How to replace your iPhone 5 battery - iFixit Repair Guide
Amazon.com: 1800mAh Battery for iPhone 5S(Upgraded),Vancely Replacement 0 Cycle Battery with High Capacity for iPhone 5S with Full Remove Tool Kits (Only for iPhone 5S) - 12 Months Warranty : Cell Phones
How To Remove IPhone 5S / 5C Battery Properly - Best Apple Authorized iPhone Repair Solution CA
Genuine original Apple battery to repair your iPhone 5s