Varta A40 · Truck battery 12V 140Ah 800A EFB

Varta A40 ProMotive EFB 140Ah 800A 12V Lorry Battery

The Varta A40 lorry battery is the 12 V, 140 Ah model with 800 A of cold cranking power (EN) from Varta's ProMotive EFB range, designed for lorries, buses, large vans and machinery. Its 513 × 189 × 223 mm dimensions make it the exact replacement for the 140 Ah battery fitted as standard in many lorries.

• Tolerance of the vibration of thousands of kilometres on the road.
• High cranking current for large-displacement diesel engines.
• Reliability through repeated starts and while powering cab equipment.
• Reinforced grids and casing for the harsh demands of haulage.

Applications of the Varta A40 battery

The Varta A40 covers the needs of lorries, buses, large vans and machinery with 140 Ah of capacity and a construction built for that use. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a B00 hold-down.

Format and fitting of the Varta A40

In format, the Varta A40 measures 513 × 189 × 223 mm (length × width × height). It uses a B00 hold-down, the system that anchors it to the vehicle's battery tray. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.

The Varta A40 and the ProMotive EFB range

The ProMotive EFB range uses reinforced EFB technology for commercial transport with frequent starts and a heavy electrical draw. It stands up to the cycling of professional use far better than a conventional battery.

It is the middle-ground solution for lorries and large vans: more durability than standard lead without the cost of AGM, ideal for delivery work and routes with plenty of stops.

A commercial vehicle demands a high cranking current and endurance against the vibration of thousands of kilometres. This series uses reinforced grids and rugged construction to cope with repeated starts of large diesel engines and with the draw of auxiliary cab equipment.

Why choose a Varta battery

Manufactured by Clarios to German standards, Varta is one of the world's benchmark brands in starter batteries and an OEM supplier to the leading car makers. Choosing it as a replacement guarantees specifications equal to or better than the originals.

Behind Varta is Clarios, one of the largest manufacturers of starter batteries in the world and a supplier to the assembly lines of numerous car brands. That German engineering heritage translates into reliable starting year after year.

Varta's production combines automated lines with verification of more than 100 parameters per unit; that traceability is what underpins its reputation for reliable starting throughout the battery's life.

Manufacturer's warranty

The Varta A40 battery comes with the official manufacturer warranty. One important warning for commercial vehicles: most lorries carry two batteries connected in series (a 24 V installation). If you replace only one, the new battery ends up working alongside the old one — which has already lost capacity and has higher internal resistance; that imbalance means one is overcharged while the other falls short, it shortens the life of the new unit, and the manufacturer may treat it as misuse and void the warranty. That is why it is always advisable to change both batteries at the same time.

Care and maintenance

In professional use, periodically checking the state of charge and the battery hold-down prevents breakdowns out on the road. Vibration and the high temperatures of the engine bay are the factors that shorten its life most, so secure mounting is key. Keeping the terminals clean and tight and checking the charging system extends battery life in vehicles that clock up long hours. A well-maintained battery reduces the risk of stoppages caused by a failure to start.