There are a lot of battery packs, battery banks, or portable chargers in the market. But very few of them support quick charge capability. If you have a HTC One M9, Galaxy S6, Galaxy S6 Edge, Galaxy Note 5, LG V10 or LG G4, then you'll want to pick up a battery bank that supports quick charge so you can enjoy more time with your phone and not constantly wired to the battery pack.
The Samsung Fast Charge Battery Pack is one of the few battery packs that supports Qualcomm's Quick Charge 2.0. That means it'll charge your phone almost as fast your phone plugged into a quick charge wall adapter - up to 50% faster than a non-quick charge battery pack.