Each charger will be fully inspection to ensure product performance in good condition:

Withstand voltage insulation test - start high voltage machine test
Charging preparation -- measuring input voltage
Charging connection confirmation - measuring resistance
Ready to charge - measure current
Ready to charge - measuring frequency
Start up and charging stage - measure the output voltage
Start up and charging phase - measuring output current
Normal charge end test - measure output voltage

CP Disconnection Test: measure the output voltage after resuming charging
CP ground test - measure output voltage
Input overvoltage protection - measure output voltage
Input overvoltage protection - automatic recovery function, measuring output voltage
Input undervoltage protection - measure output voltage
Input undervoltage protection - automatic recovery function, measuring output voltage
Leakage protection - measuring output voltage
Overcurrent protection - measuring output current
Over current protection - automatic recovery function, measuring output current