Changes made to Apple ID

A request for another Apple ID password is often caused by updates to apps/purchases that were made when using the other ID. Those purchases are tied to the other ID and can't be transferred. One option is to delete the apps/purchases made by the other ID and download them using the new ID if desired. After deleting the apps, it may be necessary to restart the device/computer before you can download the apps again. If necessary, check your purchases history to see which apps/purchases weren’t made by the current ID. 

Purchase History Review.  *

so my battery on my phone is making my phone die faster so at like 8:06 my phone was at 100% and now it’s 10:34 and it’s at 8% and now i don’t know how to fix the problem cause my phone i mean it is a iphone 6s and i could probably just need a new phone. so apple could i give you my address and you send me a new phone.

Did you complete all the steps mentioned in this article?

What to do after you change your Apple ID or password - Apple Support

Did you create a completely new Apple ID or just changed the Mail Address?