Kerry Wan/ZDNET Follow ZDNET: Add us as a preferred source on Google. ZDNET’s key takeaways American Airlines passengers are limited to two portable chargers.  Portable chargers must be visible or within reach for the flight.  Take care to ensure you follow specific rules and regulations.  American Airlines introduced new restrictions on portable chargers that passengers can bring and use in-flight for charging their electronic devices, as of May 1. The new rule, which is already in e...