The service life of any battery is directly related to its maintenance, the conventional cycle life of lithium iron phosphate batteries can reach 2,000 times, and the service life can reach 8 to 10 years, but most of the current batteries can not reach the life, because of the lack of correct maintenance means.

1) The lithium phosphate battery can not be stored or worked in a strong static electricity and strong magnetic field environment for a long time, otherwise the safety protection device inside the battery will be damaged or even fail; It can not be stored or worked at high temperature for a long time, otherwise it will lead to high temperature of the battery, fire or function failure, which will affect the service life of the battery; The battery should not be in contact with corrosive substances, fire sources and heat sources.

2) Wear insulation gloves, regularly check whether the battery shell is damaged, whether the battery wiring harness is loose and broken, and whether the battery pole is deformed and damaged. If it is handled in time, and dust the battery box with an air gun every month, pay attention to not blowing other impurities into the battery box, the maintenance person needs to wear protective clothing and protective glasses.

3) Check whether there is a fault alarm code on the car display. If there is a fault code, handle the fault in time.

4) Check whether the voltage detection of the management system is accurate (check whether the voltage value on the display is consistent with the actual measured voltage value), whether the current is consistent with the clamp meter, and whether there is no fault and whether the communication is normal. When measuring the voltage, you can directly measure the head of the collection line with a multimeter. Note that the current cannot be measured under the dynamic condition of the vehicle (dangerous).

5) According to the technical standards and the actual operating environment, check whether the voltage of the battery pack as a whole and the single unit is within the required range, and check whether the battery has leakage; When charging, check whether the charging current is within a certain range of requirements; Before charging, ensure that the low voltage and high voltage alarms of the battery pack are within the standard range. Check whether the voltage, temperature, current and SOC information of the single battery pack is normal and record it. If there is any fault, it must be handled in time, and the vehicle cannot work with fault.

6) If the lithium iron phosphate battery in use or charging abnormal conditions, such as deformation, heat and odor, should immediately remove the battery from the device or disconnect the charging connection, do not use with fault.