American Airlines tightens rules for portable chargers amid fire concerns

American Airlines this week will introduce new restrictions on portable chargers that passengers can bring on flights for their electronic devices. Starting Friday, American Airlines customers may carry only two power banks, which must be visible to airline personnel while in use on flights. When not in use, the chargers must be within a passenger's reach on the aircraft and may not be stowed in an overhead bin, the airline told CBS News. …