# Truck battery Varta A40 12V 140Ah 800A EFB ![Truck battery Varta A40 12V 140Ah 800A EFB](https://baterias.com/4592-home_default/battery-varta-a40-12v-140ah-800a.jpg) > Varta A40 truck battery 12V 140Ah 800A EFB. Official Varta Distributor. ProMotive EFB range. Dimensions 513Γ—189Γ—223 mm, + terminal on the left. **Category:** [Truck Batteries](https://baterias.com/gb/batteries-for-truck) β†’ [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-a40-12v-140ah-800a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-A40 - **EAN**: 4016987167854 - **MPN**: A40 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | A40 | | Model | ProMotive EFB | | Voltage (V) | 12 V | | Largo | 513 mm | | Ancho | 189 mm | | Alto | 223 mm | | TecnologΓ­a | EFB | | EAN | 4016987167854 | | Hold down | B00 | | Cold cranking amps (EN) | 800 A | | Capacity (C20) | 140 Ah (c20) | | Additional ETN | 640500080K182 | ## Quick description **Varta A40 12V 140Ah 800A** is an SHD (Super Heavy Duty) truck battery for intensive professional use. Vibration-resistant, withstands long cold-diesel cranks and deep discharges during parking with active loads (tachograph, refrigeration, heater). ### Why this truck battery? - **True Heavy Duty** built for intensive professional use - **Long cold-diesel cranks** reliable even in extreme cold - **Powers services at idle** tachograph, heater and lights with engine off πŸ”Œ Voltage 12 V ⚑ Capacity 140 Ah C20 πŸ”‹ Cold cranking 800 A EN-1 πŸ“ Dimensions 513Γ—189Γ—223 mm βš™οΈ Technology EFB 🧭 Polarity Positive on the left βš–οΈ Weight 37,09 kg 🏷️ Model ProMotive EFB ## Description ## Varta A40 ProMotive EFB 140Ah 800A 12V Lorry Battery 12*V* Voltage 140*Ah* Capacity 800*A* Cold cranking 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 Γ— 189 Γ— 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 Γ— 189 Γ— 223 mm (length Γ— width Γ— 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 β€” 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. ### Technical sheet Download the official technical sheet for this battery with all the manufacturer data. [Download technical sheet (PDF)](/fichastecnicas/ficha-tecnica-bateria-varta-a40-140ah-800a-12v-en.pdf) ## Frequently asked questions ### How is the Varta A40 battery installed in the vehicle? In most trucks it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (βˆ’) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On trucks with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### What is the service life of the A40 model? Expected lifespan of the Varta A40 is 4 to 7 years in regular use (depends on technology and climate). In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What are the dimensions of the Varta A40 battery? Dimensions (length Γ— width Γ— height) are 513Γ—189Γ—223 mm β€” also written as 513x189x223 mm β€” following the European DIN standard. Always measure the space in your truck before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### Is the A40 valid for my vehicle? Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The A40 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the A40 model? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology β€” an EFB cannot be replaced with a conventional battery in Start-Stop trucks. See the "Equivalents" section to view recommended options at the same performance level. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-01*