Origineel bericht door: Mac Win ,
My MacBook Air mid-2013 i7 1.7 8GB (Battery Dead) runs OK under macOS 10.12.6 and earlier macOS. Under macOS 10,13,6 works OK but Trackpad not detected. Under macOS 10.14.6 runs slow with circling ball often and trackpad not detected. Under macOS 10.15.7 and 11.0.1 runs OK but trackpad not detected. Apple Support said dead battery is cause of Trackpad not being detected. Finding a good battery that last over 1 year (even if rarely used) for older Mac is a problem since they are all refurbished. Twice I bought on eBay $25-$30 battery for my MacBook Late-2008 I rarely use, both batteries never charge 100% and will die in about 13 months after 1 year warranty expired and replacement is the same anyway.