# Truck battery Varta K7 12V 145Ah 800A ![Truck battery Varta K7 12V 145Ah 800A](https://baterias.com/4245-home_default/battery-varta-k7-12v-145ah-800a.jpg) > Varta K7 truck battery 12V 145Ah 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-k7-12v-145ah-800a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-K7 - **EAN**: 4016987166338 - **MPN**: K7 - **Price**: 140,90 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | K7 | | Model | ProMotive SLI (antes ProMotive HD) | | Voltage (V) | 12 V | | Capacity | 145 Ah (c20) | | Largo | 513 mm | | Ancho | 189 mm | | Alto | 223 mm | | Peso | 37 kg | | Tecnología | Lead-acid | | EAN | 4016987166338 | | Terminal layout | Positive terminal on the left | | Terminal type | 1 | | Hold down | B00 | | Cold cranking amps (EN) | 800 | | Capacity (C20) | 145 | | ETN | 645400080A722 | ## Quick description **Varta K7 12V 145Ah 800A** is a professional battery for heavy commercial vehicles. Withstands constant chassis vibration, supports long cold-engine cranks and keeps auxiliary services running (tachograph, heater, refrigeration, GPS) during driver's mandatory rest stops. ### 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 145 Ah C20 🔋 Cold cranking 800 A EN-1 📏 Dimensions 513×189×223 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the left ⚖️ Weight 37,12 kg 🏷️ Model ProMotive SLI ## Description ## Varta K7 ProMotive SLI (formerly ProMotive HD) 145Ah 800A 12V Lorry Battery 12*V* Voltage 145*Ah* Capacity 800*A* Cold cranking 37*kg* Weight The **Varta K7 lorry battery** is the **12 V**, **145 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. Its 513 × 189 × 223 mm dimensions and positive terminal on the left make it the exact replacement for the 145 Ah battery fitted as standard in many lorries. - Reinforced grids and casing for the severe demands of haulage. - Dependable through repeated starts and while powering cab equipment. - High cranking current for large-capacity diesel engines. - Withstands the vibration of thousands of kilometres on the road. ### Vehicles compatible with the Varta K7 battery The Varta K7 is compatible with more than 948 vehicles: it is fitted as standard or as a replacement by makes such as Fiat, Deutz-Fahr, Volvo, Fendt, John Deere and New Holland. It is a benchmark choice when you need a **battery for a Fiat**, a Deutz-Fahr or other models built around this same format. It also appears as a replacement in vehicles from Komatsu, Claas, Khd, Gueldner, Case, Caterpillar, Bourgoin and Stavostroj, among other manufacturers. It has been cross-checked against 2 original equipment references from different manufacturers. ### Format and fitting of the Varta K7 Its external dimensions are 513 × 189 × 223 mm and it weighs 37 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 B00 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 K7 and the ProMotive SLI range The **ProMotive SLI** range is Varta's starter series for commercial vehicles — lorries, buses and machinery — and in the new portfolio it unifies the former ProMotive HD (Heavy Duty) and SHD (Super Heavy Duty). It offers high cranking current for large-capacity diesel engines and a reinforced construction. Its reinforced grids and separators stand up to the vibration and cycling of long-distance haulage and of the most severe use, aiming for maximum service life and starting reliability in fleets that work long hours. Compared with a car battery, this range is calibrated for severe, continuous use: greater mechanical strength and more tolerance of cycling and of the knocks of the road. It is the correct replacement for a lorry, bus or machine working long shifts. *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 Varta is a byword for reliability: original equipment in a great many European vehicles and one of the most proven brands on the market. Replacing your battery with a Varta restores OEM quality — the same performance as the factory-fitted unit — with the manufacturer's backing behind it. 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. 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 K7 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-k7-145ah-800a-12v-en.pdf) ## Frequently asked questions ### How do I fit the K7 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 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 (−) 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 — 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. ### How long does the Varta K7 battery last? Expected lifespan of the Varta K7 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 K7 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. ### Will the Varta K7 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 K7 fits 948 verified vehicle versions in our database. ### Which interchangeable batteries are there for this one? 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 948 vehicles. Most searched: - [MERCEDES-BENZ SK (1990)](https://baterias.com/gb/batteries-for-truck/mercedes-benz/sk) - [MAN L2000 (1993)](https://baterias.com/gb/batteries-for-truck/man/l2000) - [MERCEDES-BENZ UNIMOG (1990)](https://baterias.com/gb/batteries-for-truck/mercedes-benz/unimog) - [MAN M 2000 L (1995)](https://baterias.com/gb/batteries-for-truck/man/m-2000-l) - [FENDT Farmer (1990)](https://baterias.com/gb/batteries-for-agricultural-and-construction-vehicles/fendt/farmer) - [MERCEDES-BENZ NG (1990)](https://baterias.com/gb/batteries-for-truck/mercedes-benz/ng) - [MAN TGS I (2005)](https://baterias.com/gb/batteries-for-truck/man/tgs-i) - [FENDT Farmer (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/fendt/farmer) - [VOLVO FL6 (1990)](https://baterias.com/gb/batteries-for-truck/volvo/fl6) - [FIAT Series (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/fiat/series) - [FIAT Series (1990)](https://baterias.com/gb/batteries-for-agricultural-and-construction-vehicles/fiat/series) - [HANOMAG F (1990)](https://baterias.com/gb/batteries-for-truck/hanomag/f) - [SCANIA P,G,R,T - series (2003)](https://baterias.com/gb/batteries-for-truck/scania/pgrt-series) - [FIAT 600 (1990)](https://baterias.com/gb/batteries-for-construction-and-agricultural-machinery/fiat/600) - [VOLVO Bagger (1990)](https://baterias.com/gb/batteries-for-agricultural-and-construction-vehicles/volvo/bagger) ## Equivalent batteries - [VARTA I8](https://baterias.com/gb/battery-varta-i8-12v-120ah-680a) - [EXIDE EG1203](https://baterias.com/gb/battery-exide-eg1203-12v) - [EXIDE EG1403](https://baterias.com/gb/battery-exide-eg1403-12v-140ah-800a) - [TUDOR TG1203](https://baterias.com/gb/battery-tudor-tg1203-12v-120ah-680a) - [TUDOR TG1403](https://baterias.com/gb/battery-tudor-tg1403-12v-140ah-800a) ## Reviews - **Average rating**: 4.77 / 5 (51 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-09-28*