# Car battery Long 75D31R 12V 70Ah ![Car battery Long 75D31R 12V 70Ah](https://baterias.com/1636-home_default/battery-long-75d31r-12v-70ah.jpg) > Long 75D31R car battery 12V 70Ah. Starting Series range. Dimensions 305Γ—173Γ—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-75d31r-12v-70ah - **Language**: en-GB - **Brand**: LONG - **Reference**: BCOM-LONG-75D31R - **MPN**: 75D31R - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | LONG | | Reference | 75D31 R | | Model | Starting Series | | Voltage (V) | 12 V | | Largo | 305 cm | | Ancho | 173 cm | | Alto | 225 cm | | Peso | 16.3 kg | | Capacity (C20) | 70 Ah (c20) | | Capacity (C5) | 60 Ah (c5) | ## Quick description **Long 75D31R 12V 70Ah** is a starter battery with OEM-equivalent quality, designed for modern passenger cars. Delivers reliable cold-cranks even after weeks of inactivity and supports stable auxiliary loads (lights, 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 70 Ah C20 πŸ“ Dimensions 305Γ—173Γ—225 mm βš–οΈ Weight 16,3 kg 🏷️ Model Starting Series ## Description ## Car battery Long 75D31R Starting Series 70Ah 12V 12*V* Voltage 70*Ah* Capacity 16.30*kg* Weight The **Long 75D31R** from the **Starting Series** range delivers **70 Ah** at **12 V**: the usual specification for passenger cars with conventional starting, without a Start-Stop system. Measuring 305 Γ— 173 Γ— 225 mm, it is the direct replacement for cars fitted from the factory with a 70 Ah battery of this format. - Low self-discharge: copes with long stops without losing charge. - 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. ### What the Long 75D31R is for Designed for passenger cars with conventional starting, without a Start-Stop system, the Long 75D31R is the direct replacement when your vehicle uses a 70 Ah battery of this format. Before buying, compare dimensions, terminals and capacity with the battery you are replacing. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 16.30 kg. ### Will it fit your current battery tray? In terms of format, the Long 75D31R measures 305 Γ— 173 Γ— 225 mm (length Γ— width Γ— height) and weighs 16.30 kg. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change. ### Why choose Long batteries 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. We guarantee that every Long arrives new, charged and with the manufacturer's full warranty. ### The Long 75D31R within the Starting Series range The **Starting Series** is the Long range the 75D31R belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle. ### Usage and maintenance tips 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. ### Warranty and coverage The Long 75D31R 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. ### Shipping, delivery and returns 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 is the Long 75D31R 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. ### How long does the Long 75D31R battery last? Expected lifespan of the Long 75D31R 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 75D31R battery? Dimensions (length Γ— width Γ— height) are 305Γ—173Γ—225 mm β€” also written as 305x173x225 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. ### Will the Long 75D31R 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 75D31R typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which interchangeable batteries are there for this one? 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€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-05*