Fjofpr US-B Power Meter DC 4-20V 3A USB Voltage Current Display USB Tester Multimeter Test Speed Of Charger Cables Capacity Of Power Bank QC 2.0

US-B Power Meter DC 4-20V 3A USB Voltage Current Display USB Tester Multimeter Test Speed of Charger Cables Capacity of Power Bank QC 2.0 Specification: Product Name: USB Power Meter Product color: White Material: ABS Gross weight: 0.04lbs(16.2g) Product size:7.3x2.3x1.35cm/2.87x0.91x0.53inch Package size:12x8x2cm/4.72x3.15x0.79inch 1.IN - input to the output port of the charger 2.RTZ- Z-ERO button PRE-SSED for 3 seconds to clear the screen 3.OUT-Output connected to the USB port of the data cable 4. Input voltage display window (4-20V) ±1% accuracy 5. Charging current display window (0-3A) ±1% accuracy 6. Battery capacity display window (0-99999mAh) 7. Working time display window (0-99H) Unit: minutes Features: Multi-function 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. Measuring voltage: 4V-20V; measuring current: 0-3A. The tester is widely used in the quality inspection of 3C digital peripheral products and is the first choice for digital 3C digital game enthusiasts and electronic enthusiasts Fast charging identification widely compatible: AT24 supports QC2.0 QC3.0 Andriod DCP fast charging protocol identification allowing you to K-NOW the charging status of your phone anytime anywhere. Power-off storage data guaranteed: Working time and capacity display with memory function after power failure 4-digit accuracy more accurate measurement; measure load equivalent impedance and power; using high-precision thermistor sensor; USB 2.0 interface，support USB2.0/3.0 Interface mobile hard disk and U disk test. Adopt 0.96-inch IPS high-definition color screen 160-degree wide viewing angle high brightness and long service life Measure the quality of the charger: connect the same load compare no-load and load the larger the voltage drop the worse the charger capacity and quality; the voltage drop is not obvious or the voltage rises (leisure loss compensation function). The better the load capacity the better the quality Package Include: 1x USB Power Meter