# Car battery Long 46B24L-MF 12V 45Ah ![Car battery Long 46B24L-MF 12V 45Ah](https://baterias.com/1611-home_default/battery-long-46b24l-mf-12v-45ah.jpg) > Long 46B24L-MF car battery 12V 45Ah. Starting Series range. Dimensions 236Γ—127Γ—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-46b24l-mf-12v-45ah - **Language**: en-GB - **Brand**: LONG - **Reference**: BCOM-LONG-46B24L-MF - **MPN**: 46B24L-MF - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | LONG | | Reference | 46B24 L-MF | | Model | Starting Series | | Voltage (V) | 12 V | | Largo | 236 cm | | Ancho | 127 cm | | Alto | 225 cm | | Peso | 9 kg | | Capacity (C20) | 45 Ah (c20) | | Capacity (C5) | 36 Ah (c5) | ## Quick description **Long 46B24L-MF 12V 45Ah** 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 45 Ah C20 πŸ“ Dimensions 236Γ—127Γ—225 mm βš–οΈ Weight 9 kg 🏷️ Model Starting Series ## Description ## Car battery Long 46B24L-MF Starting Series 45Ah 12V 12*V* Voltage 45*Ah* Capacity 9*kg* Weight The **Long 46B24L-MF car battery** is rated at **12 V**, **45 Ah** from the **Starting Series** range, and is designed for passenger cars with conventional starting, without a Start-Stop system. It measures 236 Γ— 127 Γ— 225 mm, the format sought by anyone replacing a 45 Ah battery in cars. - Direct replacement for the original battery in size and terminals. - Original-equipment build quality without the dealership price. - Reliable cold starts, even after weeks without driving. - Designed to last several years under normal daily use. ### What the Long 46B24L-MF is for Designed for passenger cars with conventional starting, without a Start-Stop system, the Long 46B24L-MF is the direct replacement when your vehicle uses a 45 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 9 kg. ### Size, terminals and hold-down of the Long 46B24L-MF The Long 46B24L-MF is made in the 236 Γ— 127 Γ— 225 mm format and weighs 9 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. ### 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. ### The Long 46B24L-MF within the Starting Series range The **Starting Series** is the Long range the 46B24L-MF 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. ### Care and maintenance 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 46B24L-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. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### How do I change this battery step by step? 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 many years does this battery last? Expected lifespan of the Long 46B24L-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 dimensions of the Long 46B24L-MF battery? Dimensions (length Γ— width Γ— height) are 236Γ—127Γ—225 mm β€” also written as 236x127x225 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 46B24L-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 46B24L-MF typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Long 46B24L-MF? 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· 2026-09-30*