The Cycle Life of LiFePO4 Battery:
What Should You Know?

Author: Polinovel    |    February 16, 2023
Battery Cycle Life


LiFePO4 batteries are widely used in various fields, such as electric vehicles and energy storage systems due to their high energy density, no memory effect, low self-discharge, and long cycle life.

Cycle life is a top concern when we choose a battery. In this article, let’s take a closer look at the cycle life of the LiFePO4 battery.

The Cycle Life of LiFePO4 Battery

One charge and discharge process of the battery is called one cycle. Under certain discharge conditions, the number of cycles the battery reaches when it works to a specified capacity is called cycle life. The specified capacity for LiFePO4 batteries is 80%. This “80%” has a direct relationship with the design of the LiFePO4 battery. It is closely related to the excess capacity factor of the negative electrode.

What Affects The Cycle Life of LiFePO4 Battery?

There are many complex physical and chemical reactions in the charging and discharging process of the LiFePO4 battery, so there are various factors that affect its cycle life.

First, the aging and degradation of battery materials affect the battery’s cycle life. The materials inside the LiFePO4 battery mainly include positive and negative active materials, conductive agents, current collectors, separators, and electrolytes. These materials will decay to some extent during battery use, which can affect the cycle life of the battery.

The depth of charge and the depth of discharge are also important factors affecting the cycle life of LiFePO4 batteries. For example, the heat released during overcharge tends to accumulate in the battery, which further increases the temperature, affects the lifespan of the battery, and increases the possibility of fire or explosion.

The process of using lithium batteries is the process of a charging and discharging cycle. The size of the charging and discharging current, the selection of the charging and discharging cut-off voltage, as well as the charging and discharging mode, also have an important influence on the cycle life of LiFePO4 batteries. Blindly increasing the working current of the battery, increasing the charging cut-off voltage, or reducing the discharge cut-off voltage will shorten the life of lithium iron phosphate batteries and degrade their performance.


There are many factors that affect the cycle life of LFP batteries. Finding a reliable, long-life LFP battery is particularly important. If you want a reliable LFP battery, you can go with Polinovel.

As a professional lithium ion battery manufacturer with over 15 years of experience, Polinovel can offer you safe and durable batteries to bring much convenience to your life.

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