Fulmen FF1250 · Truck battery 12V 125Ah 850A

Truck battery Fulmen FF1250 PowerPRO 125Ah 850A 12V

With 125 Ah and 850 A of cold cranking current (EN), the Fulmen FF1250 from the PowerPRO range is built for professional use in trucks, buses, tractors and heavy machinery. It measures 349 × 175 × 285 mm and the positive terminal on the right, the format sought by anyone replacing a 125 Ah battery in trucks.

In short: the Fulmen FF1250 (125 Ah, 850 A, 349 × 175 × 285 mm, positive terminal on the right). Verified equivalent alternatives: Varta J1 and Tudor TF1420.

• Designed for 24 V installations with two batteries in series.
• Powerful cold cranking for large-displacement diesel engines.
• Heavy Duty construction for intensive professional use.
• Conventional lead-acid: the most proven and economical technology.

What the Fulmen FF1250 is for

Designed for trucks, buses, tractors and heavy machinery, the Fulmen FF1250 withstands constant chassis vibration and discharges during stops with active loads. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 31 kg and B00 hold-down.

Size, terminals and hold-down of the Fulmen FF1250

The Fulmen FF1250 is made in the 349 × 175 × 285 mm format and weighs 31 kg. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B00 hold-down, 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.

Why choose Fulmen batteries

With more than a century of history, Fulmen offers complete ranges for cars, trucks, motorcycles and leisure with the industrial quality of the Exide group. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

The Fulmen FF1250: PowerPRO range and conventional lead-acid technology

The FF1250 is part of the Fulmen PowerPRO range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.

Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.

Care and maintenance

Keep the terminals clean and tight and the battery firmly secured against chassis vibration. On batteries with filler caps, check the electrolyte level and top up only with distilled water.

Official warranty

The Fulmen FF1250 comes with the manufacturer's official warranty against manufacturing defects. An important note for commercial vehicles: most trucks use two batteries connected in series (24 V installation). If you replace only one, the new battery works alongside the old one, which has already lost capacity; that imbalance shortens its life and the manufacturer may treat it as misuse. Always replace both at the same time.

Shipping, delivery and returns

Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.