4-30V 0-5A Digital Dispay Usb Tester Charger Capacity Doctor Quick Charge Power Bank Voltmete Kws-mx17

It displays on the screen the voltage, current and capacity. 
It can also give you a rough estimate of the capacity of the device you are charging. 
Test using a USB charger, battery power bank or Micro USB Cable. Test your iPhone or Android phone 
Displays Current (Amps), voltage and capacity 
Model: KWS-MX17 
Item: Current and voltage tester 
Voltage: 4-30V 
Current: 0- 5A
Grouped: Groups 1-9 
Time: 0-99 hours 
Temperature: -5-80 degrees 
Power: 0-150W 
Watt: 0-99999Wh
Color: Black, Blue