The number of cycles of LiFePo4 solar battery and the service life between the batteries are inextricably linked. The battery capacity will decrease a little every time a cycle is completed, and the service life of the lifepo4 solar battery will also decrease. So how long is the cycle life of lifepo4 solar battery? In this article, TIANSHI battery will talk to you about battery life.
How long is the cycle life of LiFePo4 batteries for solar?
There are many ways to store energy, and lead-acid batteries are one of them, but if we look at some specific areas, the time has come for lithium batteries to replace lead-acid batteries. Why is that? One big reason is that the lifepo4 solar battery has a longer cycle life than a lead-acid battery and does not require maintenance.
Cycle life refers to how many times the battery can withstand charging and discharging before the battery capacity drops to a certain value under a certain charging and discharging system. The cycle life of a LiFePo4 solar battery represents the number of cycles that can be charged and discharged before the battery's capacity drops to a certain level. According to the data, LiFePo4 solar battery generally achieves a cycle life of more than 5000 times.
The lithium solar battery used in the energy storage field generally requires more than 3,500 cycles, that is, the life span of the lithium battery for energy storage is more than 10 years. The cycle number of LiFePo4 solar battery is much higher than that of lead-acid battery and ternary battery, and the cycle number can reach more than 7000 times.
Although the purchase price of LiFePo4 solar battery is two to three times that of lead-acid batteries, the long-term economic benefits are still much higher. In other words, if the cycle life of the LiFePo4 solar battery is long enough, even if the initial purchase price is a little higher, the overall price is still cost-effective.
In fact, the quality of the LiFePo4 solar battery mainly depends on its material. Generally speaking, the LiFePo4 solar battery with excellent quality has a long life, which can effectively reduce the cost of repair and maintenance, and also reduce the overall investment of the system.
How to calculate the LiFePo4 solar battery life?
The national standard stipulates the cycle life test conditions and requirements of lithium-ion batteries: charge for 150 minutes under a constant current and constant voltage mode 1C charging system at a room temperature of 25 degrees, and discharge under a constant current 1C discharge system to 2.75V as a cycle. The test ends when one discharge time is less than 36 minutes, and the number of cycles must be greater than 300.
In fact, the number of cycles of lifepo4 solar battery is not only affected by the way users use it, but also related to the production technology level and material formula of the lithium-ion battery manufacturer.
Do the cycle times and service life of LiFePo4 solar battery affect each other?
Do the cycle times and service life of LiFePo4 solar battery affect each other? For LiFePo4 solar battery, there are generally two lifespans: cycle life and storage life. The more cycles or the longer the storage time, the greater the life loss of LiFePo4 solar battery. However, LiFePo4 battery life is longer than traditional lead-acid batteries. LiFePo4 batteries produced by regular lithium battery manufacturers generally have more than 2500 cycles.
Cycle is use. We are using batteries and we are concerned about the time of use. In order to measure the performance of how long a rechargeable battery can be used, the definition of the number of cycles is stipulated.
The reason why LiFePo4 solar battery can replace other types of traditional batteries is also related to its longer service life. In the battery field, measuring the service life of a battery is usually not simply expressed by time, but by the number of times of charging and discharging.
According to the service life of ternary lithium battery or lithium iron phosphate battery, the service life of the battery is about 1200 to 2000 cycles, and the cycle number of lithium iron phosphate batteries is about 2500. The number of cycles will decrease as the battery is in use, and the number of cycles will decrease, which means that the service life of the LiFePo4 solar battery is also continuously reduced. During use, the number of cycles of the battery is The continuous decrease means that an irreversible electrochemical reaction will occur inside the LiFePo4 battery, resulting in a decrease in capacity.
The life cycle number of LiFePo4 solar battery is determined according to the battery quality and battery material. The cycle number of LiFePo4 solar battery and the service life between batteries are inextricably linked. Every time a cycle is completed, the capacity of the LiFePo4 solar battery will be reduced a bit, and the service life of the LiFePo4 solar battery will also be reduced.
The above is the explanation of the cycle life of the LiFePo4 solar battery. As the use time increases, the life of the lithium solar battery will often be affected. Normally, the lithium solar battery is used reasonably and the correct method is used to make the life of the lithium battery longer.