E LV iPhone 6 Battery Case Cover Case 3600mAh (Micro USB Input for Changring and Lighting Output). This Power Case sports a powerful 3,600 mAh Capacity Smart Polymer-Lithum battery that can significantly extend your iPhone 6 Battery life while maintaining a slim profile after installation. This case is specially designed for your Phone. Stylish, practical and provides great protection. It"s a great phone companion! Non-OEM Accessory Device NOT included. E LV® is a registered trademark protected by the US Trademark Law.