Question about battery replacement

[nitrocosis]

So I'm wondering how to replace a battery? Do I need to have Apple care?
What prices am I looking at (with/without Apple care)?
I'm sorry if this question is obvious, I'm new to iPhones

 

[QueenTyrone]

Which device? I think it's 80 without ac and free or much less with ac

 

[Applejuiced]

iPhone Owners
Your battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers a battery service for $79, plus $6.95 shipping, subject to local tax.

 

[Ghostbuster386]

"Repair pricing depends on the diagnosis and your coverage under warranty or AppleCare+. Other power issues require further testing before we can give pricing."

https://support.apple.com/iphone/repair/battery-power

 

[mi7chy]

Free under warranty if less than 80% capacity or with Apple Care. $79 out of warranty. Applies to all models.

https://support.apple.com/iphone/repair/battery-power

 

[nitrocosis]

And I can do this just to have a new battery whenever? As in, does it need to be defect?
Assuming I want to maintain my phone for longer than 1-2 years, without sacricing battery capacity, that is.

 

[Applejuiced]

No, it needs to be under 80% of specs to ask for a replacement battery.