David Wu, a venture capitalist at Maveron, wondered how the start-up differed from competitors in the charging space.
"Ours is really one of the only truly portable solutions," the founder told CNBC, adding that "what you see out there in the market right now is the lockbox station (and) the charging pole that requires people to stay tethered there."
Also, by utilizing both rental and purchase revenue streams, Carrigan said MobileQubes provides consumers with a high-quality charging solution at two different price points.
But Angel investor Nat Burgess questioned when the kiosks would become profitable.
The start-up will would not disclose specifics on its user base, but Carrigan said MobileQubes is a high-margin business on inventory, and "to keep an R.O.I. timeline of less than a year, we really only have to generate about four transactions per day."
In addition, Carrigan told CNBC the start-up leverages the screens and kiosk frames for digital advertising. The founder said MobileQubes has secured national contracts with major venues and brands such as Amtrak, Hyatt, Caesar's Entertainment and even the NFL.
The New Orleans-based start-up self-funded $800k, and recently closed a $1 million bridge round.
Carrigan said MobileQubes plans to roll out over 300 units throughout the U.S and internationally in 2016.