uNu 5,000mAh or 8,000mAh Portable Battery for Smartphones from $19.99–$27.99. Multiple Styles Available.

Portable Battery for Smartphones

Up to 67% Off
Discount 67%
Over 1,000 bought
$59.95
no longer available

Product Details


uNu Portable Batteries

Both the Tube and Tube Plus battery packs let users charge depleted smartphones, MP3 players, and tablets while away from wall outlets or other charging sources. The Tube Plus includes multiple USB ports for charging more than one device at a time.

uNu Tube Universal Battery Pack

  • Product numbers:
    • Black: UNU-EP-01-5000BS
    • White: UNU-EP-01-5000WS
    • Blue: UNU-EP-02-5000BW
    • Magenta: UNU-EP-02-5000MW
  • Portable design
  • Vibrant colors
  • Quality components
  • Lasts through up to 500 charge cycles
  • Universal device compatibility
  • Battery type: lithium-polymer
  • Battery capacity: 5000mAh
  • Micro-USB input: 5V/1.0A
  • Smartphone output: 5V/1.0A
  • Weight: 4.3oz.
  • Dimensions: 4" (L) x 1.75" (W) x 0.8" (H)
  • 1-year warranty from UNU
  • Condition: new

In the box: Universal battery pack, USB cable, and quick-start guide.

uNu Tube Plus Universal Battery Pack

  • Product number: UNU-EP-02-8000BS
  • Portable battery
  • Quality components
  • Recharges mobile devices
  • Two USB charging ports
  • Charges up to two devices simultaneously
  • Easy-to-use
  • Single-button interface
  • Turn on/off, toggle integrated flashlight, check current power levels
  • LED power indicator
  • Lasts through up to 500 charge cycles
  • Battery type: lithium-polymer
  • Capacity: 8000mAh
  • Micro-USB input: 5V/2.1A
  • Smartphone output: 5V/1.0A
  • Tablet output: 5V/2.1A
  • Weight: 6.8oz.
  • Dimensions: 4" (L) x 2.5" (W) x .08" (H)
  • 1-year warranty from UNU
  • Condition: new

In the box: Universal battery pack, USB cable, and quick-start guide.


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The Fine Print


Limit 3 per person, may buy 2 more as gifts. Free returns. Does not ship to AK/HI/Canada/Puerto Rico. Most orders are delivered within 7 business days from the purchase date. Does not ship to PO boxes. See return policy. Must pay applicable tax and provide name and shipping address at checkout, which will be shared to facilitate shipping. 1 year warranty from UNU. Goods sold by Groupon Goods. How is the strike-through price determined?

Customer Reviews

Product Picture for Customer Review

uNu 5,000mAh or 8,000mAh Portable Battery for Smartphones from $19.99–$27.99. Multiple Styles Available.

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Yolanda Verified Purchaser
Apr 27th, 2016
This is a defective product. It will not charge and I have no way of contacting the company. I've bought some before and they are great just got a bad idea.
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Leslie Verified Purchaser
Apr 23rd, 2015
I love this Portable battery (it charges my iPhone 5S so fast) I gave the extra battery to a friend, she loves it! I highly recommended this battery - it changes 3 iPhones
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Jean Verified Purchaser
Dec 22nd, 2014
I purchased the 10,000 mah. Battery pack works well, has a lot of power. It is a bit heavy but I can deal with it. Didn't realize there was no on or off button but can deal with it too.
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Jim Verified Purchaser
Dec 21st, 2014
Takes a long time to charge it ...but really nice to have it when your iphone battery runs down.
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Chandra Verified Purchaser
Nov 25th, 2014
Lifesaver during a trip to Europe when I only used iPhone 5 to take pictures. Looks good when using too. Just make sure to use your iPhone USB charger, not the cable that comes with it.
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Donna Verified Purchaser
Nov 25th, 2014
it will not work on iphone 5, in process of returning product
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Elizabeth Verified Purchaser
Nov 24th, 2014
I love not running out of battery most of the day and having to find a wall outlet to charge my cell. I get a lot of compliments on gow \"cool\" it is!
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Stanley Verified Purchaser
Nov 17th, 2014
Best for smart phones, not so much for tablet devices.
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Angela Verified Purchaser
Nov 5th, 2014
I like having this product with me as I am traveling quite a bit lately. My phone runs out of battery too often so I plug it into the uNu and am able to charge it back up in about 15 mins. I highly recommend this backup battery.
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Beth Verified Purchaser
Nov 4th, 2014
Comes in very handy for cameras and other electronics and doesn't take up much space to carry along. Great when you are not close to an outlet to recharge your devices. We boat a lot and found this to be useful when on long trips.
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