Fullriver DC17-12 · Marine battery 12V 17Ah 120A AGM
Specifications
| Brand | FULLRIVER |
|---|---|
| Part number | DC17-12 |
| Voltage (V) | 12 |
| Capacity (C20) | 17Ah (c20) |
| Cold cranking amps (EN) | 120 |
| Technology | AGM |
| Length | 181.00 mm |
| Width | 77.00 mm |
| Height | 167.00 mm |
Fullriver DC17-12 12V 17Ah 120A 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
Where it fits: the Fullriver DC17-12 is one of our boat batteries, belongs to our Fullriver batteries and by capacity it sits among our 17Ah batteries.

Marine battery Fullriver DC17-12 DC 17Ah 120A 12V
The Fullriver DC17-12 marine battery offers 12 V, 17 Ah and 120 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 measures 181 × 77 × 167 mm, the format sought by anyone replacing a 17 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.
Dimensions, polarity and mounting
The Fullriver DC17-12 is made in the 181 × 77 × 167 mm format and weighs 6.22 kg. It uses M5 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.
What the Fullriver DC17-12 is for
With 17 Ah, the Fullriver DC17-12 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 6.22 kg and M5 terminals.
The Fullriver DC17-12: DC range and AGM technology
The DC is the Fullriver range the DC17-12 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.
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. All the Fullriver batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
Warranty and coverage
The Fullriver DC17-12 comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
Usage and maintenance tips
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.
When you get it and how to return it
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.
Comparison: Fullriver DC17-12 vs equivalents
The Fullriver DC17-12 is interchangeable with these equivalent references: DC20-12 (Fullriver).
| Product | Specifications | Technology | Price |
|---|---|---|---|
|
|
12V 17Ah 120A | AGM | €82.10 |
|
|
12V 20Ah 135A | AGM | €85.80 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Other 17Ah batteries
We stock 3 models of 17 Ah to compare by price, technology and cold cranking: see all 17Ah batteries. Same size (181 × 77 × 167 mm): batteries of 181 × 77 × 167 mm.
Recommended accessories
Frequently asked questions
Is the Fullriver DC17-12 an AGM battery and what are the benefits of AGM?
Yes. The DC17-12 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.
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 DC17-12 battery?
Dimensions (length × width × height) are 181×77×167 mm — also written as 181x77x167 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.
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