Description LCD USB Mini Voltage and Current Detector USB Charger Tester MeterFeatures This test can be a USB charging current voltage discharge capacity intelligent devices It can be very easy to find digital device charging problem Tester three dimensional size 58 28 5 15mm without cable about 16 cm length of the line The only button on the tester is used to view and test data switch thetester can store 10 groups of test data USB output port can be connected to a data line a discharge resistor or the like cable device comprising a data communication function the data does not affect the data transmission line Test specifications voltage can not exceed 7V current can not exceed 3 5A Note When the voltage is lower than 4 7V on the instrument display or higher than 5 3V the LCD screen will flash Does not affect the use Here is a example for 3A When you set electonic load at 3A model the current will be adjusted step bystep It will cost you about 10 seconds and you can see the result changingprocedure in the LCD screen When you see the 3A result shown in LCD screen the adjustment process is finished You can shut off the electronic load and the parameters will be saved automatically Specification Input 3 7V 50mA 3500mAOnput 3 7V 50mA 3500mACapacity 0 19999mAhCommunication function YesParameters adjusting fuction YesEquipments for parameters adjustment One electronic load one constant current source Parameters that you can test