In the case of lithium iron batteries with good quality, the attenuation can be controlled within 5% in the first year and within 15% in the second year.Ternary types, 1-year decline in 7-10%, 2-year decline in 20-25%.Of course, specific and use load, use frequency has a relationship, here is just a general statement.
Based on a variety of factors, the service characteristics of lithium iron battery can be roughly expressed as follows: relatively large size, low temperature performance is relatively general, but it can maintain a relatively gentle decay rate in its life cycle, which can be used for about 8 years.And if you use it in the warm place, Lithium iron phosphate batteries last a little longer than eight years.
Three lithium battery features: small volume, can be installed with a larger capacity, winter performance decline is not much, the initial capacity is larger, than iron lithium battery has an obvious mileage advantage, the general life of about 8 years. But also we need to see the cycle of complete charge and discharge, three lithium in daily use can reach 1200 times of complete charge and discharge, if the charge and discharge cycle is long, it will have a higher life. However, the cycle life of lithium iron phosphate battery can reach more than 2000 times, and the standard charging rate (5 hours) can reach 2000 times.The lead-acid battery of the same quality is "new half a year, old half a year, maintenance and maintenance half a year", with a maximum time of 1-1.5 years, while the theoretical life of lithium iron phosphate battery under the same conditions will reach 7-8 years.Taken into account, the performance-price ratio is theoretically more than 4 times that of lead-acid batteries.Large current discharge can charge and discharge rapidly with a large current of 2C. Under the special charger, the battery can be fully charged within 40 minutes after charging 1.5C, and the starting current can reach 2C. However, the lead-acid battery has no such performance.
Real life of LiFePO4 batteries
1. Different discharge rates of LiFePO4 batteries in different environments:
Small make up to introduce the first that the Lithium iron phosphate batteries under different environments, it will have different discharge rate, and the minimum discharge rate can reach 0.5 c, maximum discharge rate can reach 10 c, and this kind of battery in either discharge rate, in the process of discharge will be very smooth, in general voltage is very smooth, almost will remain the same, only when the Lithium iron phosphate batteries discharge end, will find it will be a sharp decline phenomenon, this can be very effective that the lithium iron phosphate battery it has very good discharge properties.That means its true life span is very long.
2. Display of LiFePO4 at different temperatures:
Second to introduce, Lithium iron phosphate batteries in different adjustment of temperature, also can have different discharge phenomenon, we have to set the temperature to minus 20 to 40 degrees or above 40 degrees, at that time you will find that the LiFePO4 batteries in 23 ℃, power capacity can reach 100%, and the amount of discharge at 0 ℃ is 78%, which means lithium battery in different temperature under the conditions of its discharge rate is different, so we should be sure to keep it in the temperature of a particular area,when we estimated to illustrate the Lithium iron phosphate batteries. The results are good, in terms of their performance at extreme temperatures, the real life of lithium iron carbonate batteries is very long, up to 570 discharge cycles.
3. Experiments of LiFePO4 battery placed at zero voltage:
Put the LiFePO4 battery in the zero voltage experiment, we found that after 3 days of battery charge, in such an environment to continue the cycle of discharge, and its capacity just change very little, which means that its capacity recovery is very good.