So here is the lineage of my 13” MacBook pro-1278 keyboard stopped working used a spare until I purchased a new key board. Took it down installed and started up keys 1-9 still IN-OP shortly after maybe two uses and a software update it would not TURN on. I noticed a swollen battery so quickly bought a new one with no luck. I replaced the charging port thinking it was junk because it showed it was charged even when battery was unplugged with no luck still shows green. I have tried multiple charging units with the same outcome.