# Truck battery Varta K8 12V 140Ah 800A ![Truck battery Varta K8 12V 140Ah 800A](https://baterias.com/4249-home_default/battery-varta-k8-12v-140ah-800a.jpg) > Varta K8 truck battery 12V 140Ah 800A. Official Varta Distributor. ProMotive SLI range. Dimensions 513×189×223 mm, + terminal on the left. **Category:** [Truck Batteries](https://baterias.com/gb/batteries-for-truck) → [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-k8-12v-140ah-800a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-K8 - **EAN**: 4016987166345 - **MPN**: K8 - **Price**: 212,50 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | K8 | | Model | ProMotive SLI (antes ProMotive HD) | | Voltage (V) | 12 V | | Capacity | 140 Ah (c20) | | Largo | 513 mm | | Ancho | 189 mm | | Alto | 223 mm | | Peso | 37.4 kg | | Tecnología | Lead-acid | | EAN | 4016987166345 | | Terminal layout | Positive terminal on the left | | Terminal type | 1 | | Hold down | B03 | | Cold cranking amps (EN) | 800 | | Capacity (C20) | 140 | | ETN | 640400080A732 | ## Quick description **Varta K8 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 🔌 Voltage 12 V ⚡ Capacity 140 Ah C20 🔋 Cold cranking 800 A EN-1 📏 Dimensions 513×189×223 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the left ⚖️ Weight 34,76 kg 🏷️ Model ProMotive SLI ## Description ## Varta K8 ProMotive SLI (formerly ProMotive HD) 140Ah 800A 12V Lorry Battery 12*V* Voltage 140*Ah* Capacity 800*A* Cold cranking 37.4*kg* Weight The **Varta K8 lorry battery** is the **12 V**, **140 Ah** model delivering **800 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 with the positive terminal on the left, it is the direct replacement for lorries that leave the factory with a 140 Ah battery in this format. - High cranking current for large-capacity diesel engines. - Withstands the vibration of thousands of kilometres on the road. - Reinforced grids and casing for the severe demands of haulage. - Dependable through repeated starts and while powering cab equipment. ### Vehicles compatible with the Varta K8 battery According to our database, the Varta K8 is fitted to more than 360 vehicles from makes such as Fiat, Deutz-Fahr, Fendt, Claas, John Deere and Massey Ferguson, among others. If you are looking for a **battery for a Fiat** or a Deutz-Fahr with these dimensions, the K8 is one of the usual replacement references. It also appears as a replacement in vehicles from Case, Gueldner, Bührer, Stavostroj, Steyr, Timberjack, Bourgoin and Komatsu, among other manufacturers. ### Format and fitting of the Varta K8 Its external dimensions are 513 × 189 × 223 mm and it weighs 37.4 kg. The positive terminal on the left determines which side the cables end up on: this is the detail behind more wrong purchases than any other, so it is worth checking before you order. It takes a B03 hold-down and terminal 1, the system that anchors it to the vehicle's battery tray. Before replacing it, measure the space your current battery occupies: if it matches on all three dimensions and on terminal position, the swap is direct and needs no adapters. ### The Varta K8 and the ProMotive SLI range The **ProMotive SLI** series is Varta's starter line for professional transport, bringing the former ProMotive HD and SHD together under a single name. It is built to crank large-capacity diesel engines and to take the daily punishment of the lorry, the bus and site machinery. The key to this range is sheer toughness: reinforced plates and mountings that resist thousands of kilometres of vibration and deep discharge cycles, keeping fleet downtime from starting failures to a minimum. Commercial vehicles demand high cranking current and endurance against the vibration of thousands of kilometres. This series uses reinforced grids and a robust construction to cope with repeated starts of large diesel engines and with 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 now forms part of the new **ProMotive SLI** series.* ### Why choose a Varta battery Choosing Varta means sticking with the reference the vehicle manufacturer itself signed off in the first place. Against own-brand batteries, the difference is not the purchase price but how many winters the battery lasts before it leaves you stranded. Varta batteries are made under the Clarios group with German technology and quality controls that make them one of the best-selling choices in Europe. As a lead battery, it is 100% recyclable through any collection point. 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 K8 battery comes with the **official manufacturer warranty**. An important warning for commercial vehicles: most lorries run **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 — and that imbalance means one overcharges while the other falls short, shortens the life of the new unit and may be treated by the manufacturer as improper use, **voiding 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 what shortens a battery's 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 downtime caused by a battery that will not start the engine. ### Technical sheet Download the official technical sheet for this battery with all the manufacturer data. [Download technical sheet (PDF)](/fichastecnicas/data-sheet-battery-varta-k8-140ah-800a-12v-en.pdf) ## Frequently asked questions ### How do I fit the K8 model in my truck? 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 our blog. 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 (−) 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 — with positive on the left match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). 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 K8 model? Expected lifespan of the Varta K8 is 4 to 6 years in regular truck use without Start-Stop. 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 K8 battery? Dimensions (length × width × height) are 513×189×223 mm — also written as 513x189x223 mm — 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. ### Which side is the positive terminal on this battery? Polarity: positive on the left. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk. ### Does this battery fit my truck? 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 — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The K8 fits 195 verified vehicle versions in our database. ### Which batteries are equivalent to the Varta K8? 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 — 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. ## Compatible vehicles This battery fits 195 vehicles. Most searched: - [RENAULT MIDLINER (1990)](https://baterias.com/gb/batteries-for-urban-transport/renault/midliner) - [MERCEDES-BENZ LK/LN2 (1990)](https://baterias.com/gb/batteries-for-truck/mercedes-benz/lkln2) - [FIAT Others (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/fiat/others) - [FENDT Farmer (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/fendt/farmer) - [VOLVO FL (2000)](https://baterias.com/gb/batteries-for-truck/volvo/fl) - [DEUTZ-FAHR DX-Serie (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/deutz-fahr/dx-serie) - [RENAULT C (1990)](https://baterias.com/gb/batteries-for-truck/renault/c) - [FIAT 100-Serie (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/fiat/100-serie) - [JOHN DEERE Combine Harvester (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/john-deere/combine-harvester) - [KHD M (1990)](https://baterias.com/gb/batteries-for-truck/khd/m) - [MAGIRUS-DEUTZ M (1990)](https://baterias.com/gb/batteries-for-truck/magirus-deutz/m) - [CLAAS Dominator (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/claas/dominator) - [MAGIRUS-DEUTZ |others (1990)](https://baterias.com/gb/batteries-for-truck/magirus-deutz/others) - [DEUTZ-FAHR |others (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/deutz-fahr/others) - [FIAT NC (1990)](https://baterias.com/gb/batteries-for-truck/fiat/nc) ## Equivalent batteries - [TUDOR TF1453](https://baterias.com/gb/battery-tudor-tf1453-145ah-900a) - [TUDOR TE1403](https://baterias.com/gb/battery-tudor-te1403-140ah-800a) - [EXIDE EE1403](https://baterias.com/gb/battery-exide-ee1403-12v-140ah-800a) - [EXIDE EF1453](https://baterias.com/gb/battery-exide-ef1453-12v-145ah-900a) - [EXIDE EG1403](https://baterias.com/gb/battery-exide-eg1403-12v-140ah-800a) - [TUDOR TG1403](https://baterias.com/gb/battery-tudor-tg1403-12v-140ah-800a) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2015. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-15*