Unfortunately, it ballooned the first battery after about 6 months to strong, so that the touchpad my MacBooks could no longer use. Completed a short e-mail to Patona, Rücksendeschein and a few days later I had a new battery!
The holding now! No sign of inflation! Has a good maturity and still sufficient power. Sits well in the MacBook, but not perfect - at least nothing wobbles! Since it's on the bottom does not interfere with the gap yes!