Add one of these to your kit.

This 100W(20V/5A) PD USB-C cable has a built in LCD display to inform you of the real time current being utilized by your device from your charger or power bank. It's a useful item to have around to troubleshoot or diagnose charging issues you might have or to help identify the max wattage a device is able to charge at via USB-C PD. While it's only USB 2.0 (480mbps) it's still a great addition to your kit alongside a USB-C Multimeter (which I've written about here). Seen here being used with a Zendure Supertank

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