For iPhone 6/6s Charger Case, BSWHW 3500mAh 4.7 iPhone 6/6S Portable Protective Charging Case Extended Rechargeable Battery Pack Juice Bank with Pop-out Kickstand(4.7 inch) - Black This powerful battery case can more than double the usage time on your iPhone 6/6S. Charging method is of built-in Lithium battery. Ultra Slim External Power Source for your Apple iPhone 6/6S. External battery charger charges and carries a spare battery for on the go use when your phone is running low on battery life. Swap your low battery for a fully charged one. It is suitable for the standby power supplies for traveling, tourism, long distance business in car and ships, field work or power outage environments. It is luxury, elegant, small and portable. Extra Battery Charging Station, 3500mAh Standard Battery . *Cables are NOT included.