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It does a good job. It shows V/A/mAh all the charging parameters and how long it took. So I found out which cables were not good and which chargers didn't deliver as much as they claim.
It is the most practical USB power meter-tester for simultaneous measurement of multiple outputs on a power bank or USB charger. There are two other models from UNI-T, each having only one output/input. The UT658DUAL has two inputs and USB extensions (type C and A), making it very convenient. It features two adjustment buttons and a large LCD screen with backlight that displays the measured voltage, power, capacity, equivalent circuit resistance, D+ and D- voltages. It can store up to 10 measurement groups. It is compatible with the PD 3.0 protocol as seen in the video with the measurements here: https://www.youtube.com/watch?v=gpMyVwkLgIs
You will need a PD3.0 USB trigger to measure devices or PD cables.
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