# Car battery Long 145G51 12V 150Ah ![Car battery Long 145G51 12V 150Ah](https://baterias.com/1361-home_default/battery-long-145g51-12v-150ah.jpg) > Long 145G51 car battery 12V 150Ah. Starting Series range. Dimensions 505Γ—220Γ—257 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-145g51-12v-150ah - **Language**: en-GB - **Brand**: LONG - **Reference**: BCOM-LONG-145G51 - **MPN**: 145G51 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | LONG | | Reference | 145G51 | | Model | Starting Series | | Voltage (V) | 12 V | | Largo | 505 cm | | Ancho | 220 cm | | Alto | 257 cm | | Peso | 25.8 kg | | Capacity (C20) | 150 Ah (c20) | | Capacity (C5) | 120 Ah (c5) | ## Quick description **Long 145G51 12V 150Ah** is a passenger car battery with factory-guaranteed cranking power and extended service life. OEM quality at white-label prices: calcium-silver grids, low self-discharge and compatible with all modern electrical systems. ## 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 150 Ah C20 πŸ“ Dimensions 505Γ—220Γ—257 mm βš–οΈ Weight 25,8 kg 🏷️ Model Starting Series ## Description ## Car battery Long 145G51 Starting Series 150Ah 12V 12*V* Voltage 150*Ah* Capacity 25.80*kg* Weight The **Long 145G51** from the **Starting Series** range delivers **150 Ah** at **12 V**: the usual specification for passenger cars with conventional starting, without a Start-Stop system. Measuring 505 Γ— 220 Γ— 257 mm, it is the direct replacement for cars fitted from the factory with a 150 Ah battery of this format. - Low self-discharge: copes with long stops without losing charge. - Designed to last several years under normal daily use. - Original-equipment build quality without the dealership price. - Direct replacement for the original battery in size and terminals. ### Will it fit your current battery tray? It has external dimensions of 505 Γ— 220 Γ— 257 mm and weighs 25.80 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 the Long 145G51 is for Designed for passenger cars with conventional starting, without a Start-Stop system, the Long 145G51 is the direct replacement when your vehicle uses a 150 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 25.80 kg. ### The Long 145G51 within the Starting Series range Within the Long catalogue, the **Starting Series** series groups the references designed for this use. The 145G51 is the 150 Ah model of that family, with the same performance as its siblings in other sizes. ### Why choose Long batteries Long (Kung Long Batteries) is one of the world's largest manufacturers of sealed VRLA batteries. Its AGM and GEL series for UPS, mobility, alarms and cycling are found in equipment worldwide as original equipment. We guarantee that every Long arrives new, charged and with the manufacturer's full warranty. ### Manufacturer's warranty The Long 145G51 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. ### Usage and maintenance tips 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. Avoid leaving lights or accessories on with the engine off: most batteries fail not through defects but through repeated deep discharges. ### When you get it and how to return it 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 145G51 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 145G51 battery last? Expected lifespan of the Long 145G51 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 145G51 battery? Dimensions (length Γ— width Γ— height) are 505Γ—220Γ—257 mm β€” also written as 505x220x257 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 145G51 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 145G51 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Long 145G51? 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· 2026-10-11*