Tudor TF1251 Pro HDX · Truck battery 125Ah 850A

Truck battery Tudor TF1251 PRO (Hdx) 125Ah 850A 12V

With 125 Ah and 850 A of cold cranking current (EN), the Tudor TF1251 from the PRO (Hdx) range is built for professional use in trucks, buses, tractors and heavy machinery. It replaces the original battery without adaptation in trucks with a 349 × 175 × 285 mm format: same 125 Ah capacity and the positive terminal on the left.

In short: the Tudor TF1251 (125 Ah, 850 A, 349 × 175 × 285 mm, positive terminal on the left). Verified equivalent alternatives: Varta J2 and Exide EF1251.

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

What the Tudor TF1251 is for

The Tudor TF1251 is designed for trucks, buses, tractors and heavy machinery. In 24 V installations with two batteries in series, replace both at the same time to avoid imbalance. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 31 kg, EN taper post terminals and B0 hold-down.

Size, terminals and hold-down of the Tudor TF1251

The Tudor TF1251 is made in the 349 × 175 × 285 mm format and weighs 31 kg. The positive terminal on the left 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 B0 hold-down and EN taper post 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 Tudor does differently

Tudor has made batteries in Spain for more than a century and remains one of the brands most trusted by Spanish workshops for reliability and value. All the Tudor batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

The Tudor TF1251: PRO (Hdx) range and conventional lead-acid technology

The PRO (Hdx) is the Tudor range the TF1251 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.

In a conventional battery the electrolyte is liquid and the lead plates are immersed in it. It is a mature, economical and easily recycled technology, ideal for starting vehicles in normal use.

How to make it last longer

In 24 V installations, check periodically that both batteries show the same voltage; an imbalance means one is failing. Keep the terminals clean and tight and the battery firmly secured against chassis vibration.

Manufacturer's warranty

The Tudor TF1251 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.

When you get it and how to return it

Order before 6:00 pm with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have 14 days to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email.