Comprehensive Voltage and Current Testing: Equipped to handle a wide voltage range from 3.7-30V and a current measurement range from 0.00A to 4.000A, this USB tester is ideal for a variety of electrical DIY projects and troubleshooting tasks. Accurate Power and Tracking: Features precise power measurement from and accumulation up to, making it perfect for monitoring the efficiency and consumption of your electronic devices. Enhanced Capacity Accumulation: With a capacity accumulation range of 0 to 99999mWh, this device allows for detailed tracking of battery capacity over time, aiding in performance assessments and maintenance schedules. Versatile Compatibility and No Battery Required: This tool is compatible with various USB interfaces including, and operates efficiently without the need for an internal battery, enhancing its convenience and usability., Weight: 0.0440924524 Pounds, Manufacturer: Xnuiasqe