Was due to the many recessions very skeptical about this product to purchase at all, as it has often been a problem that apparently already used batteries were sold as new. Property me then but still decided to buy the battery, especially the absence of reasonable alternative. Shortly after the installation already came the disillusionment, a program for the Mac, which can display the number of charge cycles the battery has been displayed 25 charge cycles, and sold as "new" in a battery of as. Bottomless impudence! Battery was returned and reclaimed money can buy not recommend anyone.