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PoweRocks Stone3 7800mAh Power Bank for Cell Phones, iPod, iPad, iPhone, Tablets & eReaders

4.1 out of 5 stars 15 customer reviews
| 6 answered questions

Price: $38.50 & FREE Shipping. Details
In Stock.
Sold by MPower Electronic LLC and Fulfilled by Amazon. Gift-wrap available.
  • Battery type: Lithium ion; 7800mAh capacity
  • Input: 5.0±0.5V/2.1A(Max)
  • USP Port #1 output: 5.0±0.25V/2.1A (for tablet devices)
  • USB Port #2 output: 5.0±0.25V/2.0A (for cell phones and MP3 players)
  • Dimensions (mm): 75 x 75 x 27; Includes USB cable for charging the power bank
$38.50 & FREE Shipping. Details In Stock. Sold by MPower Electronic LLC and Fulfilled by Amazon. Gift-wrap available.


Product Description

PoweRocks Stone3 7800mAh Power Bank for iPad and various other USB devices is an amazing solution for re-charging your devices when charging from an outlet is not possible. The power bank can charge two devices at the same time, as it has two outputs.
PoweRocks Stone3 7800mAh Power Bank is a universal external backup battery and works for iPad, iPod, iPhone, and other USB devices including phones. Equipped with a one touch battery indication for turning the backup battery on or off for your convenience. Charging the battery is simple and can be charged within 5 hours under their max output, by a PC, a USB wall charger or your car charger.

Product Details

  • Shipping Weight: 9.6 ounces (View shipping rates and policies)
  • ASIN: B0053U3W0M
  • Item model number: ST-PR-1C
  • Average Customer Review: 4.1 out of 5 stars  See all reviews (15 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: June 1, 2011

Customer Reviews

Top Customer Reviews

I got mine from Monoprice, but it's the exact same product. I love this thing. Takes some time to charge, I usually leave overnight, bu will recharge my iPhone or iPad several times. I can usually recharge my iPhone 4 about 3 times and the iPad 2+ times. With two outputs, I can even recharge both at the same time.
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Small, efficient way to extend the battery life of almost any device that uses a USB cable for recharging. It's also nice to be able to plug in two devices at once. It's especially nice for travelling (long car trips, plane trips, etc.).
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The idea is very good and I love the design but did not like the instructions. Finally figured it out by myself. I also have not been able to charge the unit at an outlet. I have to use the computer to charge It. What if there is no computer available? Maybe someone knows how to do it. If so, I will amend my review because it is good to have on hand and seems to work well.
1 Comment 2 of 3 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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The Powerocks seems to hold a charge long enough without losing it until I need it to charge my phone. The only problems I had with it were that it does not start charging back up when i plug it into the computer usb port on the first try and the connector wire that was sent me was crooked at the mini port so it would not fit into my phone. I had to get another wire to use.
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It's great. Works on all devices we have. I get about 2 charges out of it for my iPhone. A little bulky but I like the design and the indicator light. Wish it charged itself faster and wished it charged the devices faster. But it works.
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Love it! Love it! Love it! Love it! Love it! Love it! Love it! Love it! Love it! Love it!

Requiring a word limit makes me decide not to review any further purchases!
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Item works as advertised. I can charge my phone twice without having to recharge the Powerocks. Worked great for my recent international trip. I received it in time as well. Overall a good purchase.
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Does not hold charge. Very disappointed
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