Many companies are coming out with portable battery packs, battery cases, and battery chargers. (techwelike.com)
It's possible the company will offer some sort of portable battery pack, though you may have to rely on available wall chargers if your battery life begins to run low. (mic.com)
An S6 battery case can augment or replace other charging devices, such as a car charger or external portable battery pack. (heavy.com)