# Marine battery Exide ER650 12V 142Ah 850A ![Marine battery Exide ER650 12V 142Ah 850A](https://baterias.com/1842-home_default/battery-exide-er650-12v-142ah-850a.jpg) > Exide ER650 marine battery 12V 142Ah 850A. MARINA DUAL ER range. Dimensions 349Γ—175Γ—290 mm, + terminal on the left. Cranking and house duties. **Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) β†’ [EXIDE](https://baterias.com/gb/exide) - **Canonical URL**: https://baterias.com/gb/battery-exide-er650-12v-142ah-850a - **Language**: en-GB - **Brand**: EXIDE - **Reference**: BCOM-EXIDE-ER650 - **EAN**: 3661024036221 - **MPN**: ER650 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | EXIDE | | Reference | ER650 | | Model | EXIDE MARINA DUAL ER | | Voltage (V) | 12 V | | Largo | 349 cm | | Ancho | 175 cm | | Alto | 290 cm | | Peso | 35.1 kg | | TecnologΓ­a | Lead-acid | | EAN | 3661024036221 | | Terminal layout | Positive terminal on the left | | Terminal type | 1 | | Hold down | B0 | | Cold cranking amps (EN) | 850 A | | Capacity (C20) | 142 Ah (c20) | ## Quick description **Exide ER650 12V 142Ah 850A** 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 πŸ”Œ Voltage 12 V ⚑ Capacity 142 Ah C20 πŸ”‹ Cold cranking 850 A EN-1 πŸ“ Dimensions 349Γ—175Γ—290 mm βš™οΈ Technology Lead-acid 🧭 Polarity Positive on the left βš–οΈ Weight 35,1 kg 🏷️ Model EXIDE MARINA DUAL ER ## Description ## Marine battery Exide ER650 Marina Dual Er 142Ah 850A 12V 12*V* Voltage 142*Ah* Capacity 850*A* Cold cranking 35.10*kg* Weight The **Exide ER650 marine battery** offers **12 V**, **142 Ah** and **850 A** of cold cranking current (EN) from the **Marina Dual Er** range with conventional lead-acid technology, designed for motor and sailing boats, both for engine starting and onboard services. It replaces the original battery without adaptation in boats with a 349 Γ— 175 Γ— 290 mm format: same 142 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 ER650 is for On board, the Exide ER650 provides 142 Ah with a case reinforced against vibration and swell. Keep the terminals clean and protected from salt humidity. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 35.10 kg, 1 terminals and B0 hold-down. ### Size, terminals and hold-down of the Exide ER650 In terms of format, the Exide ER650 measures 349 Γ— 175 Γ— 290 mm (length Γ— width Γ— height) and weighs 35.10 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. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### Exide: the maker behind the ER650 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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### The Exide ER650: Marina Dual Er range and conventional lead-acid technology Within the Exide catalogue, the **Marina Dual Er** series groups the references designed for this use. The ER650 is the 142 Ah model of that family, with the same performance as its siblings in other sizes. 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. ### Care and maintenance At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up. As a service battery, avoid routine discharges below 50% to extend its cycle life. ### Manufacturer's warranty The Exide ER650 comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered. ### When you get it and how to return it Orders placed **before [[ks:cutoff]]** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have **[[ks:return_days]] days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships. ## Frequently asked questions ### How do I change this battery step by step? 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). 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 ER650 model? Expected lifespan of the Exide ER650 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 ER650 model? Dimensions (length Γ— width Γ— height) are 349Γ—175Γ—290 mm β€” also written as 349x175x290 mm β€” 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. ### Is the ER650 valid for my vehicle? 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 β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The ER650 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Exide ER650? 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 β€” 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. ## Reviews - **Average rating**: 4.74 / 5 (32 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-07*