Sell ►10 in 1 Digital Dispay 4-30V DC USB Tester Current Voltage Charger Indicator Power Bank Battery best price

10 in 1 Digital Dispay 4-30V DC USB Tester Current Voltage Charger Indicator Power Bank Battery Capacity Volt Meter Detector Timing Ammeter Voltmeter Specification: Material: ABS Current: 0-5A Voltage: 4-30V Timing: 0-99 hour Power: 0-150W Capacity: 0-999999mAh Internal temperature: 0-80 ℃ Group: 1-9 group mAh: 0-999999mAh mWh: 0-999999mWh Charging Resistance: 0-999.9Ω D positive Voltage: 0-10V D negative Voltage: 0-10V Size: 56.6*24.7*11.2mm/2.23*0.97*0.44'' Weight: 20g Color: White, Black Instructions: 1: Click the button to view the 1-9 group charging data. 2: Press the button for 3s and take out a set of charge data. 3: Double-click the button, rotate the screen to view. 4. Press the button long time, insert the USB interface to enter voltage calibration: For example: (1) If display (5.526V Right indicator arrow) and then double-click the button quickly. (2) If display (5.528V Up indicator arrow), can click the button to increase the display voltage. (3) Double-click the button quickly, if display (5.528V Down iindicator arrow), can click the button to lower the display voltage. (4) Then quickly double-click the button again, if display (5.526VRight indicator arrow), and then click the button once again, the screen will display the current calibration! The system automatically performs the current calibration and automatically returns to the function home page after the calibration is complete. Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! 2. Please allow 1-3cm measuring deviation due to manual measurement.