Powerology VoltStream 20000mAh Power Bank - With its high 20000mAh battery capacity, it provides your smartphones, tablets, and other digital devices with uninterrupted power for days. Thanks to its fast and efficient charging technology, it restores your gadgets` energy in minimum time, saving your valuable time. Multiple output ports allow you to charge more than one device simultaneously in a safe manner. Its ergonomic, lightweight, and compact design makes it highly convenient to carry for daily use, work environments, and travel. The built-in smart protection system fully safeguards connected equipment from overvoltage, overheating, and short circuits.