Lightning Male to USB C Female Adapter,35W PD Fast Charger with LED Wattage Display,Data Sync & Fast Charging for iPhone 15 Series,iPad Air/Pro,MacBook,Galaxy(1 Pack)

So all USB-C cables are different, and you only know if a cable works with a particular device if you can see it charging via the charging status light. This handy little device gives you the necessary visibility and lets you know precisely how many watts are traveling through the cable if you are charging. For example, if you know the laptop can charge at 100 watts, and you don't see around 100 watts shown on the display, it must be fixed. If you see something like 10 watts or smaller, there may be other problems, perhaps the cable, possibly the adapter. This little display is handy for any USB cable to ensure that the right amount of power is traveling through the cable into the device, so you don't leave it plugged in overnight just to realize that nothing happened the following day.

I got this as a Lightning converter that also monitors charging. It plugs in OK. Display is pretty dim, hard to read with lights on. Voltage and power displays are not that accurate; with 5V on cable it shows 4.8V. With a 4.4W load it shows 5.6W on display. It's still useful for getting a general idea of the charging rate, but could be better.