Energen [Apple MFI Certified] Rainbow Cell Phone Rechargeable Battery Case for Iphone 5/5s MFI Apple 2400 mAh Replacement & Portable Extended Backup Power Bank (Fits All Versions of Iphone 5 & 5s) (Green) Double your battery capacity and stay unplugged for twice as long. Streamlined design eliminates bulk to provide extended battery life along with unobstructed, day-to-day protection for your iPhone 5/5s Comes with a handy built-in kickstand. Forward-directing audio ports enhance the media experience on your iPhone 5/5s. Apple MFI Certified and backed with our12-month hassle-free warranty. If there is any problem with the product, we offer top-notch technical support or an exchange.