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Mugen Power 3200mAh Extended Battery for Samsung Galaxy S II Si9100 / GT-I9100 with Battery Door [HLI-Si9100XL]
Mugen Battery will last 94% longer!

Regular Price: $89.50

Special Price: $86.50

Ships on April 17, 2015.

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  • Free Shipping Worldwide!
  • 365 Days Warranty & Free Returns
  • Quick & Secure Ordering Process

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.

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.

Shop Safely and Securely

Mugen Power is proud to offer safe and secure online shopping experience.

We understand that the safety of your personal information is important to you. Our webshop is equpped to protect your personal data and credit card information from unauthorized access.

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Please visit our customer Learning Center page for more information.

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.

Overall Rating

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Excellent Value

20 July 2014


Excellent product, so much better than the original S2 battery before chraging twice a day now charging avery two days. Only criticism is that the extended battery door is not the best fit on the phone but all in all a great product


Excelente producto

8 June 2014


Recibi la bateria en el tiempo exacto y en buenas condiciones. Cabe decir que la bateria es excelente y ya no tengo que preocuparme por llevarme el cargador o dejar de usar el celular para evitar que se baje la pila.

Sobre el rendimiento cumple con lo descrito, es decir, si solo utilizo el celular para llamadas, mensaje y escuchar musica la bateria me dura hasta tres dias. Si le doy un uso excesivo ( wifi,plan de datos, youtube, juegos, redes sociales, email, etc) la bateria me dura dia y medio.

Esteticamente se ve mas gordo mi galaxy 2 jajaja, pero prefiero sacrificar la estetica y ganar mas autonomia.

En conclusion, muy buen producto, lo recomiendo ampliamente y volveria a comprarles.


Very Good Product

20 April 2014


I am quite satisfied with this product. Great Performance. But price is too high.


Exactly what I was looking for!

8 February 2014


This battery is amazing - even with medium use it lasts up to 3 days and I never have to worry about charging on the first or second day. I was so sceptic if it would really work but it turns out this was a well placed investment. I would buy it again!


very good

25 October 2013


I hope will maintain performances over the time



1 September 2013


Buona batteria, raggiunge ottimamente 2 giorni con sincro attivata con gmail e whatsapp attivo.



16 August 2013





16 July 2013


Been using it since while. It's giving me more than what was expected. Guaranteed 24+ hours.


Хорошее дополнение к телефону

10 July 2013


Очень хорошее исполнение и качество материалов. Позволяет дольше не задумываться о возможности остаться без связи при интенсивном использовании телефона (просмотр роликов, серфинг по интернету, музыка, радио и т.д.) Если не смущает увеличение толщины аппарата в 2 раза можно смело покупать. Особенно радует дополнительная крышка с откидывающейся опорой. Спасибо!


Hard to remove but lasting

3 July 2013


Back cover is hard to remove with bare hands, but the battery is very long lasting and not that heavy. Cover grip feels safe in your hands.

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