# Car battery Exide EC904 12V 90Ah 680A ![Car battery Exide EC904 12V 90Ah 680A](https://baterias.com/5505-home_default/battery-exide-ec904-12v-90ah-680a.jpg) > Exide EC904 car battery 12V 90Ah 680A. CLASSIC range. Dimensions 306×173×222 mm, + terminal on the right. Check fitment by plate. **Category:** [Classic Car Batteries](https://baterias.com/gb/batteries-for-classic-cars) → [EXIDE](https://baterias.com/gb/exide) - **Canonical URL**: https://baterias.com/gb/battery-exide-ec904-12v-90ah-680a - **Language**: en-GB - **Brand**: EXIDE - **Reference**: BCOM-EXIDE-EC904 - **EAN**: 3661024034753 - **MPN**: EC904 - **Price**: 103,70 € - **Stock**: In stock ## Technical specifications | Feature | Value | |---|---| | Brand | EXIDE | | Reference | EC904 | | Model | EXIDE CLASSIC | | Voltage (V) | 12 V | | Largo | 306 cm | | Ancho | 173 cm | | Alto | 222 cm | | Peso | 19.9 kg | | Tecnología | Lead-acid | | EAN | 3661024034753 | | Terminal layout | Positive terminal on the right | | Cold cranking amps (EN) | 680 A | | Capacity (C20) | 90 Ah (c20) | | Case type | D31 | ## Quick description **Exide EC904 12V 90Ah 680A** 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 90 Ah C20 🔋 Cold cranking 680 A EN-1 📏 Dimensions 306×173×222 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the right ⚖️ Weight 19,9 kg 🏷️ Model EXIDE CLASSIC ## Description ## Classic car battery Exide EC904 Classic 90Ah 680A 12V 12*V* Voltage 90*Ah* Capacity 680*A* Cold cranking 19.90*kg* Weight The **Exide EC904** from the **Classic** range is rated at **12 V**, **90 Ah** and **680 A** of cold cranking current (EN), a common choice for classic and vintage cars with their original electrical system. It replaces the original battery without adaptation in classic cars with a 306 × 173 × 222 mm format: same 90 Ah capacity and the positive terminal on the right. - Conventional lead-acid: the most proven and economical technology. - Respects the vehicle's original electrical system. - Format and terminals compatible with period battery trays. - Robust construction against vibration. ### What the Exide EC904 is for With 90 Ah, the Exide EC904 starts classic engines without stressing the rest of the installation. Check size and terminals before ordering. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 19.90 kg. ### The Exide EC904: Classic range and conventional lead-acid technology The EC904 is part of the Exide **Classic** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour. ### Will it fit your current battery tray? In terms of format, the Exide EC904 measures 306 × 173 × 222 mm (length × width × height) and weighs 19.90 kg. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### Why choose Exide batteries With more than a century of history, Exide Technologies manufactures automotive, marine, motorcycle and industrial batteries in Europe. Its presence as original equipment on assembly lines vouches for the quality of every reference. We guarantee that every Exide arrives new, charged and with the manufacturer's full warranty. ### How to make it last longer On batteries with filler caps, check the electrolyte level and top up only with distilled water. A classic car often stands for long spells: a trickle charger connected in the garage is the best investment for the battery. ### Official warranty The Exide EC904 comes with the **manufacturer's official warranty** against manufacturing defects. The warranty does not cover deep discharge through inactivity: in a classic, a trickle charger is the best protection. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 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 **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### How do I fit the EC904 model in my car? 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. ### How long does the Exide EC904 battery last? Expected lifespan of the Exide EC904 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 size is this battery? Dimensions (length × width × height) are 306×173×222 mm — also written as 306x173x222 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. ### Will the Exide EC904 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 EC904 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Exide EC904? 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. ## Equivalent batteries - [TUDOR TC904](https://baterias.com/gb/battery-tudor-tc904-12v-90ah-680a) ## Reviews - **Average rating**: 4.77 / 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 · 2026-09-30*