Top case replacement, when is it needed?
I have a early 2015 13" MBP Retina that I purchased 2 years ago. The laptop has been working perfectly fine for the past two years but a couple of days back the battery suddenly died. There was a cross sign on the battery icon and it said 'Battery not available'. I contacted my local authorised apple service provider and was told that the battery was dead and i needed to get it replaced. I had my doubts because the battery was working fine just the day before with 5-6 hrs back up and there was no physical damage to my laptop. So I contacted another authorised apple service centre and was told told that the entire top case needed replacing. After coming back from the second service centre the battery status is 'Replace now', but they say I need to change the top case.
I am very confused. The laptop is in excellent condition and works just fine on continuous AC supply even now. Should i replace the topcase? or is the battery?
MacBook Pro (Retina, 13-inch,Early 2015)