ZeroLemon's battery cases and battery pack will keep you going when there's no outlet around

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What do you do when you are out and about, away from an outlet for an undetermined amount of time? Especially if you happen to need your screen on for long periods — like using Maps for navigation, for example. Well, you've got two choices — either grab an external power bank, or go the 2-in-1 way with a battery case, which both protects your phone from ...