"Companies like BlueSmart, Raden and Away make luggage that includes GPS tracking, can measure its own weight, and yes, charge phones. But for all those features, these pieces of luggage need power in the form of lithium-ion batteries, which are generally seen as fire risks on planes. Last year, the FAA noted that their testing of plane fire safety showed that 'current cargo fire suppression systems cannot effectively control a lithium battery fire.'"
The rest of the story:
Your suitcase may charge your phone, but that's useless if it's not allowed on a plane: Why You Shouldn't Buy 'Smart' Luggage by David Grossman (Popular Mechanics).

Follow up: Raden and Bluesmart are already gone: Smart luggage firms close because of airline battery rules (BBC News).