Idea: If you do plan on recharging in city, get an 18w wall charger with two ports. Youll have the capacity to charge various units considerably quicker . Also be certain it really is slim in profile so that you wont just take up two slots. The battery potential is http://chancebvndu.thenerdsblog.com/16344359/5-simple-techniques-for-portable-charger-for-iphone