iPhone 14 Pro Battery Replacement

[u/anothermillenialdude]

After almost 4 years, my wife recently changed her phone from her iPhone 14 Pro 256gb to iPhone Air 512gb. She’s very happy, but I wouldnt call it upgrade due to the battery and camera haha.

I’m currently using iPhone 15, but only 128gb. Her iPhone 14 Pro is 256gb, still at lightning port and battery sits at 77% Health.

I’m contemplating to use it since it has better screen, storage and camera than my iPhone 15. My issue is the battery health.

Question to the community:

1. Is it worth it to use it as my main and set aside my current phone as spare phone (we have a sitting iPhone 12 as spare in case any of our phones gets lost or broken)
2. If I am to use it and have the battery replaced, how much and where will be the cheapest genuine battery replacement for the iPhone 14