Flamingo 305 Energizer, 3800 mAh Battery Charger Case for iPhone 6 (Blue) Capacity: 3800 mAh Input: 5v-0.5A Output: 5V-0.5A Dual-Injection: Shock-resistant band adds an extra layer of protection. 4 LED Status Indicator: Indicates charging mode and current battery level. know before you go! Micro-USB Charge and Sync: Charge and sync your iPhone to iTunes without removing it from the External Battery Charger Case. The battery case uses a micro-USB input port to enable power and data transfer. Stand-by Mode: By pressing Using the stand-by switch will give you even more total battery life, as the iPhone uses additional power to be on a constant charge.