The DigitalFoundry gang has confirmed the use of USB battery packs to charge your Switch on the go. If you're really worried about the amount of time the battery gives you on the go, you can grab one of these USB battery packs and worry a lot less!
That's self-explanatory, as USB-C is a standard.
Don't know why it needs to be confirmed (just like the 'compatible with iPhone and iPad' on every package of a headphone-with-3.5mm-plug here in Germany)
If you're going to purchase a battery, make sure it supports a 2.1 amp output.
This is the amperage required by almost all tablets, and I imagine the Switch will be no different. your lipstick iPhone charger probably only outputs at 1 amp. So spend a little extra cash on a higher amperage.
This is just speculation based on my experience with tablets and portable battery chargers.
Yes, USB-C is a standard, but it supports multiple voltages. If the switch was unable to charge at 5V, like the new macbook for example, then a standard USB 2 battery bank would not be an option. Thankfully we now know that 5V 2A battery banks can do the job. Nice one, Nintendo!
Hope a third party makes one that can just snap in to place and be hidden behind the switch. No visible wire.
Agree with this 100%. Something nice and simple that is easily removable. Kickstarter anyone?
How about this? http://www.thingiverse.com/thing:2105260