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Item#: N82E16875975221

UNU Black 14000 mAh Enerpak Extreme Dual USB 2.1A Universal Battery Pack for Smartphones and Tablets UNU-EP-02-14000BS

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  • 1.0A / 2.1A
  • Immense Battery Life
  • Packed solid with power, the Extreme's 14000mAh battery can charge your favorite products over and over on a single charge!

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  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews
Enerpak Extreme Battery Pack

Enerpak Extreme Battery Pack

Enerpak Extreme Battery Pack

Recharge Your Products
Up to 7 Times

Not to sound Extreme, but this 14,000mAh battery can recharge even the most powerful devices multiple times. The Extreme is built to keep dispensing power long after most other batteries have simply dried up.

Two Charging Ports Doubles Charging Efficiency

Designed with two USB charging ports, the Extreme can charge two products at the same time! That means up to a 50% less wait time to charge your products. Plus, now you never have to worry about juggling precious USB charging ports again.

Enerpak Extreme Battery Pack

Better Batteries

The Enerpak Extreme isn't just "made"—it's engineered to be a finely tuned energy supply that helps you live a better life. In fact, we make sure every component of the Enerpak Extreme is the best it can be so you'll have long-lasting power.

Take the Extreme With You

Like all our Enerpaks, the Extreme is built to be portable. Take it with you on a trip, leave it in the car, or put it in a backpack, the Extreme is ready to go whenever you need it. Plus, with its huge power capacity, the Extreme is great for extended trips.

Enerpak Extreme Battery Pack

Easy to Use: Single
Button Interface

The Aero battery case features an ultra-thin seamless integration which allows syncing and charging without having to remove the case. Also, the Aero for iPhone 5S/5 is perfectly designed for easy access to all buttons and controls on the phone.

Enerpak Extreme Battery Pack

Tech Specifications

  • Battery Capacity: 14000mAh
  • Battery Type: Lithium-Polymer
  • Smartphone Output: 5V/1.0A
  • Tablet Output: 5V/2.1A
  • Product Dimensions: 4.9X2.9X.08 inches
  • Weight: 10.7 ounces
  • Lifetime Cycles: Up to 500 Cycles
  • Output: 5V/1A Charging
Enerpak Extreme Battery Pack

Built to Last

We use only the finest designs, materials, and people when creating our batteries to ensure 100% reliability from anything we produce. That's why we gladly offer a 1 year warranty on all of our product to ensure our products stand up to the tests our customers put them to.


Enerpak Extreme Battery Pack Enerpak Extreme Battery Pack Enerpak Extreme Battery Pack Enerpak Extreme Battery Pack

Learn more about the uNu UNU-EP-02-14000BS

Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details

Customer Reviews of the uNu UNU-EP-02-14000BS

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  • Jesse M.
  • 5/28/2014 8:40:55 AM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsGreat Product

Pros: This little guy made sure my phone was charged when I needed it. I can hook my phone up as well as a few other electronics and charge them up when I am nowhere near an outlet. For somebody who spends a few weeks out in the field for the Army, that is a wonderful piece of mind when there is downtime and I want to use electronics.

Cons: Takes a long time to charge. (Not unexpected)

Other Thoughts: This product is great. It took a beating while I was in the field and is still ticking at 100%. I use it still for large road trips and other times that I'll be away from an outlet for long periods of time.

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  • Anonymous
  • 5/19/2014 7:21:43 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsSo/So

Pros: Purchased this for a trip to Texas in my training courses. Seems to hold out charging my phone and the little light on it is sort-of handy although I forget about it constantly.

Cons: Takes FOREVER to charge. I have tried all sorts of different adapters to decrease the charge-time, but nothing seems to help. Expect to charge that sucker for an entire day at least.

Other Thoughts: Decent for the price, but I'd rather get something with larger mAH value if it's going to take that long to charge each time.

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  • Anonymous
  • 4/30/2014 8:30:42 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsExcellent solution for tablets and phones

Pros: So I've spent about 2 weeks with this device so far and I've used it exclusively to charge my iPads and iPhones. First I'll discuss the dimensions. It's slightly narrower than a 2.5 in external hard drive, but about 60% thicker. It weighs probably around 50% more than a 2.5 inch external HDD. The lengths are identical.

On one full charge I was able to charge my iPad Air with a ~9000mah battery once (from less than 10%) and an iPhone 5S's with ~1500mah batteries twice. This adds up to a little less than the stated capacity. So it's advertised as 14,000mah, but I was able to squeeze 12,000 out.

To confirm my results I charged it up 100% and recharged my iPhone 5S from ~10% remaining about 7 times over the course of a week, which adds up to 10,500mah. Taking into account heat and time, that's pretty close to the first result.

So not bad, but not exactly 100% of the stated capacity either. That said I know this isn't a perfect science. Nonetheless this bad boy has plenty of juice for any warrior. It's surprisingly lighter than I expected and not as bulky as I thought. I wouldn't carry it in my pocket, but it's easily stored in a laptop bag, briefcase, purse etc. it's also very high quality. Not flimsy or cheap at all. Solid, quality craftsmanship.

Cons: I can't seem to get 14,000mah out of it, but I'm coming pretty close.

Also it's dreadfully slow charging a tablet. I tested it twice and it took nearly 8 hours to charge a tablet. Though it can theoretically charge a full size tablet, it's better suited for phones or small tablets. And yes, I was using the 2.1amp outlet.

Other Thoughts: I purchased this because I'm taking a 2 week trip to Micronesia and my access to power will be intermittent. I'm looking forward to using it on my 30hr flight and the days in between!

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  • Kyle C.
  • 2/7/2014 7:04:20 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

1 out of 5 eggsDefective

Pros: -Amazing potential

Cons: This is my second request for a replacement to UnU:

"I purchased the UNU Black 14000 mAh Enerpak Vault Dual USB 2.1A Universal Battery Pack for Smartphones and Tablets UNU-EP-02-14000BS on 7/30/2013 from This device failed after only two charges and would no longer hold a charge. I requested a warranty replacement of this product on 12/5/13 and was shipped a second device. I have finally had occasion to use the second device shipped to me and have found it has the same defect. After only two uses the battery will hold no charge at all. Only the single blue LED on the top of the device will blink when the device is plugged in, and the remaining two LEDs will never illuminate reflecting a charge in the device. It will work at most for 20 minutes of charging."

Hopefully the next one they ship me will actually work... Time will tell. But I wouldn't recommend this to anyone.

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  • Michael K.
  • 1/13/2014 1:07:30 PM
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsUNU 1400mAh Battery Pack

Pros: Simple
Sleek looking
Bright power-remaining lights
Flashlight capability.
A 2.1 amp port for fast charging of tablets.
Dual ports, so two devices can be charged at the same time.
Fairly light weight (12 ounces?).
Comes with a USB cable.
1400mAh, which is enough for 6 cell charges or two fully dead tablet charges.
Relatively fast recharge of the battery. It took under 3 hours.
Flashlight is only triggered when button is depressed for about 4 seconds. That minimizes accidental turn-Ons while it's bouncing around in my pack.

Cons: Flashlight isn't bright (but it's not intended to be... it just aids in connecting wires in the dark, so it's not really a negative.
It's not water resistant (but what battery extender is??).

Other Thoughts: I purchased this battery extended for a trip to remote areas of Central America. I'm a freelance project manager and needed the power for my tablet (just incase). No one seemed to mention its size and weight. So, here it is: 5"x3"x1" and I'd guess it's about 11 ounces. I'm putting it in my backpack and didn't find it's weight objectionable. It has a solid feel to it (not frail and nothing juts-out).

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  • Evelyn P.
  • 1/5/2014 10:33:33 AM
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsFirst one came Non working

Pros: Good in design nice and simple lots of charge with the 14000mah i like it!

Cons: first one came not working flashlight would work but the blue lights would not come on charged for 24 hours RMA'd it to newegg got a replacement....its is quite heavy but for the amount of power it contains its a moot point

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  • Pat G.
  • 12/12/2013 12:06:12 PM
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsPowerful little thing

Pros: With a lot of modern devices, this is almost necessary to make it through a day, or at least to mean one never must choose between having enough battery to map one's way home and listening to some music. It's small, it has a lot of power and holds it for a long time, and has a useful flashlight function built-in. I charge mine about once a week with moderate use.

Cons: It's too easy to accidentally turn the flashlight on by bumping it, which drains the battery and sometimes is embarassing. It's not always clear how much charge it has.

Other Thoughts: I've recommended this to many friends and they've all been happy with it too.

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  • Jia L.
  • 10/12/2013 7:53:58 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsNever worry about not enough juice for my phone

Pros: I was impressed that this portable backup battery carries a 14000 mah battery capacity within a reasonable price, it is extremely powerful source to keep my usb recharged device and smartphone operating on those long work days and while I am traveling to New York. It charges my iphone really fast, and giving my iphone almost X 8 times juice, nowadays I am no longer need to worry about my phone battery because I got this little sucker to backup my phone battery.
Here is a brief merits of this product:
1. Large capacity
2. Duo USB charging ports (allowing me to charge 2 devices at the same time)
3. Durable
4. Fast Charging
5. LED flashlight
6. Portable
7. Great for trips, camping, and gift

Cons: None that I have found as of now, except it is kind heavy but bearable. I am probably doing another update of the device performance to share about this product. So far, I would recommend this product to anyone.

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  • nelson e.
  • 10/12/2013 4:42:14 PM
  • Ownership: 1 week to 1 month

5 out of 5 eggsHuge reserve with a flashlight to boot

Pros: - large capacity
- LED flashlight

Cons: - only comes with a micro USB cable and doesn't include different tips to power your various devices
- premium price (prices vary, but at the time of this review this sells for just 89 bucks)

Other Thoughts: This is one simple lithium-ion power bank with a whooping capacity of 14,000 mAh. It includes a micro USB cable for charging the device, just use any your existing USB AC power adapter, preferably rated at least 2.1 amp for faster charging. It came with about 75% full capacity, so you can use it out of the box. The case is made of shiny black shell with both sides protected with a plastic film. Make sure to remove the films for better heat dissipation.

The LED flashlight can be turned on by pressing the power button twice, and turn off by doing the same. It is not very bright but enough to see your way in a dark hall or fumbling for lost keys in your drawers.

These kind of back-up battery solution saved me multiple times on the road when my iPhone5 runs out of juice pretty fast. My wife carry a smaller 8,000 mAh or less in her purse. For iPads and tablets, the bigger the better and the Unu Enerpak is one such powerhouse. You can in fact charge two devices at one time using the two slots. They are labeled conveniently as "Tablet" and "Smartphone", 2.1A and 1A respectedly. To determine how much juice is left in your power bank, press the power button once. Depending many blue LEDs are lit shows you if you need a recharge.

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  • Jia L.
  • 10/11/2013 10:53:42 PM
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsAmazing Backup Power Supply

Pros: I was impressed that this sleek design backup battery carried 14000 mah capacity to keep my usb recharged devices operating on those long work days (it did last few day if i used to charge my iphone). So far I used this battery for two weeks, and i couldn't be happier with it.

Here is the merits of this battery pack after I used for two weeks:
*Fast Charging
*Large Capacity
* Duo USB charging ports
* Portable for (trips, camping, and shopping)
* Has a bright LED light
* Kind of heavy but is bearable
* Able to charge two devices at the same time without worrying about not enough juice.
* Reasonable price

Cons: None that I have found as of now...... I will be doing an update after 1 or 2 month to share the device performance. Now, I would recommend this product to try it.

Other Thoughts: Tonight i am having a crazy idea, where i want to study how the lithium battery arrange inside, and the chip connects with the usb outlet. Thinking of how can I adjust the output, so i would charge the phone faster. After few more minutes, i stop because I am not going to risk of my money. hahaha

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Item#: N82E16875975221
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