Finally got a new battery for iPhone

[pcslookout]

I know the warranty for the battery is 90 days but how much longer can you extend it with Apple Care please if at all ?

 

[Commodus]

I know the warranty for the battery is 90 days but how much longer can you extend it with Apple Care please if at all ?

You can't extend the warranty on the battery, just the phone as a whole. It's not surprising why Apple would do that, since it'd both be complex and would likely have people asking for warranty replacements when they're really just encountering natural behavior (I've seen people who can wear out batteries very quickly). The 90-day period is really just to ensure the battery isn't defective.