# Car battery Varta B20 12V 45Ah 400A ![Car battery Varta B20 12V 45Ah 400A](https://baterias.com/3981-home_default/battery-varta-b20-12v-45ah-400a.jpg) > Varta B20 car battery 12V 45Ah 400A. Official Varta Distributor. Dynamic SLI range. Dimensions 207×175×190 mm, + terminal on the left. Check fitment by plate. **Category:** [Car Batteries](https://baterias.com/gb/car-batteries) → [VARTA](https://baterias.com/gb/varta) - **Canonical URL**: https://baterias.com/gb/battery-varta-b20-12v-45ah-400a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-B20 - **EAN**: 4016987167755 - **MPN**: B20 - **Price**: 50,10 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | B20 | | Model | Dynamic SLI (antes Blue Dynamic) | | Voltaje | 12 V | | Largo | 207 mm | | Ancho | 175 mm | | Alto | 190 mm | | Peso | 11.7 kg | | Tecnología | PLOMO/ACIDO | | EAN | 4016987167755 | | Scheme | Positive terminal on the left | | Terminal | 1 | | Subjection | B13 | | Arranque en frío CCA EN | 400 A | | Capacidad C20 (Ah) | 45 Ah (c20) | | ETN | 5454130403122 | ## Quick description **Varta B20 12V 45Ah 400A** is a starter battery with OEM-equivalent quality, designed for modern passenger cars. Delivers reliable cold-cranks even after weeks of inactivity and supports stable auxiliary loads (lights, climate control, infotainment). ### Why this car battery? - **Original-equipment quality** without dealership prices - **Lasts 4 to 6 years** buy once instead of twice - **Real human tech support** if you have any doubts before buying 🔌 Voltage 12 V ⚡ Capacity 45 Ah C20 🔋 Cold cranking 400 A EN-1 📏 Dimensions 207×175×190 mm ⚙️ Technology Plomo-Ácido 🧭 Polarity Positivo a la izquierda ⚖️ Weight 11,46 kg 🏷️ Model Dynamic SLI ## Description ## Varta B20 Dynamic SLI (formerly Blue Dynamic) 45Ah 400A 12V Car Battery 12*V* Voltage 45*Ah* Capacity 400*A* Cold cranking 11,7*kg* Weight The **Varta B20 car battery** is the **12 V**, **45 Ah** and **400 A** cold cranking (EN) model from Varta's **Dynamic SLI (formerly Blue Dynamic)** range, designed for cars with conventional starting, without a Start-Stop system. Its 207 × 175 × 190 mm dimensions and positive terminal on the left make it the exact replacement for the 45 Ah battery fitted as standard in many cars. - Direct replacement for the original battery in cars without Start-Stop. - Reliable cold starting thanks to its high cranking current. - Long service life with normal use and a charging system in good order. - Maintenance-free lead-acid technology: no need to top up with water. ### Vehicles compatible with the Varta B20 battery This battery is listed as compatible with more than 58 vehicles from manufacturers such as Chevrolet, Seat, Fiat, Fso, Daewoo and Tofas. It is a benchmark option when you need a **battery for Chevrolet**, Seat or other models that use this same format. It also appears as a replacement in vehicles from Aro, Hyundai, Lancia, Zastava, ZAZ, Yugo, Austin and Kia, among other manufacturers. Not sure whether it is the right one for your car? Check in seconds by entering your **registration number** in our finder. ### Format and fitting of the Varta B20 The Varta B20 is made in the 207 × 175 × 190 mm format and weighs 11,7 kg. The positive terminal on the left determines which side the cables end up on: it is the detail that causes the most purchasing mistakes, so it is worth checking before ordering. It uses a B13 hold-down and terminal 1, the system that secures it to the vehicle's battery tray. Checking the three dimensions and the terminal positions before buying avoids the most common mistake when replacing a battery. ### The Varta B20 and the Dynamic SLI range The **Dynamic SLI** series (blue label) is Varta's lead-acid line for cars with conventional starting, without Start-Stop. It succeeds the Blue, Silver and Black Dynamic ranges and retains the calcium-silver grid technology that guarantees low self-discharge and reliable cold starting, with no maintenance required. Designed for the bulk of the car and van fleet, it offers Varta's classic balance between cranking power and durability at a keen price: the logical replacement for the original battery in a car without Start-Stop. Compared with an EFB or AGM Start-Stop battery, this range prioritises a contained cost and punchy starting in conventional cars. With proper care — avoiding deep discharges and checking the alternator — a battery in this series delivers several years of trouble-free service. *This battery used to belong to Varta's **Blue Dynamic**, **Silver Dynamic** or **Black Dynamic** range; following the brand's commercial renaming (2025), it forms part of the new **Dynamic 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. 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 B20 battery comes with **a 2-year official warranty** from the manufacturer. ### Care and maintenance To get the most out of it, keep the alternator in good order and avoid leaving lights or accessories on with the engine switched off. Repeated very short journeys are its main enemy: they stop the battery from recharging fully and shorten its life. If the car is going to stand unused for weeks, it is worth disconnecting a terminal or using a trickle charger so it does not discharge below the safe threshold. Checking that the terminals are clean and properly tightened also helps ensure reliable starting. ### Technical sheet Download the official technical sheet for this battery with all the manufacturer data. [Download technical sheet (PDF)](/fichastecnicas/data-sheet-battery-varta-b20-45ah-400a-12v-en.pdf) ## Frequently asked questions ### How do I check that the Varta B20 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 B20; 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 change this battery step by step? In most cars 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 cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### What warranty does the Varta B20 battery have? We provide 2 years of official manufacturer warranty against manufacturing defects. Coverage includes cell breakdowns, internal short-circuits and abnormal capacity decreases. Damage from misuse is excluded: prolonged overcharging, unsuitable chargers or a faulty alternator. If the battery fails, we replace it at no cost after a technical inspection. ### When will I receive the B20 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. ### Can I return the Varta B20 battery if it doesn't fit or doesn't work? 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 B20 battery cost? The current price at baterias.com is 50,10 € (VAT included; 41,41 € 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 B20 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 long does the Varta B20 battery last? Expected lifespan of the Varta B20 is 4 to 6 years in regular car 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 B20 battery? Dimensions (length × width × height) are 207×175×190 mm — also written as 207x175x190 mm and correspond to the European L1 case size — following the European DIN standard. Always measure the space in your car 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 B20 battery weigh? It weighs 11,5 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 45 Ah[?cca: and [cold-cranking amps 400 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. ### What ETN and EAN codes does the Varta B20 battery have? The manufacturer reference (MPN) is B20 and its ETN code is 5454130403122 (short form 545 413 040), the European identifier used in spare-part catalogues. The EAN-13 barcode is 4016987167755. It belongs to the Varta Dynamic SLI range. Any of these codes identifies exactly this battery when requesting quotes or comparing prices. ### Will the Varta B20 battery fit my car? 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 B20 fits 110 verified vehicle versions in our database. ### Which batteries are equivalent to the Varta B20? 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 cars. See the "Equivalents" section to view recommended options at the same performance level. ### Is the B20 model better than its equivalents from other brands? 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 B20 battery? The average rating of the Varta B20 on baterias.com is 4.81/5 from 30 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 (4.5/5 from 11,317+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped cars that need OBD registration after fitting. ## Compatible vehicles This battery fits 110 vehicles. 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