How Can I get an offcial OEM iPhone 4S Battery?

[shacodolas]

Hi, guys, my iPhone 4S is out of warranty and the battery drain too fast, I plan to replace a new battery for my 4S, but I don't know how I can buy an real offcial OEM iPhone 5 Battery(I don't want to get a fake battery (my friend told me the fake battery may explode),
Any recommends?

 

[Macman45]

All Apple stores or Apple re-seller will be able to supply you with a battery...Apple will charge you to fit it and won'r just supply one, whereas a re-seller will.

 

[nilzi]

This is an article that I found how to distinguish the original and fake battery for phone, hope it can help you:
http://www.etradesupply.com/blog/identify-original-fake-cellphone-battery/

 

[pauly800]

How much does a genuine iphone 4s battery cost? And where can i get it?