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The remaining capacity of the lithium iron phosphate ion group is 84% after the cycle life is 5000 times, and the remaining capacity of the ternary lithium battery group is 66% after the cycle life is 3900 times.
If the remaining capacity/initial capacity = 80% is used as the end point of the test, the 1C cycle life of the lithium iron phosphate battery test is now more than 3500 times, and some are 5000 times, while the ternary lithium battery test is about 2500 times the 1C cycle life.
At this point in the cycle life, the actual life of the lithium iron phosphate battery pack is much longer than that of the ternary lithium battery. Under the same number of cycles, the remaining capacity of the lithium iron phosphate battery is much larger than that of the ternary lithium battery. Besides the huge gap in cycle life between the two batteries, they also differ in their safety features.
In theory, both the lithium iron phosphate battery pack and the ternary lithium battery can be charged and discharged more than 2,000 times, that is, more than five years. General electric vehicles charge for 3 days at a time, so the life of lithium iron phosphate batteries and ternary lithium batteries can basically reach about 8 years. If 1000 charge and discharge cycles are performed, the ternary lithium battery has been attenuated by 50% in essence, which means that it can only run half of the original mileage when fully charged.
The lithium iron phosphate battery pack has a cycle life of more than 2,000 times, and the standard charge (5-hour rate) can reach 2,000 times. Lead-acid batteries of the same quality have new half a year, old half a year, maintenance and maintenance half a year, up to 1-1.5 years, while lithium iron phosphate batteries under the same conditions, the theoretical life will reach 7-8 years. Through induction, its functional price is theoretically more than 4 times that of lead-acid batteries. High-current discharge can quickly charge and discharge with a large current of 2C. In a special charger, the battery can be fully charged within 40 minutes after charging at 1.5C, and the starting current can reach 2C, but lead-acid batteries do not have this function.
The theory of ternary lithium battery life is 1200 times of full charge and discharge, which is also a complete cycle life. According to the frequency of use, once the charge and discharge are completed for three days, 120 times of full charge and discharge a year, the life of the ternary lithium battery is 10 years, even in use In the process of reducing loss, the days may be charged and discharged, and it can also reach eight years. Note that what is mentioned here is the full capacity. After 8 years, the capacity of the ternary lithium battery will exceed 60%, which is normal. Therefore, the lifespan of the ternary lithium battery is generally about 8-10 years.
The above is the cycle life of lithium iron phosphate battery, and the introduction of which cycle life is longer between lithium iron phosphate battery and ternary lithium battery. I believe that through the above introduction, everyone has a basic understanding of the cycle life of lithium iron phosphate battery. The remaining capacity of the lithium iron phosphate battery pack is 84% after the cycle life of 5000 times, and the remaining capacity of the ternary lithium-ion battery pack is 66% after the cycle life of the ternary lithium-ion battery pack is 3900 times. At this point in the cycle life, the actual life of the lithium iron phosphate battery pack can be much longer than that of the ternary lithium-ion battery. Under the same number of cycles, the remaining capacity of the lithium iron phosphate battery is much larger than that of the ternary lithium battery. Besides the immeasurable difference in cycle life between the two batteries, they also differ in their safety features.