As highlighted by Nintendo Life contributor and Serebii.net webmaster, Joe Merrick, when you run out of energy, you'll have to wait "just under" seven days (6 days and 23 hours, to be exact) for a full charge or can fork out 1000 PokéCoins if you want to speed the process up.
"It takes just under 7 days or 1000 coins to fully charge your HOME transfer"
Serebii.net notes how transferring a Shiny Legendary Pokémon will use up "all" the energy in the GO Transporter and you can find out more fine details over on the website's Pokémon GO to Pokémon HOME Transfer page.
As you might have already guessed, there are mixed reactions about this within the Pokémon community right now. Keep in mind, if you don't want to pay for the premium PokéCoin currency with real money, there are other ways of earning it in-game.
So, what are your own thoughts about all of this? Tell us in the comments below.