Hello thar! I have seen that you can buy a Switch AC Adaptor as accessory. This is a simple USB-C-wallplug-charger, as far as I see. Let me go into lengthy explanation now. On Nintendo.com you can find the Switch Dock set, including a Dock, the exact same AC Adapter with USB-C and HDMI cable. It specifically says that these items are all included with the Switch, but this is if you want to dock your switch to multiple TVs without carrying the dock hither and tither. The Switch itself also has a USB-C connector. So can I assume that you power the Dock as well as charge the Switch's handheld battery with this USB-C AC Adaptor and if yes, couldn't I just use some USB-C cable at some USB charger I have flying around anyway because every smartphone nowadays comes with at least fourteen of them? Case made.