USB Tester V20 KEWEISI - Voltmeter Ammeter 3 A Display

USB Voltmeter Ammeter KEWEISI V20

The iconic USB V20 meter takes measurements when connected in series in the circuit. Simply connect it on one side to the power supply and plug a USB cable into the other (e.g. from a phone). It is a universal measuring instrument that checks current flow and voltage.

The backlit LCD display also shows charged battery capacity and charging time. These readings can be easily cleared with the RESET button on the upper part of the meter housing.

The meter is compatible with the USB 2.0 standard. It will also show voltage on USB 3.0 devices; however, it does not guarantee maximum throughput for that standard.

Key technical specifications

• Voltage measurement: 4 - 20 V DC
• Current measurement range: 0 - 3 A
• Measurement tolerance: 1%
• Measurement rate: 2 Hz
• Capacity scale on display: 99999 mAh
• Current consumption: 0.01 A
• Dimensions: width 2.5 cm, length 7.3 cm, height 1.38 cm
• RESET button to reset measurements
• Backlit LCD display

Example applications

• Diagnosing charging issues with smartphones and tablets
• Checking actual capacity of power banks and batteries
• Testing performance and efficiency of USB wall chargers
• Verifying USB cable quality for voltage drop
• Monitoring current draw by mini PCs and electronic modules

Benefits

• Quick diagnosis - instant detection of faulty cables or chargers
• Readability - clear, backlit LCD screen for easy reading of parameters
• Easy operation - plug-and-play device, no separate power supply required
• Versatility - simultaneous measurement of voltage, current, time, and capacity
• Compact size - small footprint for easy portability and use anywhere