The health state of the battery is expressed by SOH, which is the full name of State of Health. If the battery is regarded as a container for storing electricity, SOC refers to how much available electric energy is stored in the container at a certain time (available electric energy here refers to the electric energy that can be used through discharge), while SOH is generally understood as how much the volume (not physical volume) of the container for storing available electric energy remains, that is, how much available electric energy it can store.

There has always been such a voice in the battery industry: that the quality of life of lead-acid batteries in recent years is not as good as before, especially in winter, it is even less durable. Although many manufacturers say that their batteries can be used for two or three years without any problems, in practice, there are still many users who feel that the batteries need to be replaced in about a year and a half. Is the life of lead-acid batteries really becoming more and more useless? How long is the service life of a normal battery? To answer this question, we must first understand a premise, how to define the service life of lead-acid batteries.

The length of the service life of the car battery depends on the structure and quality of the battery on the one hand, and is closely related to the daily maintenance on the other hand.The following aspects are what we need to pay attention to.