Chosen Solution

i read the replacement battery for the mid 2012 macbook air model (13”) could perhaps be not properly recognized by macos el captain or sierra. Is this issue also present in the newest mojave macos? thank you !

Where did you hear this FUD ?? The battery communicates with Systems Management Computer (SMC) logic and then SMC talks to the systems OS. So the SMC services isolate the battery from the OS so the OS has no knowledge of the battery directly. As long as the battery is properly designed and built this is just not true.