Has anyone tried buying a replacement battery for a iPhone 6s off eBay? Was it easy to replace and did it improve the phone? My battery goes flat within an hour with minimal use but other than that the phone is in great condition.

So while I enjoy my old 6 plus from 2014. It’s at a point now where the phone will not work without being plugged in at all times.

It’s been at 51% battery health for years now, I’ve wanted to replace the battery myself; but the glue tabs are completely gone. I bought this one second hand back in 2016 after my 2014 model broke.

I feel like the $50 price tag to replace an old phones battery like this is very steep; seeing as the phone is barely worth if that.

I saw another poster said they were offered a phone replacement instead. Mines pretty badly beat up from previous owner aside from screen replace I did a few years back.

Anyways I’m curious how others experiences have been at replacing older phone batteries like this through apple etc. Especially the 6-line.