KCX KCX-017 Power Bank Capacity Tester, White This test can be a USB charging current, voltage, discharge capacity, intelligent devices. It can be Tester three dimensional size 58 * 27 * 19mm (without cable), about 20cm length of the line. USB output port can be connected to a data line, a discharge resistor or the like cable device compr Test specifications, voltage can not exceed 7V, current can not exceed 3.5A. Note: When the voltage