Today's smartphone batteries barely last a day! Make battery-life a concern of the past with the Qi 2-Go, a wireless 4000 mAh power bank and Qi charger in one. Simply attach the Qi 2-Go to the back of your Qi-enabled smartphone by applying minimal pressure to activate the suction cup technology. Power the Qi 2-Go on and let it effortlessly charge your smartphone without the need for cables. The Qi 2-Go also has a micro-USB port to recharge the power bank and a USB port just in case you need to charge another device via USB. Wireless charging capabilities only compatible with Qi-enabled devices.