The Keweisi KWS-V20 USB meter is a compact device that allows synchronized measurement of voltage and current on USB ports. It easily connects between a USB port of a charger or computer and a receiving device, such as a phone, USB drive, or external hard drive.

The device provides information about voltage and current intensity, allowing monitoring of the performance of USB ports and the charging process of devices.

• Voltage measurement range: 4–20 V DC (accuracy ±1%)
• Current measurement range: 0.3–3 A DC (accuracy ±1%)
• Charging capacity: 0–99,999 mAh
• Charging time: 0–99 hours and 59 minutes
• Dimensions: 72 mm x 23 mm

The device is easy to use and requires no driver installation. It is ideal for checking and measuring the current performance of USB ports, as well as monitoring the charging of power banks, tablets, and smartphones.