Skur Bærbar dom macbook pro late 2011 battery cycles i gang forkorte Advent
How-To: Find your MacBook's battery cycle count and learn what it means about its battery life - 9to5Mac
Find out if it's time to replace your MacBook's battery - CNET
Amazon.com: NinjaBatt Battery A1278 A1322 for Apple MacBook Pro 13" [Mid 2012 2010 2009 Early 2011 Late 2011] - High Performance [76.56Wh/11.6Vv] : Electronics
How To Test A MacBook Battery To See If It Needs Replacing And Replace It | Macworld