KWS-1902C VOLTAGE AND CURRENT METER USB 1. Combined with a unique accuracy algorithm, the accuracy and stability of the power tester are ensured at the hardware and software level. 2. This USB C power tester supports dla QC2.0/QC3.0/PD/SAMSUNG. 3. The voltmeter ma a power-off storage function, so it can store capacity and energy data when the power is off. 4. Thanks to the 0,96 inch high resolution IPS color liquid crystal display, the data is very clear do viewing. 5. Practicality allows for flexible use, including smartphone, computer, portable power bank and so on. Specification: Item Type: USB C Power Tester Product Material: ABS Product model: KWS-1902C Kolor: Black Voltage: DC4-30V Current: 0-5,1A Capacity: 0-99999mWh Load resistance: 1-9999,9 Ω Voltage Resolution: 0,002 V Current resolution: 0,002A Power: 0-150W Product Interface: USB C 24pin Display screen: 0,96 inch color screen Test direction: bidirectional Support: QC2.0/QC3.0 Applicable temperature: 0-80 Time: 0-99 hours Product Size: approx. 55 x 26,5 x 6 mm / 2,2 x 1 x 0,2 inches How to use: 1: Single short press once to change the display side; 2: Quickly double-click the button to rotate the displayed page 3: Press and hold the button for 3 seconds to delete all saved data; 4: Charging flow direction indicator: Kolor arrows and scroll speed are according to current; Small, ale changes, the order of current from small do large: green, yellow, orange, red, im larger current, the higher the scrolling speed, and the flow direction indicator will not be displayed when it does not ma current. 5: Current and Voltage Calibration Method: You need to use standard 5.000V voltage to press and hold the button to turn on. When the “Factory Setting” appears on the screen, you can release the button and the product will automatically calibrate. Method of calculating mobile power: The mobile power supply is fully charged and connected do KWS-1902C (data first cleaned) and electrical appliances and discharged do when the output stops. Method 1: Mobile power capacity KWS-1902C measured data in mAh x output voltage battery voltage performance Method 2: Mobile power supply capacity KWS-1902C Measurement mWH: battery voltage efficiency (The general output voltage of mobile power supply is 5V, battery voltage is 3,7V, capacity is about 85-90%) List of packages: 1 x power tester USB C 1 x User Manual