Meet the Reeljuice Portable Charger: a cool power bank with a 4 feet cable that lets you charge your smartphone or tablet faster. It comes with MFi Lightning and micro USB connectors. You also get a removable USB charging module.
Reeljuice does not require extra cables to work. It can deliver up to 2.1A of power to your smartphone, With pass through priority charging, you can charge the Reeljuice and your device simultaneously. Costs under $100 at this time.