# Marine battery Exide ER660 12V 140Ah 750A ![Marine battery Exide ER660 12V 140Ah 750A](https://baterias.com/1843-home_default/battery-exide-er660-12v-140ah-750a.jpg) > Exide ER660 marine battery 12V 140Ah 750A. MARINA DUAL ER range. Dimensions 513×189×223 mm, + terminal on the left. Cranking and house duties. **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [EXIDE](https://baterias.com/gb/exide) - **Canonical URL**: https://baterias.com/gb/battery-exide-er660-12v-140ah-750a - **Language**: en-GB - **Brand**: EXIDE - **Reference**: BCOM-EXIDE-ER660 - **EAN**: 3661024036429 - **MPN**: ER660 - **Price**: 238,10 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | EXIDE | | Reference | ER660 | | Model | EXIDE MARINA DUAL ER | | Voltage (V) | 12 V | | Largo | 513 cm | | Ancho | 189 cm | | Alto | 223 cm | | Peso | 37.3 kg | | Tecnología | Lead-acid | | EAN | 3661024036429 | | Terminal layout | Positive terminal on the left | | Terminal type | 1 | | Hold down | B0 | | Cold cranking amps (EN) | 750 A | | Capacity (C20) | 140 Ah (c20) | ## Quick description **Exide ER660 12V 140Ah 750A** is a marine battery, vibration- and deep-discharge resistant, suitable both for outboard engine starting and for onboard auxiliary services (navigation lights, GPS, sonar, fridge). Sealed and maintenance-free. ### Why this marine battery? - **Marine design** built for boat swell and vibration - **Dual function** starts the engine and powers onboard services - **Sealed and safe** maintenance-free even when the boat rolls 🔌 Voltage 12 V ⚡ Capacity 140 Ah C20 🔋 Cold cranking 750 A EN-1 📏 Dimensions 513×189×223 mm ⚙️ Technology Lead-acid 🧭 Polarity Positive on the left ⚖️ Weight 37,3 kg 🏷️ Model EXIDE MARINA DUAL ER ## Description ## Marine battery Exide ER660 Marina Dual Er 140Ah 750A 12V 12*V* Voltage 140*Ah* Capacity 750*A* Cold cranking 37.30*kg* Weight With **140 Ah** at **12 V** and **750 A** of cold cranking current (EN), the **Exide ER660** from the **Marina Dual Er** range is built for motor and sailing boats, both for engine starting and onboard services. It replaces the original battery without adaptation in boats with a 513 × 189 × 223 mm format: same 140 Ah capacity and the positive terminal on the left. - Powers onboard services: lights, sounder, GPS, fridge. - Tolerates the daily cycling of a boat in season. - Conventional lead-acid: the most proven and economical technology. - Reinforced case against vibration and swell. ### What the Exide ER660 is for With 140 Ah, the Exide ER660 covers motor and sailing boats, both for engine starting and onboard services. At the end of the season, charge it fully before winter storage. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 37.30 kg, 1 terminals and B0 hold-down. ### Dimensions, polarity and mounting The Exide ER660 is made in the 513 × 189 × 223 mm format and weighs 37.30 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 a B0 hold-down and 1 terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters. ### 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. ### The Exide ER660: Marina Dual Er range and conventional lead-acid technology The ER660 is part of the Exide **Marina Dual Er** 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. ### Usage and maintenance tips As a service battery, avoid routine discharges below 50% to extend its cycle life. On batteries with filler caps, check the electrolyte level and top up only with distilled water. ### Manufacturer's warranty The Exide ER660 comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered. ### Shipping, delivery and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### How is the Exide ER660 battery installed in the vehicle? In most boats 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 boats 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 ER660 model? Expected lifespan of the Exide ER660 is 4 to 6 years in regular boat 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 ER660 model? Dimensions (length × width × height) are 513×189×223 mm — also written as 513x189x223 mm — following the European DIN standard. Always measure the space in your boat before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### Does this battery fit my boat? 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 ER660 fits 6 verified vehicle versions in our database. ### What are the equivalents of the ER660 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 boats. See the "Equivalents" section to view recommended options at the same performance level. ## Compatible vehicles This battery fits 6 vehicles. Most searched: - [Bavaria Yachtbau GmbH Bavaria (1990)](https://baterias.com/gb/boat-batteries/bavaria-yachtbau-gmbh/bavaria) - [Dufour Yachts Dufour (1990)](https://baterias.com/gb/boat-batteries/dufour-yachts/dufour) - [Bavaria Yachtbau GmbH 38 Cruiser (1990)](https://baterias.com/gb/boat-batteries/bavaria-yachtbau-gmbh/38-cruiser) - [Wauquiez Centurion (1990)](https://baterias.com/gb/boat-batteries/wauquiez/centurion) - [Najadvarvet AB Najad (1990)](https://baterias.com/gb/boat-batteries/najadvarvet-ab/najad) - [Wauquiez Saloon (1990)](https://baterias.com/gb/boat-batteries/wauquiez/saloon) ## Equivalent batteries - [VARTA LFD140](https://baterias.com/gb/battery-varta-lfd140-12v-140ah-800a) - [EXIDE ET950](https://baterias.com/gb/battery-exide-et950-12v-135ah-700a) - [EXIDE EN900](https://baterias.com/gb/battery-exide-en900-12v-140ah-800a) ## Reviews - **Average rating**: 4.76 / 5 (27 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*