Portable Charger, UNU Superpak 15000mAh 4.4A External Battery Pack Power Bank w/Micro USB Cable for Samsung Galaxy S9, S9 Plus, S8, S8 Plus, Note 8, iPhone X, 8, 8 Plus, 7, 7 Plus and more [Black] WORLD'S SMALLEST 15,000 BATTERY - The portable charger is small enough to travel in a backpack or large purse and is perfect for on-the-go reliability while boasting the ability to re-charge almost any USB device including tablets and smartphones. HUGE CAPACITY - 600-700% additional power for smartphones like iPhone 6S, iPhone 6, iPhone 5S, and Galaxy S6 and S5, 400-500% added power for large screen phones like Galaxy Note and iPhone 6 Plus, or almost 120% to tablets like the iPad or Galaxy Tab. Perfect for people with multiple devices. SAVE TIME CHARGING - Featuring uSmart charging technology, the Superpak can automatically identify your devices to effectively maximize the output to charge most electronics at super fast speeds (Max 2.4A). 3-USB Outputs feature a total 4.4A output power. CHARGING HUB - Use the Superak as a charging hub to simultaneously charge the Superpak as well as three other devices for power that can last up to a week. 1-YEAR WARRANTY - UNU takes pride in every product it produces, that's why we offer a 1-year hassle-free warranty on the Superpak.