Deta DF1251 PowerPRO · Truck battery 125Ah 850A

Truck battery Deta DF1251 PowerPRO 125Ah 850A 12V

The Deta DF1251 truck battery is rated at 12 V, 125 Ah and 850 A of cold cranking current (EN) from the PowerPRO range, and is prepared for 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 Deta DF1251 (125 Ah, 850 A, 349 × 175 × 285 mm, positive terminal on the left). Verified equivalent alternatives: Varta J2 and Exide EF1251.

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

Dimensions, polarity and mounting

In terms of format, the Deta DF1251 measures 349 × 175 × 285 mm (length × width × height) 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 B00 hold-down, 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.

What the Deta DF1251 is for

The Deta DF1251 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 and B00 hold-down.

The Deta DF1251: PowerPRO range and conventional lead-acid technology

The PowerPRO is the Deta range the DF1251 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.

Deta: the maker behind the DF1251

Deta is the German brand of the Exide group: batteries built with original-equipment technology and a very complete range for cars, Start-Stop, trucks, motorcycles and leisure. All the Deta batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

Official warranty

The Deta DF1251 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.

Care and maintenance

On batteries with filler caps, check the electrolyte level and top up only with distilled water. In 24 V installations, check periodically that both batteries show the same voltage; an imbalance means one is failing.

Delivery times and returns

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.