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AGM, EFB Start-stop Battery Original Car Battery Identification

AGM and EFB batteries have gradually become familiar to everyone with the continuous updating of automotive technology, but the use of AGM and EFB batteries has not been well known by consumers. The AGM battery for start stop is mostly assembled on European brand vehicles, and EFB batteries are mostly assembled on Japanese brand vehicles. When it comes to AGM and EFB batteries, we have to say the car start-stop system. The start-stop system means that the engine starts and stops automatically when the vehicle stops temporarily (for example, waiting for a red light) during the driving process. A system that automatically restarts the engine when it's time to move on.


1. Reasons for using AGM battery for start stop


Why use AGM battery? Because when the engine starts, due to the need to ignite and power the starter motor, the on-board battery must be capable of high-current discharge performance; because the start-stop system frequently restarts the engine, the battery supports frequent high-current discharge; when the hybrid system provides power to the wheels , the battery needs to provide energy support; it can meet the needs of electrical equipment such as in-car audio and lighting; when the car charger charges the battery, the battery must have a strong charge acceptance performance; AGM and EFB batteries can meet the needs of start-stop functions. With the widespread use of start-stop technology, it is particularly important to be familiar with the use of vehicles and batteries with start-stop functions.


2. AGM battery for start stop used in European cars


The European brand vehicles on sale use the most start-stop batteries for AGM cars, such as Mercedes-Benz, BMW, Audi, Porsche, Volkswagen, MG and other models. Many European high-end cars do not have the start-stop function, but they are equipped with the most AGM batteries. We have already explained why. Let’s focus on knowing whether the original car is equipped with AGM batteries. We use Mercedes-Benz and BMW series, equipped with A comparison is made between the flooded battery and the lean VRLA valve-controlled and AGM battery.


Mercedes-Benz original car battery, ordinary flooded battery 100A starting current is 760, VRLA valve control, AGM battery 95A starting current 850. BMW original car battery, ordinary flooded battery 90A starting current is 720, VRLA valve control, AGM battery 90A starting current 900.


The easiest way to identify: AGM (liquid absorbent glass fiber board) or VRLA (valve-regulated sealed lead-acid battery) on the label is an AGM battery. AGM battery for start stop has different labels on AGM batteries due to different original car manufacturers and battery manufacturers. Some original car batteries are marked with the words AGM, and some are marked with the words VRLA.

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