The vacuum cleaner battery charging and discharging life testing machine is used to monitor the long-term and interval time of vacuum cleaner battery products to achieve charging and discharging aging testing. Powered by an external programmable power supply, independently simulate actual charging of batteries at 20 workstations. Aluminum resistors are used as adjustable loads to discharge batteries. The testing machine uses PLC and current acquisition module to collect and judge electrical parameters of voltage and current changes during charging and discharging of 20 channels. Set relevant parameters. PLC real-time displays and records changes in parameters such as voltage, current, resistance, capacity, temperature, etc. consumed by each workstation, as well as charging and discharging time and testing times, and performs data recording and USB data export