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Mugen Power 4000mAh Battery Case for Sony Xperia Z Ultra [CC-6802]
Get 131% More Power with Mugen Battery!

  • Mugen Power 4000mAh Battery Case for Sony Xperia Z Ultra
  • Mugen Power 4000mAh Battery Case for Sony Xperia Z Ultra

Ships on April 17, 2015.

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Mugen Power Extra Strong Extended Replacement battery.

Why Mugen Power?

Mugen Power is making extended batteries since 1979 and it is the most trusted manufacturer of high performance extended batteries. With Mugen Power You will have reliable, safe and robust solution for your power needs.

Here is what Mugen Power users say about it:

84.68% of Mugen Power users Will buy Mugen Power again as next battery.

87.18% of Mugen Power Users Will recommend Mugen Power to their friends.

90.12% of Mugen Power Users think Mugen Power is Useful.

87.10% of Mugen Power Users think Mugen Power is Practical.

86.20% of Mugen Power Users think Mugen Power is Reliable.

Product Videos

Sony Xperia Z Ultra 4000mAh Mugen Power Battery Case [CC-6802]

Additional Information

SKU CC-6802
Cell Type Li-Polymer
Voltage 3.7v
Capacity (mAh) 4000
Battery Door Not Required
Original Battery Model 3050 mAh

Overall Rating

5 Item(s)

per page


6 December 2014


Great works as expected; accurate design allows to let all the.ports free yet protect and fit well the phone. Now I can have a complete charge wherever I am. Quite long time shipping, But a exellent customer Service will answer in no time and in a very decent way to every question you'll ask. Negative notes: wrong instructions in the package (but you can find the right one online, if you need them) and the pen doesn't work with screen protector.



1 June 2014


Love the speedy delivery and the good quality of the goods.

Although it makes my phone thicker but it provides me the extra juice when my phone battery is low and it is far better than those magnetic dock.


great batery

22 April 2014


Thanks mugen power, good quality...


great battery case

13 April 2014


My phone lasts 3 times longer now :)


Good battery life but bulky and low quality coating

2 March 2014


Like the product.

Build quality is good but not the coating, it easily peal off especially the corner.

Battery life is great and the stand is super useful. It will be great if the stand angle is adjustable.

The pen provided is low quality and not so responsive when try to write.

I will give 5 stars rating if it is thinner.

My sony z ultra thickness is now triple than original.

5 Item(s)

per page

Mugen Power Extra Strong Extended Replacement battery. Express Shipping Worldwide!

Mugen Power is the worldwide leading brand of high performance batteries for portable electronic devices. Mugen Power means Performance and Quality.

Mugen Power batteries have better performance (higher capacity) and reliability (longevity & safety) than other brands. The superior performance improves run time, often doubling that provided by the original brand replacement. The superior quality results in longer battery life and better protection of the powered device.

All Mugen Power batteries also undergo vigorous QA procedure, resulting in Mugen Power achieving the lowest return rate in the industry. All Mugen Power batteries are CE approved.

Mugen Power batteries are premium product and designed for experienced users, who understand importance of quality for long battery life and safety of everyday use.

See what others say about Mugen Power Batteries:

"Go buy one, well worth it!"

"The extra size and weight increases pale into insignificance when you consider the true convenience the battery gives... it represents excellent value for money."

"a much better choice"

"This is the second Mugen Power Battery that I own and I can't think of me having a Pocket PC without a Mugen Power Battery on it. This battery gives me the freedom of mind of not having to think about to recharge the battery everyday after work."

Longer Battery Life Premium QualityStandards Compliant

Worldwide delivery: We ship to any address Worldwide

Shipping Method: We ship your order using World-class Courier Services so You get your products securely and as fast as possible.

Online Tracking: Right after your order is shipped, we send an email with online tracking information.

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Mugen Power Satisfies

Returns & Exchanges:

If you are not 100% satisfied with puchased products, you can return your order to us for a full refund or replacement.

Return Merchandise Authorization (RMA) number is required on all returns. All items returned without RMA number will not be accepted and refused.

To obtain a Return Merchandise Authorization (RMA) number, please contact us for further instructions. Returns or exchanges are made within 1 year after the purchase date. If possible, items should be returned with all parts and accessories, and in original packaging, including the manual, the inserts, the RMA number and a copy of the packing slip or invoice.

We will process exchanges or refunds within 1-2 weeks of receipt.