uNu DX Plus Extended Battery Case for iPhone 4 4S

uNu DX PLUS is designed to provide more than double the battery life to iPhone 4/4S and 2X fast charging speed for heavy iPhone users.

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uNu DX Plus Extended Battery Case for iPhone 4 4S

Designed to be more than just a battery case the DX Plus features unbridled power wrapped within a refined frame. This dynamically effective iPhone 4/4S battery case brings efficiency to a whole new level. The ergonomic yet sleek style allows the DX Plus to comfortably protect while still emanating the iPhones original design. Featuring a 2400mAh battery cell which provides 40% more power capacity, plus the ability to charge at double the speed, plus the ability to charge and sync the iPhone 4/4S through the case, ensures that the DX Plus is ideal for high-end consumers, business professionals, and travelers.

Immense Battery Life

The included 2400mAh battery cell produces an enormous 310 hours of standby time and adds an additional 140% battery life to the iPhone 4/4S! The DX Plus battery also provides, 43 hours of music playback, 8 hours of web-browsing, and 10 hours of talk time.

Certified Reliability

Like every product designed by uNu, each product is extensively tested and quality tested to ensure 100% satisfaction. The “Made for iPhone” certification awarded to the DX Plus assures that this product is made to last.

Business Grade

Phones today are not only communication devices but extensive and sophisticated tools. The DX Plus was made to facilitate high-end users, including business professionals. The extended battery, the slim design, and double charging speed are made to keep users moving.

Technologically Advanced

The DX Plus was designed to match the demands of today’s iPhone users. With the ability to sync and charge through the battery case, double the speed of re-charging, and add more than double the battery life the DX Plus battery case for iPhone 4/4s is the new standard in battery powered technology. 

Designed to Impress

Knowing that many iPhone enthusiasts enjoy the light-weight and functional design of the iPhone, we at uNu created the DX Plus to emanate the iPhones form. By adding a slim backing, ergonomic feel and applying precise details to ensure full functionality, uNu has enhanced protection and more than doubled power without sacrificing style.

Features Highlights:
- Apple Certified 30-Pin Connector
- Built-in Battery + Protective Case + Signal Problem Fix
- Fully Support Charge and Sync with Case On
- Smart Switch, Gain more control over charging to enhance Safety
- Accurate LED power indicator, flashing when battery runs low
- Perfectly design, offer a full protection only for iPhone 4
- Battery Capacity: 2400mAh
- Standby Time: > 280 Hours
- Call Time: > 7 Hours (3G) / 13 Hours (2G)
- Browsing Time: > 7 Hours (3G) / 9 Hours (WiFi)
- Music Time: > 32 Hours
- Video Time: > 10 Hours

Material Lithium Polymer
Capacity 2400mAh
Dimension 120x62x18 (mm)
Charging Time 3-4 hours
Life Cycles 500 Cycles

Item Content:
1 x Micro USB charging Cord
1 x Elegant uNu retail package
1 x Micro Fiber screen cleaning cloth
1 x Matte Black battery case for iPhone 4 4S with Silver Bezel
1 x Transparent Screen protector for iPhone 4 4S

1. Does this case work for the iPhone 4s as well as the iPhone 4?

A: Yes, this case works with both the iPhone 4s as well as the iPhone 4.


2. Can I replace the top piece of the case if it is lost or broken?

A: Yes, additional parts can be purchased on our website in the add-on section.


3. How much battery life can this case provide?

A: The DX Plus has a battery capacity of 2400mAh which approximately yields another 100% - 140% power to battery life.


4. How do I turn the case ON and OFF?

A: The DX Plus uses an ON/OFF button which is located on the back of the case next to the LED battery life indicator display. Simply PRESS and Hold the button for 3 seconds to turn the case ON or OFF.


5. What are the four LED lights on the back of the case for?

A: The four LED lights show how much battery power is left in the case. Simply, PRESS the button next to the LED display once and the LED’s will light up corresponding to how much power is left in the case. 4 lights =100% - 75%, 3 lights = about 75% - 50%, 2 lights = about 50% - 25%, and 1 light = about 25% - 0%.


6. My DX Plus battery case doesn’t charge my phone fully as advertised?

A: Due to high consumption of the battery life, especially for iPhone 4s, our cases might only be able to charge up to 90% of the battery. The age of the battery is also another factor which might cause the battery case not to be able to charge the phone fully to 100%, this is a common occurrence among heavy usage consumers. Please refer to our blog for tips on maintenance and preventive care to ensure you’re getting the most out of your case.


7. What is the best way to get the most out of my battery case?

A: Some helpful tips include: Fully charging the case by itself overnight before using the product for the first time, turning on the case only after the internal battery of the iPhone gets low and keeping the battery case out of extreme temperatures to minimize battery degradation. If you would like to learn more about how to get the most out of your battery case click here.


8. Has uNu designed their iPhone 4 battery cases, iPhone 3 battery cases or even iPhone 5 battery cases to allow charging and syncing through the case itself?

A: All uNu iPhone battery cases are designed to allowing charging and syncing through the case. Simply, plug one end of the included micro-USB cable to the phone case and the other to a computer USB port.


9. Does the DX Plus affect the iPhone’s camera, phone signal or speakers?

A: The DX Plus is designed to work with all the original features of the iPhone.


10. I need more help with my case!

A: If you do not see the answer you are looking for here. We also have a general FAQ section which might help answer your question, or you can go to our technical support page to ask a specific question.