USB C Extension Adapter, 2Pack 40Gbps Transparent USB C Converter Power Meter Tester with LED Digital Display,PD 240W USB Type C Male to Female Adapter Connector for iPhone 15/16 Series

Very handy device to have on hand. Good for figuring out what chargers and cables are putting out and weeding out the weak ones. Very easy to use, a bit hard to read if you can’t find your glasses, but a great tool. Also, it does not appear to affect charging speed while in use, so no penalty for knowing what is going on.

I use these all the time on my USB-C cables to verify they are charging my widgets

This little USB-C male - female multimeter is great for telling if and how well your devices are charging. It automatically cycles between volts, amps and watts. It agrees with my other USB multimeter and my laptops internal sensors charging statistics within a margin of +-5% based on limited testing. I would prefer a button to allow manual selection is my only real complaint. The way I have it plugged it in, in the video should be avoided for prolonged periods as it puts undue stress on the port due to leverage. I would generally recommend attaching this to the lower cost of two devices normally the charger in most cases. I did not notice any data transfer issues and by all rights it should be passthrough and not active. This appears to be the case, and it is not detected as a device in windows. Based on it being clear and my familiarity with most of the internal components I would say this probably poses an extremely small risk from a cyber security standpoint. Being that it's passthrough it should not be detected on corporate networks though you should still follow your companies guidelines on peripherals this product would normally fall under a charging adapter category. They are dirt cheap, well-constructed and work as advertised: over all a good product that would have been perfect with a selector button.

Good quality shows charging speed works well has a great connectivity and shows what the amps are in real time cause alote of chargers lie about output and a great value for the money

This product is a simple, straight adapter with a USB-C Male connector on one end and a USB-C Female connector on the other. In between the two connectors is where the Magic happens. In that section of the adapter is an LED read-out display that will automatically display the Volts, Amps, and Watts passing through the connector at any particular point in time. The adapter has a clear polymer cover over the center section so that the user may see the small circuit board contained therein. The circuit board is the host for the 3-digit LED display device and the chips and other components necessary to accomplish the Magic. The LED display device will individually display the Voltage, Amperage, and the Watts that are passing through the device at any particular time. The units being displayed are identified by a “V”, “A”, or “W” to the right of the numerical portion of the display. The values displayed are in order of Volts, Amps, and finally Watts and then the display starts again. I have observed that the Volts data and the Amps data are each displayed for about 3 seconds each and then the Watts data is displayed for about seven seconds before returning to the Volts data display. The device is compliant with the Power Delivery 3.1 (PD 3.1) charging protocol. It is capable of transferring power at a rate of up to 240 watts. The data transfer rate is up to 40 Gbps and it is compliant with the USB 4.0 Standard. The adapter is UHD capable and it supports video resolutions of 8K@60hz, 5K@60Hz, and 4K@60Hz when used to connect to an external display. I really like this product. It gives me information about the device I am using and is very useful when charging Lithium-ion batteries. It is also useful when determining exactly what charging protocol is being utilized as the voltage and amperage is displayed. The Magic is just wonderful.

This meter is easy to use and is compact enough to leave on the cable. It doesn't affect charging, or data speeds and gives helpful information on your current charging speed. You get 2 for the price so it is also a good value.

Love this device. It came in very handy trying to figure out what combination of box and wire would output high enough power to charge the VR while playing

Vert neat little power tester. And I do mean little, I can see these getting lost very easily. I wish it had a spot to attach a string or keyring to. But it does exactly what it says it does, and without affecting charge or data rates. Great price too.