MacBook Pro 2013 not recognizing new battery shortly after install.
The Ifixit guide rated battery replacement for this laptop "very difficult" so I paid an experienced but unauthorized Mac repair guy to do the job. The battery seemed fine at first, but then the Mac didn't recognize it. Coconut verified this information. The repairman deflected the blame and said that it must be because of a bad motherboard. Suggestions? Might it be the battery connector?