Samsung Galaxy S II Mugen 3200mAh Battery Review

A few months ago, I had reviewed the Mugen Battery for the Samsung Galaxy S and the HTC Desire Z. I was thoroughly impressed by the batteries, and have been recommending them ever since to my friends. When the Samsung Galaxy S II was launched in India, it was all but natural for me to go and get the latest and the best Android smartphone around.

The Galaxy S II really does not have any serious drawbacks, and is SLIM, SEXY and FAST! I had no major issues with the battery life of the Galaxy S II, but I was eagerly waiting for the folks behind Mugen to release the extended batteries for the SGS2. It was just a matter of time before Mugen released two new extended batteries for the Galaxy S II, with a capacity of 1700mAh and 3200mAh respectively. I was pretty disappointed with the 1700mAh battery since it only offered a 50mAh boost in the capacity compared to the stock battery. The performance difference between the stock and the Mugen 1700mAh battery was going to be barely noticeable.


It was pretty much logical that the 3200mAh battery was going to offer stellar performance since it offered nearly double the capacity of the stock battery. The only real drawback of this extended battery is that it requires an extended backcover, and adds noticeable thickness to the phone. My main purpose of this review was to find out whether the extra bulge added by the extended battery is manageable or not. When I reviewed the Mugen extended battery for the HTC Desire Z, the extra thickness and weight added to an already thick and heavy phone, making things tough. It was quite a task to manage such a thick and heavy Desire Z.

So after using the Mugen 3200mAh battery for the Samsung Galaxy S II for nearly 3 to 4 weeks, here are my thoughts about it.


I have absolutely no doubt in my mind about the performance of the Mugen 3200mAh battery. The battery may add noticeable thickness to the phone, but its well worth a trade-off. After switching to the Mugen battery, I started playing more games, watching more videos and listening to music on my Samsung Galaxy S II, without the fear of the phone’s battery lasting me only a day. In fact, even after a day of extremely heavy usage, the phone still has enough battery left to last me at least another 12 hours of light usage.

On stock battery
On Mugen 3200mAh battery

Yes, I am using a leaked Android 2.3.4 firmware along with a custom kernel on my SGS2, which definitely has brought about a noticeable improvement in battery life. Make no mistake about the performance of the Mugen 3200mAh battery for the Galaxy S II. It will in no way disappoint you.

Thickness vs. Performance

While the Mugen 3200mAh battery does improve the battery life, it also adds noticeable thickness to the phone. Thankfully, the Samsung Galaxy S II is one of the slimmest (8.49mm) Android handsets around, and even after installing the 3200mAh, it remains fairly portable. This is, unlike other thick handsets, like the HTC Thunderbolt, where using an extended battery makes the already thick phone, a brick!



Now, the main question which most Mugen buyers ask themselves before buying their battery Is the improvement in battery life worth a trade-off for a thick phone? According to me, yes it is! The improvement in battery life thanks to the Mugen battery is tremendous, and is just too good to miss. For me, the extra bulk added by the battery is manageable, and I don’t have any issues in using the Mugen battery on a day-to-day basis. The bulk does make the beautiful SGS2 look ugly though.

Until there is some significant advancement in the world of battery technology, Mugen extended batteries are your and your phones’ best friend!

Interested readers can buy Mugen batteries for their handset from here.

Published by

Rajesh Pandey

Rajesh is a 19 year old nerd, currently pursuing B.Com Hons from Bhawanipore college in Kolkata, India. He loves everything tech, especially Android. You can follow him on twitter @ePandu or mail to him at [email protected]