Fullriver DC85-12 · Marine battery 12V 85Ah 510A AGM
Marine battery Fullriver DC85-12 12V 85Ah 510A AGM images
Specifications
| Brand | FULLRIVER |
|---|---|
| Part number | DC85-12 |
| Voltage (V) | 12 |
| Capacity (C20) | 85Ah (c20) |
| Capacity (C5) | 70Ah (c5) |
| Cold cranking amps (EN) | 510 |
| Technology | AGM |
| Length | 260.00 mm |
| Width | 169.00 mm |
Fullriver DC85-12 12V 85Ah 510A 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 designbuilt for boat swell and vibration
- Dual functionstarts the engine and powers onboard services
- Sealed and safemaintenance-free even when the boat rolls
Marine battery Fullriver DC85-12 DC 85Ah 510A 12V
The Fullriver DC85-12 marine battery offers 12 V, 85 Ah and 510 A of cold cranking current (EN) from the DC 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 260 × 169 × 215 mm format: same 85 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.
What the Fullriver DC85-12 is for
With 85 Ah, the Fullriver DC85-12 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 25.10 kg and M6 terminals.
Dimensions, polarity and mounting
The Fullriver DC85-12 is made in the 260 × 169 × 215 mm format and weighs 25.10 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.
The Fullriver DC85-12: DC range and AGM technology
Within the Fullriver catalogue, the DC series groups the references designed for this use. The DC85-12 is the 85 Ah model of that family, with the same performance as its siblings in other sizes.
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 DC85-12
Fullriver specialises in deep-cycle AGM batteries for mobility, marine, solar and traction. Its DC and HC series are known for their tolerance to deep discharge and long cycle life. All the Fullriver batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
Official warranty
The Fullriver DC85-12 comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
Care and maintenance
Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up.
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.
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ReferenceBCOM-FULLRIVER-DC85-12
Data sheet
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BrandFULLRIVER
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ReferenceDC85-12
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ModelFULLRIVER DC
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Voltage (V)12
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Length260.00 mm
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Width169.00 mm
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Height215.00 mm
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Weight25.10 Kgs
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TechnologyAGM
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Terminal typeM6
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Cold cranking amps (EN)510
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Capacity (C20)85Ah (c20)
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Capacity (C5)70Ah (c5)
Specific References
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MPNDC85-12
Other 85Ah batteries
We stock 16 models of 85 Ah to compare by price, technology and cold cranking: see all 85Ah batteries.
Recommended accessories
Frequently asked questions
Is the DC85-12 model AGM? What does this technology offer?
Yes. The DC85-12 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 fit the DC85-12 model in my boat?
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 our blog. 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 (−) 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 — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On boats with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Fullriver DC85-12 battery last?
Expected lifespan of the Fullriver DC85-12 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 are the dimensions of the Fullriver DC85-12 battery?
Dimensions (length × width × height) are 260×169×236 mm — also written as 260x169x236 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.
Will the Fullriver DC85-12 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 — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The DC85-12 typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the DC85-12 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 — 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.
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