Varta M11 · Truck battery 12V 154Ah 1150A

Varta M11 ProMotive SLI (formerly ProMotive HD) 154Ah 1150A 12V Lorry Battery

The Varta M11 lorry battery is the 12 V, 154 Ah model delivering 1150 A of cold cranking power (EN) from Varta's ProMotive SLI (formerly ProMotive HD) range, designed for lorries, buses, large vans and machinery. Measuring 513 × 189 × 223 mm and with the positive terminal on the left, it is the direct replacement for lorries that leave the factory with a 154 Ah battery in this format.

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

Vehicles compatible with the Varta M11 battery

The Varta M11 is compatible with more than 142 vehicles: it is fitted as standard or as a replacement by brands such as Fiat, New Holland, Case, Gueldner, Bourgoin and Bührer. If you are looking for a Fiat battery or a New Holland one in these dimensions, the M11 is one of the usual replacement references. It also appears as a replacement in vehicles from Stavostroj, Schäf, Demag, Bolinders - Volvo, International-Harvester, Yale, Challenger and Marshall, among other manufacturers.

Size and fitting of the Varta M11

Its external dimensions are 513 × 189 × 223 mm and it weighs 39,84 kg. The positive terminal on the left determines which side the cables run to: it is the detail that causes the most buying mistakes, so it is worth checking before ordering. It uses a B00 hold-down and a type 1 terminal, 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 M11 and the ProMotive SLI range

The ProMotive SLI is Varta's starter battery range for commercial and industrial vehicles; it consolidates the former ProMotive HD and SHD names into a single series organised by technology. It delivers a high cold cranking current and a construction designed for the severe demands of heavy haulage.

It is the dependable replacement for lorries, buses, tractor units and machinery working long shifts: resistance to road vibration, tolerance of cycling and guaranteed starting even after weeks standing idle.

An industrial vehicle demands a high cranking current and the stamina to shrug off the vibration of thousands of kilometres. This series uses reinforced grids and a rugged construction to handle repeated starts of large diesel engines and the draw of the cab's auxiliary equipment. This battery used to belong to Varta's ProMotive HD or ProMotive SHD range; following the brand's commercial renaming (2025), it forms part of the new ProMotive SLI series.

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.

Varta combines more than a century of experience with Clarios's industrial production: it is the battery many manufacturers choose as standard and one of the most recommended by workshops. Like any lead-acid battery, it is 100% recyclable.

More than 100 manufacturing parameters are checked on every Varta battery before it leaves the plant, a level of rigour that explains why so many workshops and manufacturers trust the brand as their first-choice replacement.

Manufacturer's warranty

The Varta M11 battery comes with the official manufacturer warranty. One important warning for industrial vehicles: most lorries carry two batteries wired 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 leaves one overcharged and the other short, 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, checking the state of charge and the battery hold-down regularly prevents breakdowns on the road. Vibration and the high temperatures of the engine bay are the factors that shorten its life the 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 downtime caused by a no-start.