Renogy E-GO Portable Power Pack External Battery Charger for Cell Phone and iPhone 10,000 mAH (Black) 4-5 cell phone charges on most cellular devices including the iPhone Come with a micro USB cable that can be connected to an AC/DC USB Adapter 4 LED indicate remaining power when you shake it Built in Li-ion Battery for fast charging speed Can also be charged with the Solar Charger for maximum portability