Here's just one example. Click on for a sampling of slides from the presentation.
17 April 2012 5:13 pm BSTUpdated: 19 April 2012 7:16 pm BST
Photo by: Oracle
/ Caption by: CNET News staff
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Is your phone battery always at 4 percent?
These battery packs will give your device the extra juice to power through all of those texts and phone calls.