Deta DD851T · Truck battery 12V 85Ah 350A GEL

Truck battery Deta DD851T Endurance+PRO Gel 85Ah 350A 12V

The Deta DD851T with GEL technology delivers 85 Ah at 12 V and 350 A of cold cranking current (EN): what trucks, buses, tractors and heavy machinery demand. It measures 349 × 175 × 235 mm and the positive terminal on the left, the format sought by anyone replacing a 85 Ah battery in trucks.

• Heavy Duty construction for intensive professional use.
• GEL technology: gelled electrolyte, fully sealed and maintenance-free.
• Designed for 24 V installations with two batteries in series.
• Powerful cold cranking for large-displacement diesel engines.

What the Deta DD851T is for

Designed for trucks, buses, tractors and heavy machinery, the Deta DD851T 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 29.50 kg, 1 terminals and B00 hold-down.

Will it fit your current battery tray?

In terms of format, the Deta DD851T measures 349 × 175 × 235 mm (length × width × height) and weighs 29.50 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 and 1 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.

The Deta DD851T: Endurance+PRO Gel range and GEL technology

The Endurance+PRO Gel is the Deta range the DD851T 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 GEL battery the electrolyte is gelled with silica: it is fully sealed, cannot spill and tolerates deep discharge very well. It is the preferred technology in electric mobility, marine service and heavy-cycling applications.

What Deta does differently

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.

Warranty and coverage

The Deta DD851T 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.

How to make it last longer

GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte. In 24 V installations, check periodically that both batteries show the same voltage; an imbalance means one is failing.

When you get it and how to return it

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.