Juice Pack Air for iPhone 4: Morphie.

You are worried about your battery expansion for your iPhone 4, you needn’t worry anymore. The old favorite of Apple Morphie is back to rescue you and your iPhone.
Morphie has designed an accessory to extend battery option. It has come up with the seventh version Juice Pack Air exclusively for the iPhone 4 and this accessory maker is the first ever to work with Apple for battery pack.
The redesigned extended-battery-slash-case offers a 1500 mAh battery (the iPhone 4’s built-in battery is 1420 mAh), which Mophie claims to add up to 6 hours of talk time on 3G, and up to 12 on EDGE, or an extra 36 hours of audio playback, or nine hours of video playback.
It gives the iPhone 4 a little bulge look in the back. It has a soft-touch black back and silver band around the sides, with cut-out areas to expose the iPhone’s various buttons and headphone jack. Mophie moved the four-LED status indicator from the back to the bottom of the pack to make it easier to see without having to pull it out of, say, bag pockets, and the pass-through charging USB port allows you to sync with iTunes while charging either the iPhone’s internal battery or the pack’s extended battery.
The Juice Pack Air for the iPhone 4 is choking about $80 USD only for you.

Thanks, Macworld.com

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Computer Science Student from University of Cincinnati turned writer with my first iPhone. I like to travel, make friends with tech minded folks on internet. I write on my 13" MacBook Pro Retina and iPad Air Cellular. Black iPhone 5S is my sidekick.