UD18 USB 3.0 Type-C PD DC5.5 5521 Voltmeter ammeter voltage current meter battery charge measure cable resistance Tester

The UD18 USB 3.0 Type-C PD DC5.5 5521 Voltmeter Ammeter is a versatile and compact device designed to measure voltage (3.6V-32V), current (0A-5.1A), and power in real-time, supporting USB 3.0, Type-C, and DC5.5 (5521) connections. Ideal for monitoring battery charging performance, cable resistance, and overall power efficiency, it features Power Delivery compatibility for faster charging and data logging for detailed analysis. This multifunctional tester is perfect for use in labs, workshops, or by hobbyists, ensuring devices operate at optimal power levels.