How many times are LiFePO4 and ternary lithium batteries charged and discharged?

LiFePO4 Batteries VS Lithium Batteries

How many times are LiFePO4 and ternary lithium batteries charged and discharged? The current lithium battery life has nothing to do with the number of charges, mainly the number of discharges and the frequency of discharge! LiFePO4 batteries, this type of battery has a higher cycle life than a ternary lithium battery pack. Officials say that after 10,000 cycles, the capacity is still 70% of the initial capacity.

How many times is the ternary lithium battery pack charged and discharged?

The imported ternary lithium battery pack can be charged and discharged about 3000 times, and the domestic one is about 800-1000 times. Ternary materials have advantages in battery-specific energy, specific power, high rate charging, low-temperature performance, etc. In terms of cycle performance, LiFePO4 materials have obvious advantages, and LiFePO4 batteries are also better than ternary materials in terms of safety.

The theoretical life of the ternary lithium battery pack is 1200 times of full charge and discharge, that is, the complete cycle life. According to the frequency of use, it is fully charged and discharged once every three days, and 120 times of complete charge and discharge a year. The service life of the ternary lithium battery reaches ten years. , even if there is loss during use or the number of charges and discharge days is reduced, it can reach eight years. Note that the capacity life is mentioned here. After eight years, the capacity of the ternary lithium battery will still be more than 60%, which is where the standard is.

For traditional batteries, ternary lithium battery packs have the advantages of long life, energy-saving, environmental protection, no pollution, low maintenance cost, complete charge and discharge, and lightweight. The ternary lithium battery has quickly occupied the 3C, automobile, and other markets under its many advantages, and gradually replaced the traditional lead-acid battery.

The life of the ternary lithium battery is calculated by the ratio of the capacity decay degree after it is used to a certain extent, and it ends directly when the capacity life is zero. The algorithm in the industry is generally that the ternary lithium battery is fully charged and discharged once, which is called the cycle life.

The theoretical life of a ternary lithium battery pack is medium among commercial rechargeable lithium batteries. LiFePO4 is about 2,000 cycles, while lithium titanate is said to be capable of 10,000 cycles. At present, mainstream battery manufacturers promise more than 500 times in their ternary battery specifications. However, after the batteries are assembled into battery packs, due to consistency problems, the voltage and internal resistance cannot be the same. The cycle life is about 400 cycles.

18650 ternary lithium battery, the capacity of this type of battery cell can reach 80% of the initial capacity after 2000 cycles of use.

How many times are LiFePO4 batteries charged and discharged?

The lithium iron phosphate battery (LiFePO4 battery) or LFP battery (lithium ferrophosphate) is a type of lithium-ion battery using lithium iron phosphate (LiFePO4) as the cathode material and a graphitic carbon electrode with a metallic backing as the anode. The energy density of an LFP battery is lower than that of other common lithium ion battery types such as Nickel Manganese Cobalt (NMC) and Nickel Cobalt Aluminum (NCA), and also has a lower operating voltage. Because of its lower cost, low toxicity, long cycle life, and other factors, LFP batteries are finding some roles in-vehicle use, utility-scale stationary applications, and backup power.LFP batteries are cobalt-free.

Lithium iron phosphate battery

The LiFePO4 power battery has a cycle life of more than 2,000 times and can be used 2,000 times with standard charging (5-hour rate). The lead-acid battery of the same quality is “new half-year, old half year, and maintenance and maintenance for half a year”, which is 1 to 1.5 years at most, while the theoretical life of LiFePO4 battery will reach 7 to 8 years when used under the same conditions.

The charge and discharge efficiency of LiFePO4 batteries are relatively high, between 85% and 90%. The lead-acid battery is about 80%. Combining a variety of factors, the use characteristics of iron-lithium battery packs can be roughly expressed as relatively large size, poor low-temperature performance, and can maintain a relatively flat decay rate during the service life, generally, about 8 years is OK; but if Used in the South. The life of LiFePO4 batteries is longer than 8 years.

LiFePO4 can be charged many times, up to 2000 times. But do not over-discharge, the battery may leak liquid within a week after over-discharging, and it needs to be charged frequently. General LiFePO4 battery charging times are 3000-5000 times. The LiFePO4 battery produced by BYD has a higher cycle life than the ternary lithium battery pack. Officials say that after 10,000 cycles, the capacity is still 70% of the initial value.

Lithium batteries do not have a fixed charge limit. The batteries from regular manufacturers can generally be charged and discharged at least 500 times, and the capacity remains above 80% of the initial capacity. One charge a day can be used for 2 years.

The battery used in the Souop portable power station is the LiFePO4 battery. The LiFePO4 battery provides 2500 cycles and a battery life of more than 10 years for the Souop portable power station.

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