Powerocks Nimbus 6000mAh Portable Charger - Sky BlueThe original portable battery charger, made of the highest quality materials, and the best lithium ion batteries. Conveniently small, and surprisingly powerful, Powerocks will charge your electronic devices safely and quickly when life takes you away from an electrical outlet. Its 6000mAh battery capacity gives you enough power to fully charge most smartphones up to four times. Whether it is for work, play, or safety, always keep your Powerocks handy