USB detector voltmeter ammeter power capacity tester meter voltage current usb power bank charger

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The USB detector voltmeter ammeter is a compact and efficient tool designed for measuring voltage and current in USB power banks and chargers. With a clear OLED display and a measurement range of DC3.50-9.99V and DC0.00-3.00A, it ensures accurate readings for both professionals and hobbyists. Its portable size makes it an essential gadget for anyone looking to optimize their power management.