Can you change the iPhone 5S battery ? Yes.
How Much Does It Cost?
The battery can be replaced on the iPhone , how much it costs depends on were you have it replaced . A Apple store may cost you upwards of 80 dollars . A repair shop may be less . If you do it yourself it might cost you less than 20 dollars for the battery .
Where to buy iPhone 5C battery ?
You can buy the original battery online from amazon, iphone-battery.com .