When we reviewed the Galaxy S6 last month, we found the battery life to be about on par with most of the other flagship devices that have launched this generation. The fast-charging adapter certainly helps alleviate this issue if you happen to be near a wall outlet, but what if you're on the move all day and need your phone to last, no matter how much stress you put it through?
For those days, you probably wouldn't mind having a battery case to back you up, and as luck would have it, Amazon has a great one on sale right now.
Double your Galaxy S6’s battery life with this cheap case from Amazon