| Feature: 1. CURRENT TESTER: Real time detection of the state of charge, voltage, current, capacity, electricity, power, equivalent impedance, temperature and other indicators of electrical appliances at a glance. 2. FAST CHARGING: Supports QC2.0 fast charging protocol identification, allowing you to know the charging status of your phone anytime, anywhere. 3. WIDELY COMPATIBLE: Digital USB tester widely compatible with USB A port devices, such as cell phones, tablets, laptops, car chargers, power packs, wall chargers, cables, etc. 4. MORE ACCURATE MEASUREMENT: Voltage range DC 3.5‑20V+-1percent , current range DC 0‑3.3A+-1percent . Built in professional sampling circuit ensures the accuracy, pre… | |