MFI Apple Certified - ibattz Mojo Armor S Removable Battery Case for iPhone 5/5S - BLACK - 100% Additional Battery Life (2200mAh) (fits all models of iPhone 5/5S - AT&T, Sprint & Verizon) Easy Battery Change,Modular Design Eco-friendly with battery replacement instead of changing the entire battery case. All other lithium ion battery case have limited charging lifespan of 300-500 cycles. Standard Battery Module Well-rounded protection Fast Charge