OK I have a little info on replacing batteries in a iphone 5. I have replaced my iphone 5 battery about 9 times cause for some reason when it runs out of juice it will not charge again. If it stays charged there is no problem. Replacing the battery is a very easy task, the only slightly dangerous part is popping up the screen from the home button end. You need to make sure you keep the ear piece end close to the phone as that's where the ribbons attach. Just you tube a video and get a replacement battery off ebay