How long is the real life of lead-acid battery

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.

1. The number of cycles and life of lead-acid battery charge and discharge
Speaking of "lifetime", of course, it is a concept of time, but when it comes to lead-acid batteries, it is more accurate to use the number of times the battery is charged and discharged repeatedly. For example, the number of cycles marked 400~600 on the description of a certain brand of battery product means that the entire life cycle of the battery can complete the charge-discharge cycle within the above range.

There are two things to note here:
First, due to the complexity of the actual use environment of the battery, the actual number of cycles of charge and discharge may not reach the nominal value.
Second, the number of cycles refers to the number of full cycles, not the number of charges. It is the process of the battery from zero charge to full charge (or vice versa), which is a cycle. For example, if the vehicle is fully charged with 50% remaining power, it is only 0.5 cycles.


2. How long will the new lead-acid battery last?
Generally speaking, a 12V lead-acid battery is designed to have a floating charge life of 5-8 years, but in actual use, it is common to be completely scrapped in 1-2 years. Just like the cycle life mentioned above, any lead-acid battery (including domestic and imported) cannot escape the vicious circle of early scrapping in use. This is the world-recognized problem of lead-acid battery for more than 140 years since the invention of lead-acid battery - "irreversible vulcanization" of lead-acid battery.

Now that we know the killer that reduces the life of lead-acid batteries, can we delay battery aging? Obviously, this can be done. If the following situations are avoided frequently, a set of qualified batteries can basically achieve a service life of about 3 years. For example, the use of inferior chargers, frequent overshoot, frequent under-power, street fast charging, high-power discharge, emergency braking and emergency stop, etc.

It can be seen that the service life of the battery is not only a problem of the battery itself, but also related to its related use conditions, environment, user habits, etc. Therefore, in order to use the battery for a long time, in addition to purchasing qualified battery products, it is necessary to learn Pay attention to the maintenance of the battery. In the follow-up, we will popularize the principles and common sense of battery maintenance and service life, and answer your confusion about why the battery is not durable.

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