The Tylt Energi Sliding Power Case gives your iPhone up to 10 more hours of battery life, and you can remove the battery when you need less bulk.
The iBattz Mojo Hi5 Power Bank battery case can more than double the life of your iPhone 5, but at the expense of looks and convenience.
The Mophie Juice Pack Helium battery case for iPhone 5 comes in a sleek design that's a pleasure to hold, but its battery life could be better.
The myCharge Freedom 2000 iPhone 5 battery case offers satisfactory endurance for the price, but the design is more awkward than the competition.
With more than 10 hours of battery life, the Lenmar Meridian iPhone 5 Battery Case offers excellent endurance in a soft-touch design.
The Energizer XP18000A can power your notebook, phone and other gadgets for hours and doubles as an AC adapter.
This versatile mobile power supply lets you charge a notebook, as well as two USB devices, simultaneously.
Offering quick power-ups in a portable package, the Portable Mat & Powercube is worth the splurge thanks to high performance and compatibility with most popular smart phones.
With its highly portable size and relatively short charging times, this affordable solar charger will brighten your day.
This slick-looking solar charger/case more than doubles your iPhone's battery life, but it needs more time in the sun than the competition.