Here's latest results: 2nd charging cycle. 1st one was discharged completely (intentional decision). This time charged to the maximum, left in a sleep mode. Activated after 5 h to 97%. As I started using it (Messages, apps such as Twitterrific, Tweetlogix, System Preferences, Mail, no internet browsing whatsoever) it began dropping the charge at 1% per several minutes and fell down to 84% before putting it to sleep after 1 hour of usage. I woke it up after some time, the % still where I left it but nevertheless it's supposed to withstand more intensive load - I'm not streaming games, TV shows or using it on heavy YT HD 4K videos! Heading to the nearest AARS.