iPhone 6s Battery Case, iPhone 6 Battery Case - Boostcase Detachable Charging Case for iPhone 6/6s [MFI Certified] [Black] The high-efficiency & powerful 2700mAh battery adds more than 100% additional battery life for your iPhone 6/6s The Boostcase patented two-piece modular design includes a protective hardshell case and a detachable battery sleeve. Attach the battery in a simple click when you need it, remove it when you don't. So you can enjoy the slim form factor of your iPhone 6/6s without adding bulk. Features a Micro USB input port and Apple lightning output, the Boostcase iPhone 6 Charging case enables data and power pass-through. You can charge & sync your iPhone 6/6s with the battery still on via the included Micro USB cable. Boostcase is Made for iPhone Certified using only the original Apple lightning port and has passed stringent lab tests to ensure reliability and compatibility to iPhone 6/6s. The Boostcase iPhone 6s charging case also has the following functions built-in: Power On/Off control, touch-activated LED battery level light strip, charge & sync, full camera access, and included headphone adaptor.