Tylt Energi Rechargeable Travel Charger with Built-in Battery and Lightning Connector for Smartphone/iPhone/iPod/iPad, 4.75-5.25V Output Voltage

The Tylt Energi Rechargeable Travel Charger is a wall charger with a built-in 1800mAh battery. While you are charging your phone in the wall the internal battery is also getting a charge. When you're on the go take the Energi with you to provide power when you need it without the need for an AC outlet. The built-in Lightning arm allows you to charge your phone without having to carry extra cables with you. The folding AC prongs make it easy to travel and carry with you.