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USB-C Power Meters

See the watts, volts and PD protocol on a cable

1 product · 1 guide

Guides

USB-C Power Meters and Cable Testers: See What Your Charger Really Negotiates

USB-C power meters compared on voltage range, PD readout and e-marker reading: the ChargerLAB KM003C, Plugable VAMETER3, Klein ET920 and FNIRSI FNB58.

Updated November 2, 2026Read

All usb-c power meters (1)

Klein Tools

20V max5A max

Klein Tools ET920 USB Digital Meter (USB-A and USB-C)

An inline USB meter with USB-A and USB-C pass-through that shows voltage, current, charge, energy and calculated resistance, powered by the port it measures.

Comes in 2 versions: see which to buy

USB-C chargers
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