xcluma USB Charger Doctor Mobile Power Detector Battery Test Voltage Current Meter - Product Features
- Usb charger doctor voltage current meter mobile battery tester power detector display data: Voltage current input usb
- Rtz, reset button, press it three seconds will reset out usb voltage: 4v-20v ( 1 percent accuracy ) current: 0-3a ( accuracy of 04 percent ) battery capacity (0-99999mah)
- Working time (0-99hour) the working time and capacity have memory function when power off