Slip it into your pocket or purse when you’re on the go – that is literally how mini and lightweight PowerTube is! The PowerTube’s super compact, handheld design makes it the most preferred companion for your power hungry mobile device. With a capacity of 2500mAh, charge an average smartphone to full capacity without having to wait around near a power outlet. Blue and red LED lights indicate PowerTube’s charging functions, making it the convenient choice. The Power Bank comes equipped with safety systems that keep you fully protected against shorts, surges and other dangers.