What does AGM battery mean in cars?
2 Answers
AGM batteries are an early-invented and widely used type of storage battery. Here is information about AGM batteries: 1. AGM stands for Absorbent Glass Mat battery technology. (1) It can effectively prevent electrolyte stratification, thereby increasing the deep cycle life (up to 3 times that of ordinary batteries) and service life of the battery; (2) Due to the lower resistance of AGM separators, they exhibit better low-temperature performance. 2. Represented by some Japanese battery companies. AGM batteries belong to the VRLA (Valve-Regulated Lead-Acid) battery category. Another type of battery that also falls under VRLA batteries is the GEL type. In the 1990s, the development of telecommunications and power industries led to rapid growth in AGM batteries, resulting in high market share, while GEL batteries remained relatively low.
AGM batteries are actually Absorbent Glass Mat batteries. From my experience in auto repair, their biggest feature is that the electrolyte inside is absorbed and fixed by glass fiber mats, unlike old-style batteries where the liquid sloshes around, making them virtually leak-proof and super safe. They have strong charging acceptance, allowing for quick recharging, making them ideal for vehicles with start-stop functions—frequent starts and stops don't damage the battery. In winter, they provide stable discharge even in low temperatures, ensuring more reliable engine starts. Maintenance is almost hassle-free, with a typical lifespan of five years or more. Nowadays, many high-end and new car models come standard with these batteries, as their performance far surpasses that of regular lead-acid batteries.
