My early 2015 MBP started intermittently not charging after Christmas. I did have Apple Genius Bar replace the battery 3 years ago. I have 2 chargers and neither work. Reset SMC with no luck but fans ramped without slowing down. Coconut Battery (as well as MacOS battery in menu) doesn’t recognize battery installed. Battery is now flat and, when pressing power on, the “connect charger” displays but no light on MagSafe. Not wanting to replace it at this point with the cost of a replacement, so I‘ll have to take it out for repair with me this summer. $60 for shipping out for repair is steep, especially when not knowing what the repair will cost. Any ideas what I could be looking at?