What is the difference between the two Mophie Cases for the iPhone 5?

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  • Best Answer:

    Helium - 80% extra battery charge, slightly thinner then Air
    Air - 100% extra battery charge, slightly thicker then Helium

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  • Mostly how much of a charge you receive. The air provides up to 100% charge while the helium provides up to 80%. There are small feature differences such as cut outs on the helium compared to pass through buttons on the air as well.

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