Fullriver DCG135-12 · Caravan battery 12V 135Ah AGM
Specifications
| Brand | FULLRIVER |
|---|---|
| Part number | DCG135-12 |
| Voltage (V) | 12 |
| Capacity (C20) | 135Ah (c20) |
| Capacity (C5) | 112Ah (c5) |
| Technology | AGM |
| Length | 482.00 mm |
| Width | 170.00 mm |
| Height | 223.00 mm |
€584.90
VAT included
4,93/5★★★★★9 reviewsVerified purchases
- ★★★★★Oscar Bravo:
Gracias a vosotros pude instalar correctamente la batería
- ★★★★★Fernando Montero:
Pedí la batería un lunes a las 7 y me llegó el martes a las 4
- ★★★★★Ignacio NuÑez:
Gracias a vosotros pude instalar correctamente la bateria
Fullriver DCG135-12 12V 135Ah is a battery for auxiliary services in motorhomes, caravans and campers. Powers the fridge, interior lighting, water pump and sockets while parked, with no need for campsite mains. Withstands daily discharges throughout the season.
Why this caravan battery?
- Real off-grid autonomyno campsite hookup needed
- Lasts the whole seasonhandles daily discharges without capacity loss
- Powers it all at oncefridge, water pump, LED and USB without issues
Voltage
12 V
Capacity
135 Ah
Dimensions
482×170×229 mm
Technology
AGM
Weight
42,5 kg
Model
DCG Series
Marine battery Fullriver DCG135-12 DCG 135Ah 12V
12VVoltage
135AhCapacity
42.50kgWeight
The Fullriver DCG135-12 with AGM technology is a marine battery with 135 Ah for motor and sailing boats, both for engine starting and onboard services. It measures 482 × 170 × 223 mm, the format sought by anyone replacing a 135 Ah battery in boats.
- Tolerates the daily cycling of a boat in season.
- Powers onboard services: lights, sounder, GPS, fridge.
- Reinforced case against vibration and swell.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
What the Fullriver DCG135-12 is for
On board, the Fullriver DCG135-12 provides 135 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 42.50 kg and M8 terminals.
Size, terminals and hold-down of the Fullriver DCG135-12
The Fullriver DCG135-12 is made in the 482 × 170 × 223 mm format and weighs 42.50 kg. It uses M8 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.
Fullriver: the maker behind the DCG135-12
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. We guarantee that every Fullriver arrives new, charged and with the manufacturer's full warranty.
The Fullriver DCG135-12: DCG range and AGM technology
The DCG135-12 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 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.
Care and maintenance
Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections. At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up.
Manufacturer's warranty
The Fullriver DCG135-12 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
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.
BCOM-FULLRIVER-DCG135-12
Data sheet
- Brand
- FULLRIVER
- Reference
- DCG135-12
- Model
- FULLRIVER DCG
- Voltage (V)
- 12
- Length
- 482.00 mm
- Width
- 170.00 mm
- Height
- 223.00 mm
- Weight
- 42.5 Kgs
- Technology
- AGM
- Terminal type
- M8
- Capacity (C20)
- 135Ah (c20)
- Capacity (C5)
- 112Ah (c5)
Specific References
- MPN
- DCG135-12
4,93/5
Verified purchasesLatest verified reviews
★★★★★Oscar Bravo
23/07/2026Me ayudaron a instalar la batería
Gracias a vosotros pude instalar correctamente la batería
★★★★★Fernando Montero
10/02/2026Entrega eficaz
Pedí la batería un lunes a las 7 y me llegó el martes a las 4
★★★★★Ignacio NuÑez
30/10/2025Me asesoraron en la instalación
Gracias a vosotros pude instalar correctamente la bateria
Recommended accessories
How to change the battery
Guide to replace a marine battery (cranking or house) in 20-30 minutes. Moisture and vibration in marine environments require reinforced hold-downs and sealed copper terminals.
Step 1. Prepare the vehicle
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Step 2. Locate the battery compartment
Usually under the passenger bench, engine room or a dedicated ventilated compartment. Verify the compartment is dry and well ventilated before opening.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Marine batteries are heavy (15-50 kg). If it has rope handles, use them; otherwise have a carry strap ready. Secure the new one with metal hold-downs (not plastic) to resist sea-state vibration.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify circuit + water protection
Apply dielectric grease on terminals to prevent salt-air corrosion. Check the engine charging circuit delivers 13.8-14.4 V at 2,000 rpm.
Frequently asked questions
Is this battery AGM? What is it for?
Yes. The DCG135-12 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 (−) 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 DCG135-12 battery last?
Expected lifespan of the Fullriver DCG135-12 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 DCG135-12 battery?
Dimensions (length × width × height) are 482×170×229 mm — also written as 482x170x229 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 DCG135-12 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 DCG135-12 typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the DCG135-12 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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