"USB digital measuring device and tester, USB-A (Type-A)3 to 20 V DC, current: 0.05 to 3 A (monitoring mode)Integrated test loads 0.5, 1, 2 and 3 A, no external test load is requiredContinuously monitors voltage, current, capacity/discharge charge, energy and resistance (calculated) for up to 1000 hoursTests the most common standard USB-A ports, including Qualcomm Quick Charge® portsStore and recall up to ten readingsVoltage and current overload detectionHigh-resolution LCD for easy reading in low ambient lightingRobust cable for easy access to hard-to-reach portsThe robust design from Klein in pocket format is light, suitable for use on construction sites and is impact resistantTechnical data:Used capacity: 99,999 mAh maximum valueEnergy discharged: 99,999 Wh maximum valueTest current loads: 0.5 A, 1 A, 2 A, 3 AResistance: 400 Ohm maximum valueVoltage: 3 to 20 V DCCurrent: 0.05 to 3 AUSB compatibility: USB-A, compatible with Qualcomm Quick Charge®"