Specification:
1.Input USB
2.RTZ, Reset button, press it three seconds will Reset
3.Out USB
4.Voltage: 4v-20v ( 1% accuracy )
5.Current: 0-3A ( accuracy of 0.4% )
6.Battery Capacity (0-99999mah)
7.Working time (0-99Hour)
8.The working time and Capacity have Memory function when power off