What is the real lifespan of a lithium iron phosphate battery pack?

What is lithium iron phosphate battery?

Lithium iron phosphate battery is a type of lithium-ion battery, which refers to a lithium-ion battery using lithium iron phosphate as the cathode material. It is characterized by strong safety and stability, high temperature resistance and good cycle performance.

What is the real lifespan of a lithium iron phosphate battery pack?

The cycle life of long-life lead-acid batteries is about 300 times, and the maximum is 500 times. Lithium iron phosphate power battery has a cycle life of more than 2,000 times. Lead-acid batteries of the same quality last "half a year for new ones, half a year for old ones, and another half year for maintenance," which is 1 to 1.5 years at most. However, when used under the same conditions, the theoretical life of lithium iron phosphate batteries will reach 7 to 8 years.

Lithium iron phosphate battery packs can generally be used for about 8 years; but if used in the south. The life of lithium iron phosphate battery is longer than 8 years. The theoretical life of the lithium iron phosphate battery pack also exceeds 2,000 charge and discharge cycles. Even if it is charged once a day, it can last for more than five years. Generally speaking, for daily household use, it takes three days to recharge, and it can last about eight years. However, due to poor low-temperature performance of lithium iron phosphate batteries, the service life of lithium iron phosphate batteries will be relatively longer in the southern region.

The service life of the lithium iron phosphate battery pack is about 5,000 times. The battery is produced with its own number of cycles and discharges (such as one thousand times). If the number of charges and discharges exceeds this number, the battery will end its life. A complete discharge will seriously affect the use of the battery. , so just don’t over-discharge.

Advantages of lithium iron phosphate battery packs compared with lead-acid batteries:

1. Large capacity. Lithium battery cells can be made from 5Ah to 1000Ah (1Ah = 1000mAh), while lead-acid battery 2V cells are usually 100Ah to 150Ah, with a small variation range.

2. Light weight. The volume of a lithium iron phosphate battery pack with the same capacity is 2/3 of the volume of a lead-acid battery, and the weight is 1/3 of the latter.

3. Strong fast charging capability. The starting current of lithium iron phosphate battery pack can reach 2C, enabling high-rate charging; the current requirement of lead-acid batteries is generally between 0.1C and 0.2C, which cannot achieve fast charging performance.

4. Environmental protection. Lead-acid batteries contain a large amount of heavy metal - lead, which produces waste liquid, while lithium iron phosphate battery packs do not contain any heavy metals and are pollution-free during production and use.

5. High cost performance. Although lead-acid batteries have cheaper materials and lower purchase costs than lithium iron phosphate batteries, they are less economical than lithium iron phosphate batteries in terms of service life and routine maintenance. Practical application results show that the cost performance of lithium iron phosphate batteries is more than 4 times that of lead-acid batteries.

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