How to distinguish the quality of lithium iron phosphate battery brand

1. The consistency of lithium iron phosphate battery cells. If the consistency of lithium iron phosphate battery cells is not good, if there is a protective plate, according to the principle of bucket, its capacity will be the capacity of the lowest capacity battery cell as a whole. The entire battery pack will neither fully release electrical energy nor fully absorb electrical energy due to one battery cell. Over time, the life of the battery pack will be short. If the battery pack is not equipped with a protective plate, not only will there be a loss of capacity, but there may also be safety issues and overheating and explosions. The method to test the consistency of lithium iron phosphate batteries is to connect the battery cells to be tested in series, a group of 4 or a group of 6, and perform 1C charging and 3C discharge. During the charging and discharging process, look at the voltage of the battery. The lift difference will do. 2. The self-discharge rate of lithium iron phosphate batteries As the power consumption of lithium iron phosphate batteries is large, this requires that the self-discharge rate of battery packs should be less than 2% per month. To achieve this, the above-mentioned consistency requirements are indispensable , After passing the conformance test, the test method for the self-discharge rate is: charge the battery with the same capacity and let it stand for one month, and then measure its capacitance value. 3. The high rate of lithium iron phosphate battery can withstand high rate charge and discharge of lithium iron phosphate battery, its rapid charge and discharge ability is strong, for lithium iron phosphate battery, it must be able to charge and discharge quickly to be able to meet It is used for the requirements of lithium-ion batteries, and the higher the charge-discharge rate, the better. The method for high-rate detection is to use the highest-rate detection according to the conditions supplied by the lithium-ion battery UPS processing manufacturer. If there is an obvious serious heating problem during the charging and discharging process, the quality of the battery is not good. Generally speaking, power lithium-ion battery packs should meet the safety requirements of 3C charging and 30C discharging. 4. Long life, the more charge and discharge cycles, the better. As a general requirement, lithium iron phosphate battery packs have 85% capacity after 2000 times of 1C discharge, and 80% after 3000 times. Of course, each processing factory has different standards due to different technological levels and materials. The detection method is theoretically based on the data supplied by the manufacturer. Whether the data supplied by the manufacturer is true or not, at present can only look at the brand effect, which depends on which brand the consumer believes. 5. The internal resistance of lithium iron phosphate battery is as small as possible. This parameter changes with the load, temperature and other factors. As the battery life decreases, the internal resistance gradually increases. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Who is better than 18650 battery with polymer battery?