The second type of atelectasis is called chronic atelectasis which may either be rounded atelectasis or middle lobe syndrome. Rounded atelectasis involves the slow collapse of the outer portions of the lung which is secondary to scarring of the pleura that covers the lungs.
On average, a fully discharged blu Original or blu Premium battery will take approximately 30 minutes to fully recharge via the pack or the USB charger. report this answer. Answered by kgb agent Christine R on Thursday, February 14 2013 at 02:59PM EST.
1 It takes approx. 1 hour to charge and operating time is between 20-30 minutes however before recharging please wait about 15 minutes to let the battery cool.  PLEASE MAKE SURE that you always disconnect the USB cable and shut the charging compartment before you play with Boomer the incredible Zoomer Dino.