso | 17.1 kg | | Tecnología | AGM | | Terminal type | M6 | | Capacity (C20) | 51 Ah (c20) | | Capacity (C5) | 43 Ah (c5) | ## Quick description **Fullriver DCG51-12 12V 51Ah** is a deep-cycle battery for wheelchairs and mobility scooters, optimised to be discharged and recharged daily down to 80 % DOD without losing range. ## Why this wheelchair battery? - **Daily cycling without wear** handles deep discharges without losing capacity - **Sealed AGM/GEL** no maintenance, no risk of spills - **Thousands of useful cycles** over its full lifetime 🔌 Voltage 12 V ⚡ Capacity 51 Ah C20 📏 Dimensions 229×138×212 mm ⚙️ Technology AGM ⚖️ Weight 17,1 kg 🏷️ Model DCG Series ## Description ## Marine battery Fullriver DCG51-12 DCG 51Ah 12V 12*V* Voltage 51*Ah* Capacity 17.10*kg* Weight The **Fullriver DCG51-12** with AGM technology is a marine battery with **51 Ah** for motor and sailing boats, both for engine starting and onboard services. It replaces the original battery without adaptation in boats with a 229 × 138 × 208 mm format: same 51 Ah capacity. - Powers onboard services: lights, sounder, GPS, fridge. - Tolerates the daily cycling of a boat in season. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Reinforced case against vibration and swell. ### What the Fullriver DCG51-12 is for On board, the Fullriver DCG51-12 provides 51 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 17.10 kg and M6 terminals. ### The Fullriver DCG51-12: DCG range and AGM technology The DCG51-12 is part of the Fullriver **DCG** 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. ### Dimensions, polarity and mounting It has external dimensions of 229 × 138 × 208 mm and weighs 17.10 kg. It uses M6 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 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. ### How to make it last longer At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. ### Official warranty The Fullriver DCG51-12 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 Orders placed **before 6:00 pm** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have **14 days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships. ## Frequently asked questions ### Is this battery AGM? What is it for? Yes. AGM (Absorbent Glass Mat) technology, 51 Ah and 12 V: sealed lead-acid, with the electrolyte held in glass fibre. It withstands more cycles than a conventional battery and copes better with heat. ### Is this a starting or a service (leisure) battery? Service: it is designed to power electronics, lights, the fridge or the windlass for hours, withstanding deep discharges. On boats with two circuits the ideal is one starting battery and one service battery. ### 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 DCG51-12 battery? Its dimensions are 229×138×212 mm, also written 229x138x212 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 DCG51-12 or Fullriver HC55: which one to choose? The next step up from the DCG51-12 in the same range and the same case. Compared with the DCG51-12 it has 4 Ah more and 620 A of cold cranking more. It costs 122,40 € more. More capacity means more runtime: worth it if your equipment takes the size and had that capacity or more; otherwise the DCG51-12 does the job. ### Fullriver DCG51-12 or MK Powered M55-12 SLD M: which one to choose? It is the verified MK Powered equivalent for the DCG51-12 tray. Compared with the DCG51-12 it has 4 Ah more. It costs 40,30 € less. Decide by price, brand preference and availability: both fit and crank the same. ## Equivalent batteries - [FULLRIVER HC55](https://baterias.com/gb/battery-fullriver-hc55-12v-55ah-620-cca) - [MK POWERED M55-12 SLD M](https://baterias.com/gb/battery-mk-m55-12-sld-m-12v-55ah) - [KRONOBAT ES55-12](https://baterias.com/gb/best-price-battery-12v-55ah-agm-es55-12) - [Q-battery BATTERY-12LCP-56](https://baterias.com/gb/battery-q-battery-12lcp-56-12v-56ah) ## 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 · 2026-11-13*