Replaced battery failing after 6 months
Hello to whoever reads this and thanks for any advice. I had my battery replaced late 2018. My iPhone was nearing the 2 year old mark and I wanted to take advantage of the battery replacement program before my Apple Care ran out. I had read all the reports about battery throttling and it spooked me into action. I figured that a replacement battery would give me the opportunity to use this device confidently for a few more years. Low and behold, the replaced (2nd) battery is far worse than the original battery. Sudden unexplainable energy drops, shutdowns, nonsensical stats in the battery usage graphs, none of these issues occurred with the original battery but now plague my iPhone. I called support and the technician said that I need a new battery as it did not pass a diagnostic test. Since the current battery is only 6 months old, isn't that an indication of a faulty repair? Am I being fleeced here? Should a purchase a new battery and run the risk of another problem a few months from now OR research the market for a new device now. Thank you, any advice is much appreciated.
iPhone SE, iOS 12