Depending on how much you use your iPhone, a juice pack might be a good thing to lug around. The new Mophie Juice Pack Helium is made to function with the iPhone 5, and it’s very slim, 13% slimmer than their Juice Pack Air, which was made for the iPhone 4/4S.
Read more @ GeekAlerts
In my experience, battery packs for smartphones can be quite useful, though they have a tendency to add a lot of bulk to your phone. That being said, if you run out of power very often, a battery case can still be a wise precaution. This new battery pack from Mophie aims to boost battery power for the iPhone 5, while not adding too much weight or thickness.
Read more @ Technabob