In a world of mobile devices, one thing we all could use a little more of is power. With the rise of gaming, maps and augmented reality, phone and tablet batteries are going to need to step it up on capacity, but for now, there’s portable charging docks. Batteries come in a whole array of sizes, shapes, capacity, and amperage options. Some charge one phone while others can be used to charge a phone and tablet simultaneously. We’ve gone through and collected the best ones for Pokemon GO players. All of these are small enough to fit in your pocket or a small bag, are lightweight and work for both Android and iPhone.

Anker PowerCore+ mini 3350mAh

Pros: Inexpensive, adds roughly one full charge to most iPhones and Android phones, PowerIQ Fast Charging up to one amp

EasyAcc Monster 20000mAh Power Bank

Pros: Charges up to 4 devices at once, Fast charging for phones up to 7.5 times, Smart shut-off prevents over charging, Duel input reduces charge time by 50%, small built-in flashlight, 18 month warranty