All of the power banks have one thing in common, they're always there for you when your smartphone battery dies at the end of the day. It's the new version of a lifesaver.

The problem with portable chargers in general? There are a lot of them. Some are better than others, with many of our recommendations balancing battery capacity, safety and a svelte size for ample power.

Mini Smart World provides you the top portable chargers broken into compact and high-capacity.