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Mophie iPhone case delivers extra power and storage

The new Space Pack can juice up your iPhone 5 or 5S and kick in additional storage of 16GB or 32GB.

Screenshot by Lance Whitney/CNET

Looking for an iPhone case that offers power and capacity at the same time? Mophie has a new case that can perform that trick.

Shipping in March, Mophie's Space Pack includes its own 1700mAh battery that can pour more juice into your iPhone when its own power gets low. Mophie promises that its battery will offer 8 hours of talk time, 10 hours of video, and 40 hours of music. An included Micro-USB cable charges and syncs your iPhone and the Space Pack at the same time.

The Space Pack also lends a hand if you're low on storage. The case comes in two versions -- one with 16GB of capacity that costs $149.95 and another with 32GB that runs $179.95. A Space app helps you manage and access the files housed in that extra storage.

The only potential downside is that the Space Pack's storage doesn't merge with the storage on your iPhone, according to a hands-on review by Engadget. Instead, the case operates as an external device, much like a USB drive. So you have to manually choose where you want to save specific content, such as your photos and music.

The Space Pack is a case at heart, so it also serves to protect and defend your iPhone with edge-to-edge coverage. You can order the case in black or white. Preorders are now available at Mophie's Web site.

The Space Pack doesn't come cheap. But with both power and capacity, it kills the two proverbial birds with one stone.