Mugen 4000 Mah Battery

[Deron Baker]

The bottom one is the back that comes with the OEM 2750 mAh extended battery. The top one is the back for the Mugen Power 4000 mAh extended battery. The Mugen back is only slightly thicker.

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[Deron Baker]

Inside of the back covers. OEM on the left. Mugen on the right. Notice the reduced hole for the camera on the Mugen.

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[Deron Baker]

OEM on left. Mugen on right. Mugen back has a kickstand. Mugen does nit have the tapered corners. Mugen has the "micro-dimples" all around the back to enhance grip.

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[Deron Baker]

It fits in the hand almost exactly the same as the phone with an OEM extended battery and back.

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[Deron Baker]

The OEM extended and Mugen 4000 mAh batteries have the same footprint, but the Mugen is a hair thicker.

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[Deron Baker]

Kickstand

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[Deron Baker]

The TPU case for the OEM extended battery that sells on htpedia.com does fit, although it contorts a bit in certain areas because the Mugen back is not tapered in the back corners.

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[humpagardengnome]

The TPU case for the OEM extended battery that sells on htpedia.com does fit, although it contorts a bit in certain areas because the Mugen back is not tapered in the back corners.

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Why did you have to post all these cotton picking puctures. Had it been one, I would've said cool and been on my way. Now I want one, damn you, Deron. Why did I have to see the kickstand, argh. Thanks for the followup.

 

[Deron Baker]

Well, don't order one just yet. I have to prime the battery per Mugen's directions, which takes 4 cycles. Then I have to test it out to see if it really gets more life than the OEM extended battery. I did not have good results from the Mugen slim extended 1900 mAh battery, so I am skeptical.

Besides, this one costs $100 and takes over a month to get it. So, let me run mine through the ringer first.

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[experiment 626]

The OEM extended and Mugen 4000 mAh batteries have the same footprint, but the Mugen is a hair thicker.

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Thanks for all the great pics! Would the Mugen extended battery fit using HTC's OEM extended battery door?

 

[Deron Baker]

Thanks for all the great pics! Would the Mugen extended battery fit using HTC's OEM extended battery door?

I tried and it will not. The Mugen battery is slightly thicker and thus I was not able to fully secure the OEM back with it. We are talking the difference of only a few millimeters.

Top picture is the OEM battery. Bottom picture is the Mugen Power battery.

Also notice how the edge of the Mugen battery is slightly "stair-stepped" at the end when viewed on the cross section view. This also prevents the OEM back from properly fitting.

Now, the Mugen Power 4000 mAh battery has a 45% larger capacity than the OEM extended battery, according to the numbers. But as you can see, although the Mugen battery is slightly thicker, it is not 45% thicker. I might say that the Mugen battery has only 5 to 10% more mass than the OEM extended battery. Yet another reason I am skeptical. We shall see.

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[Deron Baker]

LTE is working just fine with the Mugen battery and back. I'll let you guys know if I detect any changes in connection or voice quality.

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[anon(94115)]

thanks for all the pics and I cannot wait to hear you review once you have it up and running for awhile

 

[kulkaholic]

Yes thank you for your excellent review. Can you push through ics next? Than you can walk on water.

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[Deron Baker]

I did a full 12 hours charge the first night as recommended. I've actually had the chance to use it a lot today. Since my GF had an unexpected dead battery at work, I had to use my phone a lot more than expected. Made several calls, about 25 texts, lots of Web surfing, watched 2 full episodes of South Park on Hulu via Wifi, composed a review on Quickoffice, published the review on two apps, and used GPS navigation for about 30 minutes. I am around 48% battery, according to battery circle widget. I've been off charger for about 12 hours and have kept 4G and syncing on the entire time (except when connected to wifi).

So far I get 4G reception in all areas I had with the OEM extended battery back. GPS and wifi work just fine. Phone calls sound as clear as before. And as an added bonus, the back is very secure and does not creak like it does with the OEM extended back. I also prefer the shape of the Mugen back over the OEM extended back. It not only looks nicer but fits in the hands even better than the OEM extended back (which in itself fits better in my hand than the standard OEM back).

Another difference is that the Mugen battery only got up to 40 degrees C while running navigation. The OEM extended battery gets up to 45 degrees C at times when running navigation. I'll test it some more just to check.

A negative about the Mugen back is that it covers over some of the rear speaker. As a result, the speaker volume is lower. I had the volume up all the way and the Google Maps navigation lady was a little hard to hear among the car sounds on a freeway. The ringer is also subdued a bit so I may have to turn my volume up.

The only thing I am worried about is the phone shutting down when the battery percentage gets to 15% like it did with the Mugen "slim extended " 1900 mAh battery. But I need to do 4 overcharges and almost-full drains before I can assess the actual battery life.

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[Deron Baker]

Well, the reported battery percentage is now at 5%. I received the proper low battery message at 10% instead of the phone shutting off like it did with the Mugen Power 1900 mAh battery. Time to reconnect to the charger for another 8 hours.

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[experiment 626]

Another "Thanks" for the Mugen update,Deron. The battery performance sounds great.But I use my speakerphone alot so I don't know if I want to risk downgrading that. :-\

 

[Deron Baker]

Another "Thanks" for the Mugen update,Deron. The battery performance sounds great.But I use my speakerphone alot so I don't know if I want to risk downgrading that. :-\

You're welcome. Yes, that is a rather unfortunate "side effect " of the new battery back cover. Reduces the usefulness of navigation. (That reminds me. I need to see if the phone will fit into the car dock accessory with the Mugen back on.) At least with the ringer I can choose a ring tone that is inherently louder, to compensate. You can't do that for music, navigation, or talking to someone on speaker phone.

After I prime it, I will want to run a few controlled experiments of the Mugen vs. OEM extended battery to test if there is a significant advantage. Subjective interpretation might not detect a real difference since the OEM extended battery already has good battery life already. $100 and a 4 to 6 week waiting period are a lot to sacrifice if the difference between the two batteries is negligible.

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[experiment 626]

It really is a tough call. I use my phone a lot and the OEM extended battery gets me about 8 hours or so usage. If the Mugen can boost that to ,say, 13 hrs it might be worth it. I'd love to equal the MAXX's battery life running stock.

 

[Deron Baker]

It really is a tough call. I use my phone a lot and the OEM extended battery gets me about 8 hours or so usage. If the Mugen can boost that to ,say, 13 hrs it might be worth it. I'd love to equal the MAXX's battery life running stock.

Whoa. You REALLY do use your phone.



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