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I have to say that there are bad third-party batteries out there, and I'm speaking from experience. There are a few good ones though and the last I've tried for my 5S is a battery kit from Scanditech. Awesome kit, easy to follow guides.

Oh, and since you asked about performance, no difference at all. There might be a difference in performance but too insignificant to notice.
 
I have to say that there are bad third-party batteries out there, and I'm speaking from experience. There are a few good ones though and the last I've tried for my 5S is a battery kit from Scanditech. Awesome kit, easy to follow guides.

Oh, and since you asked about performance, no difference at all. There might be a difference in performance but too insignificant to notice.
Of course, there are some excellent battery manufacturers. I am also happy to give my advice to my friends.
 
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