# Car battery Kronobat SD-91.1T 12V 91Ah 740A ![Car battery Kronobat SD-91.1T 12V 91Ah 740A](https://baterias.com/3278-home_default/best-price-battery-12v-91ah-sd-91_1t.jpg) > Kronobat SD-91.1T car battery 12V 91Ah 740A. STANDARD range. Dimensions 306×173×225 mm, + terminal on the left. Check fitment by plate. **Category:** [Car Batteries](https://baterias.com/gb/car-batteries) → [KRONOBAT](https://baterias.com/gb/kronobat) - **Canonical URL**: https://baterias.com/gb/best-price-battery-12v-91ah-sd-91_1t - **Language**: en-GB - **Brand**: KRONOBAT - **Reference**: BCOM-KRONOBAT-SD-91.1T - **MPN**: SD-91.1T - **Price**: 91,60 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Reference | SD-91.1 T | | Model | STANDARD | | Voltage (V) | 12 V | | Largo | 306 cm | | Ancho | 173 cm | | Alto | 225 cm | | Peso | 21.7 kg | | Tecnología | Lead-acid | | Terminal layout | Positive terminal on the left | | Terminal type | 1 | | Cold cranking amps (EN) | 740 A | | Capacity (C20) | 91 Ah (c20) | ## Quick description **Kronobat SD-91.1T 12V 91Ah 740A** is a ready-to-use passenger car battery, sealed and maintenance-free. Delivers the cranking amps the engine needs in cold weather and keeps stable voltage for modern car loads (ECU, sensors, 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 91 Ah C20 🔋 Cold cranking 740 A EN-1 📏 Dimensions 306×173×225 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the left ⚖️ Weight 21,7 kg 🏷️ Model STANDARD ## Description ## Car battery Kronobat SD-91.1T Standard 91Ah 740A 12V 12*V* Voltage 91*Ah* Capacity 740*A* Cold cranking 21.70*kg* Weight The **Kronobat SD-91.1T** from the **Standard** range delivers **91 Ah** and **740 A** of cold cranking current (EN) at **12 V**: the usual specification for passenger cars with conventional starting, without a Start-Stop system. It replaces the original battery without adaptation in cars with a 306 × 173 × 225 mm format: same 91 Ah capacity and the positive terminal on the left. - Direct replacement for the original battery in size and terminals. - Original-equipment build quality without the dealership price. - Conventional lead-acid: the most proven and economical technology. - Reliable cold starts, even after weeks without driving. ### What the Kronobat SD-91.1T is for The Kronobat SD-91.1T covers the needs of passenger cars with conventional starting, without a Start-Stop system: reliable starting, stable voltage for the electronics and a service life of several years in daily use. Check that it matches your current battery in size and terminal position. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 21.70 kg and 1.0 terminals. ### Size, terminals and hold-down of the Kronobat SD-91.1T The Kronobat SD-91.1T is made in the 306 × 173 × 225 mm format and weighs 21.70 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses 1.0 terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### What Kronobat does differently With Kronobat we offer an own-brand alternative without compromising on quality: European manufacturing, original-equipment controls and the direct backing of baterias.com for warranty and advice. We guarantee that every Kronobat arrives new, charged and with the manufacturer's full warranty. ### The Kronobat SD-91.1T: Standard range and conventional lead-acid technology The SD-91.1T is part of the Kronobat **Standard** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. In a conventional battery the electrolyte is liquid and the lead plates are immersed in it. It is a mature, economical and easily recycled technology, ideal for starting vehicles in normal use. ### How to make it last longer In normal daily use the alternator keeps the battery charged; if the car stands for weeks, a maintenance charge once a month prevents deep discharge. Keep the terminals clean and tight, and check that the resting voltage does not drop below 12.4 V: below that it is time to recharge. ### Official warranty The Kronobat SD-91.1T comes with the **manufacturer's official warranty** against manufacturing defects; the exact period is stated in the brand's conditions. If it fails through a defect within the period, we replace it free of charge. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### How is the Kronobat SD-91.1T 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 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 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 SD-91.1T model? Expected lifespan of the Kronobat SD-91.1T 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 measurements of the SD-91.1T model? Dimensions (length × width × height) are 306×173×225 mm — also written as 306x173x225 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 polarity does the Kronobat SD-91.1T battery have? 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 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 SD-91.1T typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the SD-91.1T model? 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. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-27*