# Car battery Long 65D31R 12V 75Ah ![Car battery Long 65D31R 12V 75Ah](https://baterias.com/1635-home_default/battery-long-65d31r-12v-75ah.jpg) > Long 65D31R car battery 12V 75Ah. Starting Series range. Dimensions 302Γ—171Γ—225 mm. Check fitment by plate. **Category:** [Car Batteries](https://baterias.com/gb/car-batteries) β†’ [LONG](https://baterias.com/gb/long) - **Canonical URL**: https://baterias.com/gb/battery-long-65d31r-12v-75ah - **Language**: en-GB - **Brand**: LONG - **Reference**: BCOM-LONG-65D31R - **MPN**: 65D31R - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | LONG | | Reference | 65D31 R | | Model | Starting Series | | Voltage (V) | 12 V | | Largo | 302 cm | | Ancho | 171 cm | | Alto | 225 cm | | Peso | 12.5 kg | | Capacity (C20) | 75 Ah (c20) | | Capacity (C5) | 60 Ah (c5) | ## Quick description **Long 65D31R 12V 75Ah** 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 πŸ”Œ Voltage 12 V ⚑ Capacity 75 Ah C20 πŸ“ Dimensions 302Γ—171Γ—225 mm βš–οΈ Weight 12,5 kg 🏷️ Model Starting Series ## Description ## Car battery Long 65D31R Starting Series 75Ah 12V 12*V* Voltage 75*Ah* Capacity 12.50*kg* Weight The **Long 65D31R car battery** is rated at **12 V**, **75 Ah** from the **Starting Series** range, and is designed for passenger cars with conventional starting, without a Start-Stop system. Measuring 302 Γ— 171 Γ— 225 mm, it is the direct replacement for cars fitted from the factory with a 75 Ah battery of this format. - Designed to last several years under normal daily use. - Stable voltage for the vehicle electronics (ECU, sensors, climate control). - Original-equipment build quality without the dealership price. - Direct replacement for the original battery in size and terminals. ### What the Long 65D31R is for With 75 Ah, the Long 65D31R is sized for passenger cars with conventional starting, without a Start-Stop system. It is a direct replacement for the original battery as long as dimensions and terminals match. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 12.50 kg. ### Dimensions, polarity and mounting The Long 65D31R is made in the 302 Γ— 171 Γ— 225 mm format and weighs 12.50 kg. 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. ### The Long 65D31R within the Starting Series range Within the Long catalogue, the **Starting Series** series groups the references designed for this use. The 65D31R is the 75 Ah model of that family, with the same performance as its siblings in other sizes. ### What Long does differently Long batteries combine large-scale production with ISO quality standards and a batch-to-batch consistency that has made them the de-facto standard in backup systems and electric mobility. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Official warranty The Long 65D31R 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. ### How to make it last longer Avoid leaving lights or accessories on with the engine off: most batteries fail not through defects but through repeated deep discharges. 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. ### Delivery times 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 Long 65D31R 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 (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 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 65D31R model? Expected lifespan of the Long 65D31R is 4 to 7 years in regular use (depends on technology and climate). 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 Long 65D31R battery? Dimensions (length Γ— width Γ— height) are 302Γ—171Γ—225 mm β€” also written as 302x171x225 mm β€” 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. ### 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 β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The 65D31R typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Long 65D31R? 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 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 β€” automotive battery specialists since 2015. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-08*