There is a whole lot of not being stationary in the Pokémon world. From the age of ten you're practically a vagabond. You don't really get too much time to stop and smell the coffee, or charge your phone, or both. If you're a mover and a shaker, you need a charger that can keep up with you and give you some extra life to your electronics. If you need that Pokédex to identify something and it's out of juice... well, that sure would suck.