Mophie Juice Pack Air for iPhone 3G review: Mophie Juice Pack Air for iPhone 3G

Mophie Juice Pack Air for iPhone 3G (black/green)

(Part #: MF-JPA-IP3G-BLK)
3 stars

CNET Editors' Rating

1 stars 3 user reviews

The Good The Mophie Juice Pack Air for the iPhone 3G makes a great protective case and helps to double the battery life of the phone.

The Bad The Juice Pack Air has a Micro-USB port instead of a popularly used Mini-USB port. Also, for the extra bulk it adds, you'd expect it to provide more battery life to the phone than it does.

The Bottom Line If its Micro-USB port doesn't put you off, the Juice Pack Air works well both as a protective case and as a supplemental battery for the iPhone 3G.

6.3 Overall
  • Design 7.0
  • Features 5.0
  • Performance 7.0

Editors' note: We updated this review on April 21, 2009, to correct an error. The Juice Pack uses a Micro-USB cable instead of a proprietary cable.

Considering the iPhone 3G's short battery life, an extended battery should be the first accessory you buy. The $80 Juice Pack Air is the newest of this sort of accessory, and it is the thinner, lighter version of Mophie's $100 Juice Pack. The Juice Packs are cases for the iPhone 3G that also act as extra battery packs, thanks to their included lithium polymer batteries.

The Juice Pack Air looks identical to the original Juice Pack, with one addition: the top portion of the phone is now covered, giving the iPhone complete protection. The "air" in the name refers to Mophie's contention that the new case is thinner; however, with dimensions of 4.9 inches tall by 2.59 inches wide by 0.75 inch thick, the new case is not much smaller than the original. Also, it adds about 20 percent more weight to the phone, which is slightly lighter than the original Juice Pack. Aesthetically, the new Juice Pack is a better-looking case than the original version.

The "Air" in the name also indicates that you won't get as many hours of battery life from this case as you would from the slightly bulkier original.

The Juice Pack Air has a rechargeable 1200mAh battery, is made from matte plastic with a sleek surface that is prone to retain fingerprints, and it comes in three colors: black, gray, and violet. The accessory is divided into top and bottom sections that, when enclosed around the phone, form a perfectly snug hold that can quickly be taken apart if need be.

On the back, the Juice Pack Air has four blue LEDs that indicate the level of power left in the battery. In our experience, these lights weren't accurate; we were able to charge the phone even when the lights indicated it didn't need any more juice. On its bottom are a USB port and an on/off switch, which gives you the option to connect or disconnect the phone from the extended battery's power. The iPhone 3G charges its internal battery using power from the Juice Pack Air. When plugged into a computer, the phone is charged regardless of whether the Juice Pack Air is on.

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