If you aren't familiar with the controversy over Samsung's decision to make the S6 and S6 Edge's batteries non-replaceable, you probably don't follow Android news very much. Because you can't just swap out another battery, more people have gotten interested in figuring out how to ensure they have an operating phone after a long day. One method that owners of many smartphones have been using for years is the battery case. While there are tradeoffs involved in putting a case on your phone that is big enough to house a battery, there is a payoff too: no need to find an outlet or juggle wires when your device would normally be running out of juice.

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