Pokémon GO may drain your phone's batter power like it does your free time, but now it doesn't have to. Sparkfun user Nick Poole has created a 3D-printed pokédex that adds an extra 2600mAh to his Samsung Galaxy S4, which means you can make your own and carry around the portable battery pack to find the Pokémon you were destined to find. Find Nick's tutorial here.

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