agm battery meaning in Chinese

I believe that many car owners will hear the term "AGM battery" when they go to replace the car's battery.AGM batteries are generally used in cars with engine start-stop function, and AGM batteries cannot be mixed with ordinary lead-acid batteries.So what is the sacred AGM battery? Why do all cars with engine start and stop use AGM batteries?

What does AGM battery mean?

The AGM battery is a valve-regulated sealed battery that uses a glass fiber separator (AGM). Compared with ordinary batteries, AGM batteries have: longer service life, higher capacitance stability, better low-temperature reliability; and because their acid is 100% sealed, no gas is discharged during work, so it is environmentally friendly Pollution is small, and the risk of battery explosion in the event of an accident is also small.

Why do cars with engine start-stop function use AGM batteries?

Because the AGM battery can cope with frequent high-current start-ups, its fast charge-discharge speed and cycle charging capacity 3 times higher than that of ordinary batteries, can perfectly fit the working conditions of the engine start-stop system. Moreover, the general car with engine start-stop technology basically has a kinetic energy recovery system. The short and frequent high-current charging is unbearable for ordinary batteries, so AGM batteries have almost become synonymous with engine start-stop systems.

PS:In fact, not all cars with engine start-stop systems use AGM batteries. In addition to the AGM battery, there is also an EFB battery. Since AGM is a lean-liquid battery, it will avoid high temperatures when used, so it is generally installed in the trunk; while EFB is a rich-liquid battery, which can be installed in the engine compartment without fear of high temperatures.