# Car battery Long 55D23R-MF 12V 55Ah ![Car battery Long 55D23R-MF 12V 55Ah](https://baterias.com/1625-home_default/battery-long-55d23r-mf-12v-55ah.jpg) > Long 55D23R-MF car battery 12V 55Ah. Starting Series range. Dimensions 232Γ—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-55d23r-mf-12v-55ah - **Language**: en-GB - **Brand**: LONG - **Reference**: BCOM-LONG-55D23R-MF - **MPN**: 55D23R-MF - **Last updated**: 2026-08-06 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | LONG | | Reference | 55D23 R-MF | | Model | Starting Series | | Voltage (V) | 12 V | | Largo | 232 cm | | Ancho | 171 cm | | Alto | 225 cm | | Peso | 12.5 kg | | Capacity (C20) | 55 Ah (c20) | | Capacity (C5) | 48 Ah (c5) | ## Quick description **Long 55D23R-MF 12V 55Ah** 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 55 Ah C20 πŸ“ Dimensions 232Γ—171Γ—225 mm βš–οΈ Weight 12,5 kg 🏷️ Model Starting Series ## Description ## Car battery Long 55D23R-MF Starting Series 55Ah 12V 12*V* Voltage 55*Ah* Capacity 12.50*kg* Weight The **Long 55D23R-MF car battery** is rated at **12 V**, **55 Ah** from the **Starting Series** range, and is designed for passenger cars with conventional starting, without a Start-Stop system. Its 232 Γ— 171 Γ— 225 mm make it the exact replacement for the 55 Ah battery fitted as standard to many cars. - 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 55D23R-MF is for With 55 Ah, the Long 55D23R-MF 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. ### Will it fit your current battery tray? It has external dimensions of 232 Γ— 171 Γ— 225 mm 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. ### 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. All the Long batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### The Long 55D23R-MF within the Starting Series range The 55D23R-MF is part of the Long **Starting Series** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. ### How to make it last longer 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. Keep the terminals clean and tight, and check that the resting voltage does not drop below 12.4 V: below that it is time to recharge. ### Manufacturer's warranty The Long 55D23R-MF 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. ### When you get it and how to return it Order **before 6:00 pm** 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 **14 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 do I fit the 55D23R-MF 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 our blog. 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’). ### How many years does this battery last? Expected lifespan of the Long 55D23R-MF 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 measurements of the 55D23R-MF model? Dimensions (length Γ— width Γ— height) are 232Γ—171Γ—225 mm β€” also written as 232x171x225 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 55D23R-MF 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 55D23R-MF typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the 55D23R-MF 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 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 2012. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-29*