I recently brought my 2015 13" MacBook Pro to an Apple center to get a screen replacement for Staingate. They did it for free. Before this replacement my MacBook was doing really good actually.
After that, battery issues started. Sometimes MacBook doesn't boot-up or doesn't wake-up from sleep saying that battery is dead. That is not true obviously, when I get to that point I need to plug it to the MagSafe, or do a SMC reset, or if none of the previous work, a PRAM reset. Then it will work perfectly for a few hours (or days, randomly).
CoconutBattery states the battery has a good health but I noticed (before doing an SMC), that battery was disappearing and reappearing suddenly from battery, as if it doesn't exists. I did a few hardware checks at boot ant they always looked perfect but one time in which I got PPT001 error (battery not detected).
I can't get to have a permanent fix and I wanted to ask someone else before bringing it back to the Apple center as it's a bit far away from my home.