iWALK Link Me&reg; 3000mAH Rechargeable Docking Case Friendly Backup Battery for Apple iPhone 6 6 Plus 5s 5c 5 iPad and iPods and all devices with Lightning port - Black Extended Lightning connector works with most cases. On/off button. Lithium-ion power cells provide high capacity in a compact size. LED Battery Indicator. Charge Link 3000L and device simultaneously (passthrough)