Battery cases

Won't blow up ballons, will blow up battery life

Mophie Juice Pack Helium

Lately the scientific community has been up in arms about a global shortage of helium gas -- a problem they say is ballooning out of control due to government fire sales of the stuff in the mid 90s. Thankfully, the new Mophie Juice Pack Helium for iPhone 5 ($80) isn't actually made of the stuff. The case is a full 13% thinner than any other prior Mophie juice packs, but adds an impressive 80% more battery life to the iPhone 5.