Review of the USB Uni-T UT658A

Uni-T UT658A USB tester The Uni-T UT658A is a USB tester designed to monitor the parameters of chargers, power banks, USB Type-A cables, and other power supply devices. The device measures voltage in the range of 4–24 V DC, current from 0.05 to 3 A DC, capacity up to 99,999 mAh, energy up to 1000 Wh, equivalent circuit resistance from 1 to 480 Ω, and D+ and D- data line voltages up to 3.3 V, allowing for a quick assessment of power quality and the condition of the tested equipment. The model supports USB Type-A ports, USB 2.0 and 3.0 standards, and QC 3.0 fast charging. Additionally, it allows for the storage of 10 data sets and the recording of measurements for up to 99 hours, 59 minutes, and 59 seconds with a resolution of 1 second. Simultaneous display of key parameters on the screen facilitates result analysis, while the compact dimensions of 93 × 45 × 13 mm and a weight of 50.6 g make the device convenient for everyday use and easy to carry. Included USB tester User manual Specifications ManufacturerUni-T ModelUT658A Product typeUSB tester Input and output portsUSB Type-A Data transmission standardsUSB 2.0 / 3.0 Voltage measurement range4–24 V DC Voltage resolution0.01 V Current measurement range0.05–3 A DC Current resolution0.01 A Capacity measurement range0–99,999 mAh Capacity resolution1 mAh Energy measurement range0–1000 Wh Circuit equivalent resistance range1–480 Ω Data line D+ voltage range0–3.3 V Data line D- voltage range0–3.3 V Data logging memory10 data sets Maximum recording time99 h 59 min 59 s Time resolution1 s Supported fast charging protocolsQC 3.0 ColorWhite Dimensions93 × 45 × 13 mm Weight50.6 g CertificationsCE, UKCA