# Wheelchair battery Fullriver DCG40-12 12V 40Ah AGM ![Wheelchair battery Fullriver DCG40-12 12V 40Ah AGM](https://baterias.com/133-home_default/battery-fullriver-dcg40-12-12v-40ah.jpg) > Fullriver DCG40-12 wheelchair battery 12V 40Ah AGM. DCG Series range. Dimensions 198×166×171 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-dcg40-12-12v-40ah - **Language**: en-GB - **Brand**: FULLRIVER - **Reference**: BCOM-FULLRIVER-DCG40-12 - **MPN**: DCG40-12 - **Price**: 175,90 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULLRIVER | | Reference | DCG40-12 | | Model | FULLRIVER DCG | | Voltage (V) | 12 V | | Largo | 198 mm | | Ancho | 166 mm | | Alto | 171 mm | | Peso | 13.5 kg | | Tecnología | AGM | | Terminal type | M6 | | Capacity (C20) | 40 Ah (c20) | | Capacity (C5) | 33 Ah (c5) | ## Quick description **Fullriver DCG40-12 12V 40Ah** 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 40 Ah C20 📏 Dimensions 198×166×171 mm ⚙️ Technology AGM ⚖️ Weight 13,5 kg 🏷️ Model DCG Series ## Description ## Marine battery Fullriver DCG40-12 DCG 40Ah 12V 12*V* Voltage 40*Ah* Capacity 13.50*kg* Weight The **Fullriver DCG40-12 marine battery** offers **12 V**, **40 Ah** from the **DCG** range with AGM technology, designed for motor and sailing boats, both for engine starting and onboard services. It replaces the original battery without adaptation in boats with a 198 × 166 × 171 mm format: same 40 Ah capacity. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Reinforced case against vibration and swell. - Powers onboard services: lights, sounder, GPS, fridge. - Tolerates the daily cycling of a boat in season. ### Will it fit your current battery tray? The Fullriver DCG40-12 is made in the 198 × 166 × 171 mm format and weighs 13.50 kg. It uses M6 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 DCG40-12 is for The Fullriver DCG40-12 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 13.50 kg and M6 terminals. ### The Fullriver DCG40-12: DCG range and AGM technology The **DCG** is the Fullriver range the DCG40-12 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. 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. ### What Fullriver does differently 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. ### Warranty and coverage The Fullriver DCG40-12 comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered. ### 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. Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections. ### When you get it and how to return it Order **before 6:00 pm** 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 **14 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 DCG40-12 an AGM battery and what are the benefits of AGM? Yes. AGM (Absorbent Glass Mat) technology, 40 Ah and 12 V: sealed lead-acid, with the electrolyte held in glass fibre. It tolerates heat better and handles more cycles than a conventional battery. ### 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 DCG40-12 battery? Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. It measures 198×166×171 mm in length × width × height, with the terminals included in the height. ### Fullriver DCG40-12 or MK Powered M50-12 SLD M: which one to choose? It is the verified MK Powered equivalent for the DCG40-12 tray. Compared with the DCG40-12 it has 10 Ah more. It costs 21,00 € less. Decide by price, brand preference and availability: both fit and crank the same. ### Fullriver DCG40-12 or Ritar RA12-40B: which one to choose? The Ritar alternative that fits where the DCG40-12 goes, with the same polarity. Compared with the DCG40-12 it has 2 Ah more. It costs 33,80 € less. A straight swap with nothing to adapt; the difference is the price and the brand you prefer. ## Equivalent batteries - [MK POWERED M50-12 SLD M](https://baterias.com/gb/battery-mk-m50-12-sld-m-agm-12v-50ah) - [RITAR RA12-40B](https://baterias.com/gb/battery-ritar-ra12-40b-12v-42ah) - [MK POWERED M45-12 SLD M](https://baterias.com/gb/battery-mk-m45-12-sld-m-12v-45ah) - [Q-battery BATTERY-12LCP-50](https://baterias.com/gb/battery-q-battery-12lcp-50-12v-50ah) ## 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 · 2026-11-11*