Practical Tool

Practical Tool

DROK® USB Multimeter Voltmeter Ammeter Universal 3.2-10V 3A voltmeter power meter power meter power meter power Voltage testers Electronics Digital Ampere Power Voltage Detector Digital Dual Charger 2.0 LED Display Power Monitor Meter (Universal, Red + Blue) (Electronics)
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Customer Review

Very good and accurate display, easy to use and a great tool for narrowing down problems with USB charge currents. Has helped to identify why a tablet is bled despite mains supply in continuous operation until the battery was empty. The blue indicator, however, is virtually unreadable in sunlight.

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