With an incredible 4000 mAH capacity, this powerbank is extremely powerful. In fact, it is so powerful that it can fully charge most smartphones with one charge! Making it a must-have if you’re out and about for the day and know that you will be using your phone frequently. The designer allows you to upload any image from your desktop or social media, position it correctly and then add any text. Allowing you to create a powerbank that makes the perfect gift or treat for yourself.