im part of a guide group that is going to the essex international jamboree (a really big camp) , well i also have an iphone.....and i dont want to not take it with me. my phone runs out of battery incredibly quickly and i really want to be able to use my phone. i have surfed the net to see what portable chargers there are. i dont care what price but does anyone know somewhere online i could get a portable charger for iphone??!?!?