As you know we just got back from CES and almost everyone on staff has an iPhone. This gave us the perfect oppurtunity to test out the Maca Color iPhone 4 charging cases. These iPhone 4 cases not only provide protection for our iPhone’s, but also have a built in battery to keep our phones charged. We are going to take a look at 2 different cases the Maca Color 2200 and the Maca Color Air. The 2200 has a capacity of 2200mAh and the Air has a capacity of 1200mAh. Read on to see how these charging cases compare to other charging cases we have reviewed.