Flux Chargers - Best Portable Phone Charger for iPhone and Android %u2013 Portable Chargers, Power Banks iPhone and Android - Flux Chargers. We have all come to the end of a long day with a battery on our phones that is dying. Mine usually dies mid-evening of a long day at Disney. I have tried all sorts of portable chargers, and, while they work, the good ones are heavy, bulky, and I really don't want to carry them around all day. There is nothing I can do about modern phones that don't have removable batteries; but, the Flux charger is the next best thing. This thin, light little charger has 3,000 MilliAmps of charge capacity, and you can plug it in and carry it in your hand or pocket while it is recharging your phone. Under $30, this is a no brainer. It has twice the capacity of the round, cylinder charges you find in the stores these days, and this one is FutureLawyer recommended. So, don't run out of juice and have to run around searching for a charging station. Get a Flux and stay in the game.