Fullriver FT1250-4DLT · Marine battery 12V 175Ah 1250A AGM
Specifications
| Brand | FULLRIVER |
|---|---|
| Part number | FT1250-4DLT |
| Voltage (V) | 12 |
| Capacity (C20) | 175 |
| Cold cranking amps (EN) | 1250 |
| Technology | AGM |
| Length | 513.00 cm |
| Width | 223.00 cm |
| Height | 222.00 cm |
Fullriver FT1250-4DLT 12V 175Ah 1250A 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

Marine battery Fullriver FT1250-4DLT Full Throttle Series 175Ah 1,250A 12V
The Fullriver FT1250-4DLT with AGM technology is a marine battery with 175 Ah and 1,250 A of cold cranking current (EN) for motor and sailing boats, both for engine starting and onboard services. It replaces the original battery without adaptation in boats with a 513 × 223 × 222 mm format: same 175 Ah capacity.
- Powers onboard services: lights, sounder, GPS, fridge.
- Tolerates the daily cycling of a boat in season.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Reinforced case against vibration and swell.
Dimensions, polarity and mounting
It has external dimensions of 513 × 223 × 222 mm and weighs 56.40 kg. It uses M8 + TP28 (SAE) 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 FT1250-4DLT is for
On board, the Fullriver FT1250-4DLT provides 175 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 56.40 kg and M8 + TP28 (SAE) terminals.
The Fullriver FT1250-4DLT: Full Throttle Series range and AGM technology
Within the Fullriver catalogue, the Full Throttle Series series groups the references designed for this use. The FT1250-4DLT is the 175 Ah model of that family, with the same performance as its siblings in other sizes.
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.
Fullriver: the maker behind the FT1250-4DLT
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.
Manufacturer's warranty
The Fullriver FT1250-4DLT comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
Care and maintenance
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.
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.
Data sheet
-
BrandFULLRIVER
-
ReferenceFT1250-4DLT
-
ModelFull Throttle Series
-
Voltage (V)12
-
Length513.00 cm
-
Width223.00 cm
-
Height222.00 cm
-
Weight56.40 Kgs
-
TechnologyAGM
-
Terminal typeM8 + TP28 (SAE)
-
Cold cranking amps (EN)1250
-
Capacity (C20)175
-
Case type4DLT
Specific References
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MPNFT1250-4DLT
Comparison: Fullriver FT1250-4DLT vs equivalents
The Fullriver FT1250-4DLT is interchangeable with these equivalent references: EP1500 (Exide).
| Product | Specifications | Technology | Price |
|---|---|---|---|
|
|
12V 175Ah 1250A | AGM | €773.40 |
|
|
12V 180Ah 900A | AGM | €395.90 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
Recommended accessories
Frequently asked questions
Is the Fullriver FT1250-4DLT an AGM battery and what are the benefits of AGM?
Yes. The FT1250-4DLT 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 FT1250-4DLT 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 FT1250-4DLT battery last?
Expected lifespan of the Fullriver FT1250-4DLT 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 FT1250-4DLT model?
Dimensions (length × width × height) are 513×223×222 mm — also written as 513x223x222 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 FT1250-4DLT 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 FT1250-4DLT typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the FT1250-4DLT 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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