# Car battery Varta B31 12V 45Ah 330A ![Car battery Varta B31 12V 45Ah 330A](https://baterias.com/3993-home_default/battery-varta-b31-12v-45ah-330a.jpg) > Varta B31 car battery 12V 45Ah 330A. Official Varta Distributor. Dynamic SLI range. Dimensions 238×129×227 mm, + terminal on the right. 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-b31-12v-45ah-330a - **Language**: en-GB - **Brand**: VARTA - **Reference**: BCOM-VARTA-B31 - **EAN**: 4016987167526 - **MPN**: B31 - **Price**: 47,60 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | VARTA | | Reference | B31 | | Model | Dynamic SLI (antes Blue Dynamic) | | Voltage (V) | 12 V | | Largo | 238 mm | | Ancho | 129 mm | | Alto | 227 mm | | Peso | 11.7 kg | | Tecnología | Lead-acid | | EAN | 4016987167526 | | Terminal layout | Positive terminal on the right | | Terminal type | 3 | | Hold down | B00 | | Cold cranking amps (EN) | 330 A | | Capacity (C20) | 45 Ah (c20) | | ETN | 5451550333132 | ## Quick description **Varta B31 12V 45Ah 330A** 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 330 A EN-1 📏 Dimensions 238×129×227 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the right ⚖️ Weight 11,3 kg 🏷️ Model Dynamic SLI ## Description ## Varta B31 Dynamic SLI (formerly Blue Dynamic) 45Ah 330A 12V Car Battery 12*V* Voltage 45*Ah* Capacity 330*A* Cold cranking 11,7*kg* Weight The **Varta B31 car battery** is the **12 V**, **45 Ah** model with **330 A** of cold cranking power (EN) from Varta's **Dynamic SLI (formerly Blue Dynamic)** range, intended for cars with conventional starting, without a Start-Stop system. Measuring 238 × 129 × 227 mm and with the positive terminal on the right, it is the direct replacement for cars fitted from the factory with a 45 Ah battery in this format. - Reliable cold starting thanks to its high cranking current. - Direct replacement for the original battery in cars without Start-Stop. - Maintenance-free lead-acid technology: no topping up with water. - Long service life with normal use and a charging system in good order. ### Vehicles compatible with the Varta B31 battery This battery is listed as compatible with more than 120 vehicles from manufacturers such as Toyota, Nissan, Suzuki, Honda, Daihatsu and Subaru. For anyone who needs to change the **battery in their Toyota** or Nissan, this Varta B31 reproduces the original specifications. It also appears as a replacement in vehicles from Mazda, Hafei, Kia, Geo, Lexus, Isuzu, Proton and Audi, among other manufacturers. Not sure whether it is the one for your car? Check in seconds by entering your **registration** in our finder. ### Format and fitting of the Varta B31 Its external dimensions are 238 × 129 × 227 mm and it weighs 11,7 kg. The positive terminal on the right determines which side the cables end up on: it is the detail that causes the most buying mistakes, so it is worth checking before you order. It uses a B00 hold-down and terminal 3, 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 B31 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 keeps the calcium-silver grid technology that guarantees low self-discharge and reliable cold starting, with no maintenance required. Aimed at the bulk of the car and van fleet, it offers Varta's classic balance between cranking power and durability at a moderate 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 puts the emphasis on a keen price and punchy starting in conventional cars. With proper care — avoiding deep discharges and checking the alternator — a battery from 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 Choosing Varta means sticking with the reference the car manufacturer itself approved in the first place. Against own-brand batteries, the difference is not in the purchase price but in how many winters the battery lasts before leaving 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. 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 B31 battery comes with the **official manufacturer warranty**. ### 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 the terminal or using a trickle charger so it does not drop below the safe threshold. Making sure the terminals are clean and properly tightened also helps towards 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-b31-45ah-330a-12v-en.pdf) ## Frequently asked questions ### How is the Varta B31 battery installed in the vehicle? 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 is the service life of the B31 model? Expected lifespan of the Varta B31 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 B31 battery? Dimensions (length × width × height) are 238×129×227 mm — also written as 238x129x227 mm — 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. ### What barcode does this battery have? The manufacturer reference (MPN) is B31 and its ETN code is 5451550333132 (short form 545 155 033), the European identifier used in spare-part catalogues. The EAN-13 barcode is 4016987167526. 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 B31 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 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The B31 fits 152 verified vehicle versions in our database. ### Which batteries are equivalent to the Varta B31? 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. ## Compatible vehicles This battery fits 152 vehicles. Most searched: - [SUZUKI SWIFT IV (FZ, NZ) (2010)](https://baterias.com/gb/car-batteries/suzuki/swift-iv-fz-nz) - [NISSAN GT-R (R35) (2007)](https://baterias.com/gb/car-batteries/nissan/gt-r-r35) - [TOYOTA CALDINA Estate (\_T19\_) (1990)](https://baterias.com/gb/car-batteries/toyota/caldina-estate-_t19) - [NISSAN PATHFINDER IV (R52) (2012)](https://baterias.com/gb/car-batteries/nissan/pathfinder-iv-r52) - [NISSAN MICRA IV (K13K, K13KK) (2010)](https://baterias.com/gb/car-batteries/nissan/micra-iv-k13k-k13kk) - [SUZUKI SWIFT V (AZ) (2017)](https://baterias.com/gb/car-batteries/suzuki/swift-v-az) - [HONDA CIVIC VIII Hatchback (FN, FK) (2005)](https://baterias.com/gb/car-batteries/honda/civic-viii-hatchback-fn-fk) - [DAIHATSU GRAN MOVE (G3) (1996)](https://baterias.com/gb/car-batteries/daihatsu/gran-move-g3) - [SUZUKI DZIRE (2013)](https://baterias.com/gb/car-batteries/suzuki/dzire) - [TOYOTA MATRIX (\_E14\_) (2008)](https://baterias.com/gb/car-batteries/toyota/matrix-_e14) - [TOYOTA VISTA / CAMRY Saloon (\_V3\_, \_V4\_) (1990)](https://baterias.com/gb/car-batteries/toyota/vista-camry-saloon-_v3_-_v4) - [HONDA CR-V V (RW\_, RT\_) (2016)](https://baterias.com/gb/car-batteries/honda/cr-v-v-rw_-rt) - [HONDA CIVIC V Hatchback (EG) (1991)](https://baterias.com/gb/car-batteries/honda/civic-v-hatchback-eg) - [MAZDA MX-5 IV (ND\_\_) (2015)](https://baterias.com/gb/car-batteries/mazda/mx-5-iv-nd) - [DAIHATSU TERIOS (J2\_, F7\_\_) (2005)](https://baterias.com/gb/car-batteries/daihatsu/terios-j2_-f7) ## Equivalent batteries - [TUDOR TB456](https://baterias.com/gb/battery-tudor-tb456-45ah-330a) - [EXIDE EB456](https://baterias.com/gb/battery-exide-eb456-12v-45ah-300a) ## Reviews - **Average rating**: 4.79 / 5 (37 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*