However, I do plan to leave a micro USB cable as well as a USB-A to USB-C cable on the charger at any given time. This will let me charge up my old Kindle Voyage when necessary, and the A to C ...

Charge your Kindle fully with the Micro-USB cord included in the box and an outlet adapter (not included — we recommend AUKEY's Wall Charger). If for whatever reason your Kindle isn't charging ...