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  • Just Wireless Power Case Portable back up Battery for iPhone 3GS, 3G - Doubles your Phone's Battery Life
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Just Wireless Power Case Portable back up Battery for iPhone 3GS, 3G - Doubles your Phone's Battery Life


Available from these sellers.
  • 8 Hour extended talk time, 300 Standby Hours
  • LED indicated battery level
  • Portable
5 new from $7.99

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Technical Details


Product Details

  • Shipping Weight: 8 ounces
  • ASIN: B004SY5NEW
  • Item model number: DPCI 080-08-0971
  • Average Customer Review: 2.8 out of 5 stars  See all reviews (4 customer reviews)
  • Amazon Best Sellers Rank: #1,105,497 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
  • Product Warranty: For warranty information about this product, please click here

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Product Description

Portable Power Case Doubles your Battery Life up to 8 Hours! Just slide your iPhone in when the battery gets low. It's sleek design looks like a protective covering, not a battery!

Customer Questions & Answers

Customer Reviews

2.8 out of 5 stars
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Most Helpful Customer Reviews

4 of 4 people found the following review helpful By Sandi Trebuchon on April 27, 2011
This case is made of cheap chinese parts that dont even work, the case will not hold a charge and I can assure anyone looking at this IT DOES NOT DOUBLE YOUR BATTERY LIFE it doesent do anything for your battery, because the product is basically a scam. In addition, just look at the seller, Just Wireless, they dont even have a WEBSITE!!! This product is designed to fall apart, and it won't help your iphone at all, definetly not worth $20, not even worth a penny. One additional note, the case more than doubles the Phone's weight, and looks extremely ugly when you take it out of the box.
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By J Olivier on November 11, 2011
Yes, it is bulky and doubles the weight of the phone. Also, when its charging via mini-USB you can't charge your phone. But I find it reliable, and it will recharge my phone quickly to about 60-70%. It had been a lifesaver several times for me. Also, though big it has finger grips on the side which help me hold the slippery 3GS easier. I highly recommend it for those who still have a 3GS. No problems with fit or finish for me.
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1 of 2 people found the following review helpful By Robert's iPhone on April 27, 2012
Think it is imperative to correct the bad perspective. The Just Wireless Power Case for Apple iPhone is a superb product, the packaging is first class, almost overdone. The product is very finely finished. The Apple iPhone 3G slips in, connects, fit is almost too tight for perfection. The initial charge is very long, maybe five hours, remember this is off the shelf, that battery has no footprint and takes time to come to life. It charges fully. The charge stays day after day, while switched OFF. The USB cable supplied is unique connecting to the power case, that way you don't mix it up with other devices, thoughtful. The Just Wireless web site is poor, product pictures don't show on my MacBook Pro. I bought two units and delighted with the form fit, very small profile, nice compact package with the iPhone encased.
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By Carlos G. on February 23, 2015
Verified Purchase
not works
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