So you want to be able to charge multiple smartphones and tablets on the go? The SmartQuad 4-Port USB Charger can help. It is a universal 4 port charger for iPhone, iPad, Android, and other USB devices. It offers smart detection to intelligently charge your gadgets. The design is compact and portable. You can get one of these chargers for as low as $20 but you have to support the project early on Kickstarter.