# Truck battery Varta K4 12V 143Ah 950A ![Truck battery Varta K4 12V 143Ah 950A](https://baterias.com/4241-home_default/battery-varta-k4-12v-143ah-950a.jpg) > Varta K4 truck battery 12V 143Ah 950A. Original, 1-year warranty, 24 h delivery. SHD for professional use. **Category:** [Truck Batteries](https://baterias.com/gb/batteries-for-truck) → [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-k4-12v-143ah-950a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-K4 - **EAN**: 4016987166369 - **MPN**: K4 - **Price**: 225,19 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | K4 | | Model | ProMotive SLI (antes ProMotive HD) | | Voltaje | 12 V | | Capacidad (Ah) | 143 Ah (c20) | | Largo | 514 mm | | Ancho | 218 mm | | Alto | 210 mm | | Peso | 39.85 kg | | Tecnología | PLOMO/ACIDO | | Arranque en frío (CCA) | 950 A | | EAN | 4016987166369 | | Scheme | 3 | | Terminal | 1 | | Subjection | B03 | | Arranque en frío CCA EN | 950 A | | Capacidad C20 (Ah) | 143 Ah | | ETN | 643033095A742 | ## Quick description **Varta K4 12V 143Ah 950A** 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 143 Ah C20 🔋 Cold cranking 950 A EN-1 📏 Dimensions 514×218×210 mm ⚙️ Technology Lead-Acid ⚖️ Weight 39,9 kg 🏷️ Model ProMotive SLI ## Description ## Battery Varta K4 ProMotive SLI (antes ProMotive HD) 143Ah 950A 12V VARTA® ProMotive Heavy Duty is designed for commercial and agricultural vehicles that require reliable starting power. It is OE quality and helps your fleet do its job reliably while minimizing downtime. - Developed in Germany - Patented PowerFrame® grid, offering reliable starting power, fast recharge and corrosion resistance - Meets all original commercial vehicle manufacturer criteria ## Why choose a **Varta K4** battery? Today, the battery has become one of the most important elements of any vehicle. Both the safety systems and the auxiliary elements that equip the vehicles, depend to a great extent on the quality of the battery for its correct operation. There are countless brands of batteries on the market and it is normal for a non-expert user to have doubts about which battery to choose. For that reason, we list some of the reasons why we believe that choosing the right Varta Battery is always a wise choice: - **Leading Brand**: The Varta brand, with over 125 years of history, is the world's leading manufacturer of automotive batteries. Your Varta K4 battery is manufactured by the number one manufacturer in the industry. - **Quality**: During the manufacturing process of the Varta K4 battery, more than 100 parameters are monitored to guarantee the complete quality and reliability of the product. - **Reliability**: The main vehicle manufacturers on the market: Mercedes, BMW, Audi... rely on Varta batteries to equip their new vehicles. Working for these manufacturers means exceeding their strict quality controls and expectations for reliability. **Don't play it. Installing a good battery for your vehicle is a matter of safety and reliability**. If you want additional information about Battery Varta K4, you can download the product's technical sheet at the following link: [ Download technical sheet Varta K4 143Ah 950A 12V](/fichastecnicas/data-sheet-battery-varta-k4-143ah-950a-12v-en.pdf) ## Frequently asked questions ### How do I check that the Varta K4 battery fits my vehicle? Three ways: 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 for the K4; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 9:00–18:00 CET). ### How do I fit the K4 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. ### What warranty does the Varta K4 truck battery have? This battery includes 1 year of official manufacturer warranty against manufacturing defects. It covers internal electrical failures and abnormal capacity drops. It does NOT cover misuse (sulfation from heavy duty without proper recharge, alternator overcharge, etc.). On confirmed defect after technical inspection, we replace the K4 at no cost. ### When will I receive the K4 model? In mainland Spain and Portugal it arrives in 24 h if you order before 17:00 and the battery is in stock — it leaves the same day and arrives the next business day. Afternoon or weekend orders ship the next business day. For Balearics, Canaries and other EU destinations, allow 2-5 days. Shipping cost is calculated in the cart based on destination and service (standard, express, cash on delivery). Tracking number is sent by email + SMS as soon as the parcel ships. ### Are returns accepted on this battery? Yes. You have 14 days from delivery to return it. In mainland Spain and Portugal returns are FREE — we cover the return shipping cost via prepaid label. In other EU countries the return shipping cost is the customer's. It must arrive in its original packaging with no signs of installation. If it was defective, the warranty covers replacement even after the 14-day period. ### How much does the Varta K4 battery cost? The current price at baterias.com is 225,19 € (VAT included; 186,11 € excl. VAT), updated every 24 hours. The applicable VAT may vary with the destination country and is confirmed in the cart. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). ### Where do I find the K4 model online? At baterias.com — authorised distributor with real stock, 24h delivery in mainland Spain and Portugal if you order before 17:00, and full manufacturer warranty. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). Secure payment by card, Bizum, PayPal or bank transfer. If you choose at-home installation, our technician will take the used battery and dispose of it through an authorised collection point. ### How many years does this battery last? Expected lifespan of the Varta K4 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 K4 battery? Dimensions (length × width × height) are 514×218×210 mm — also written as 514x218x210 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. ### How much does the Varta K4 battery weigh? It weighs 39,9 kg. Most of the weight is lead. If you plan to fit it yourself, use gloves and a carrying strap (AGM batteries are slightly heavier than conventional due to the absorbent glass-mat fibre). ### How many Ah and CCA does this battery have? Nominal capacity 143 Ah[?cca: and [cold-cranking amps 950 A]] at 12 V. Ah measure the total energy available (autonomy); CCA (also written A in cold or EN under the European standard) measure the instantaneous power to crank the starter motor. A battery with more CCA starts better in winter; one with more Ah keeps accessories on for longer. ### Is the K4 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 — we reply during business hours (Mon–Fri 9:00–18:00 CET). The K4 fits 834 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. ### Which is better: Varta K4 or an alternative from another brand? This battery and its equivalents from Bosch, Tudor or Exide are technically comparable: same dimensions, same voltage and same capacity. The differences are warranty (Varta and Bosch: 2 years; Tudor and Exide: 2 years on the equivalent line), manufacturing plant (Varta and Bosch share origin in the Clarios Group; Tudor and Exide belong to Exide Technologies) and price. For private use any of these brands will give 4-6 years of life. Compare them in the "Equivalents" section. ### What do users say about the Varta K4 battery? The average rating of the Varta K4 on baterias.com is 4.78/5 from 29 verified customer reviews. The product rating, when available, is shown on the product page next to the stars. You can also check our public Trustpilot profile at shop level (4.4/5 from 10,548+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped trucks that need OBD registration after fitting. ## Compatible vehicles This battery fits 834 vehicles. 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