Each passenger taking flights departing from Hong Kong International Airport may carry no more than two power banks on board and is strictly prohibited from recharging these devices during the flight, the Civil Aviation Department (CAD) of Hong Kong said Saturday. The new rules, which follow updated requirements from the International Civil Aviation Organization, took effect immediately. Flight crew members will still be permitted to carry and use power banks in accordance with their aircraft’s operational requirements. In March last year, the CAD barred passengers on local airlines from using power banks to charge electronic devices or other power banks on board. In addition, power banks must not be stored in overhead luggage compartments