Here is another cool gift idea for Marvel fans. The infoThink Thor Hammer Power Bank has enough juice to charge your smartphone multiple times. It also comes with 7 lighting effects and sound. It has a zinc alloy construction and weighs only 400g. It has a LED indicator light to show how much battery you have left.
The infoThink Thor Hammer Power Bank has 10400mAh capacity. It has an output of 5V/2A. You can find out more about it here.