Fullriver DC26-12B · Marine battery 12V 26Ah 160A AGM
Specifications
| Brand | FULLRIVER |
|---|---|
| Part number | DC26-12B |
| Voltage (V) | 12 |
| Capacity (C20) | 26Ah (c20) |
| Capacity (C5) | 21 3Ah (c5) |
| Technology | AGM |
| Length | 165.00 mm |
| Width | 176.00 mm |
| Height | 125.00 mm |
€131.10
VAT included
4,83/5★★★★★8 reviewsVerified purchases
- ★★★★Iker Saez:
Les llamé y me resolvieron varias dudas sobre la instalación de mi batería
- ★★★★★Juan Carlos Herrero:
No tengo mas que palabras de agradecimiento, la batería me llego al día siguiente y me asesoraron gratis para la instalación
- ★★★★★Marc Flores:
Te atienden fenomenal
Fullriver DC26-12B 12V 26Ah 160A is a marine battery with reinforced anti-vibration case for moorings and offshore use. Tolerates the typical daily cycles on a boat (engine start + night-time services such as lights, sonar, fridge) and holds voltage even when the hull is rolling in open sea.
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
Voltage
12 V
Capacity
26 Ah
Cold cranking
160 A
Dimensions
166×126×174 mm
Technology
AGM
Weight
10,3 kg
Model
DC Series
Marine battery Fullriver DC26-12B DC 26Ah 160A 12V
12VVoltage
26AhCapacity
160ACold cranking
9.40kgWeight
The Fullriver DC26-12B marine battery offers 12 V, 26 Ah and 160 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 165 × 176 × 125 mm, the format sought by anyone replacing a 26 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 DC26-12B is for
The Fullriver DC26-12B 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 9.40 kg and M6 terminals.
Dimensions, polarity and mounting
It has external dimensions of 165 × 176 × 125 mm and weighs 9.40 kg. It uses M6 terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
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. We guarantee that every Fullriver arrives new, charged and with the manufacturer's full warranty.
The Fullriver DC26-12B: DC range and AGM technology
Within the Fullriver catalogue, the DC series groups the references designed for this use. The DC26-12B is the 26 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.
Usage and maintenance tips
As a service battery, avoid routine discharges below 50% to extend its cycle life. Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections.
Manufacturer's warranty
The Fullriver DC26-12B comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
Delivery times 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-DC26-12B
Data sheet
- Brand
- FULLRIVER
- Reference
- DC26-12B
- Model
- FULLRIVER DC
- Voltage (V)
- 12
- Length
- 165.00 mm
- Width
- 176.00 mm
- Height
- 125.00 mm
- Weight
- 9.4 Kgs
- Technology
- AGM
- Terminal type
- M6
- Cold cranking amps (EN)
- 160
- Capacity (C20)
- 26Ah (c20)
- Capacity (C5)
- 21 3Ah (c5)
Specific References
- MPN
- DC26-12B
4,83/5
Verified purchasesLatest verified reviews
★★★★★Iker Saez
28/06/2026Gracias por la ayuda
Les llamé y me resolvieron varias dudas sobre la instalación de mi batería
★★★★★Juan Carlos Herrero
13/01/2026Gran asesoría
No tengo mas que palabras de agradecimiento, la batería me llego al día siguiente y me asesoraron gratis para la instalación
★★★★★Marc Flores
07/01/2026El servicio es insuperable
Te atienden fenomenal
★★★★★Alejandro MuÑoz
10/11/2025Muchas gracias por ayudarme
Les llamé y me resolvieron varias dudas sobre la instalación de mi bateria
Comparison: Fullriver DC26-12B vs equivalents
The Fullriver DC26-12B is interchangeable with these equivalent references: DC26-12A (Fullriver).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Fullriver
DC26-12B
This battery
|
12V 26Ah 160A | AGM | €131.10 |
Fullriver
DC26-12A
|
12V 26Ah 160A | AGM | €120.70 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
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 the Fullriver DC26-12B an AGM battery and what are the benefits of AGM?
Yes. The DC26-12B 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 is the Fullriver DC26-12B battery installed in the vehicle?
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 many years does this battery last?
Expected lifespan of the Fullriver DC26-12B 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 measurements of the DC26-12B model?
Dimensions (length × width × height) are 166×126×174 mm — also written as 166x126x174 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.
Is the DC26-12B valid for my vehicle?
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 DC26-12B typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the DC26-12B 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.
The top-rated online battery store in Spain
-
Audited by Trustpilot, no filters, no edits. The top-rated battery store in Spain.
Trustpilot · verified, no filters
-
Official Varta distributor
Official Varta wholesale distributor. 100% genuine batteries, recently manufactured, best price and no middlemen.
World’s best-selling battery brand
-
+100,000 satisfied customers
More than 100,000 customers already trust baterias.com — and recommend us to their friends and family.
They trust us and recommend us
Choose trust, choose quality, choose baterias.com.