It has been so many times my iPhone 5 has drain it's battery so much and I need to use a cell phone for school. I had talked to Dell0304 as know as Ryan in his cell phone club on Facebook and he has a portable battery charger that he uses for school, actually he had a Samsung Galaxy S4 before he switched back to iPhone.
There is reasons why I had to bring my AC adpater plus the USB cable to school just to have energy left to contact someone if something happen. I had been with smartphones since July 2011 along with my LG Optimus GT540, these days I had become with very heavy usuage with my iPhone 5 so I really need one of those portable battery chargers. The iPhone 5 is still execellent in terms in specs and the battery even it lasts up to 15 hours in standby and usage time but I'm not complaining about the battery.
There are very handy as it sounds! I can just charge up the charger through my computer and grab it for school in the next day just for low battey reasons.
There is reasons why I had to bring my AC adpater plus the USB cable to school just to have energy left to contact someone if something happen. I had been with smartphones since July 2011 along with my LG Optimus GT540, these days I had become with very heavy usuage with my iPhone 5 so I really need one of those portable battery chargers. The iPhone 5 is still execellent in terms in specs and the battery even it lasts up to 15 hours in standby and usage time but I'm not complaining about the battery.
There are very handy as it sounds! I can just charge up the charger through my computer and grab it for school in the next day just for low battey reasons.