[Galaxy Note 4 Accessories] 901-Memphis:
Hey everyone, this is my review of the Mugen Power 6640 mah extended battery that fits the Samsung Galaxy Note 4

Here is the packaging contents, the battery itself, with the charging instructions and of course the required back cover for the larger battery

The battery came nicely wrapped and sealed in plastic to keep in clean/dry

The battery arrived with 3.86v, enough to make it all day through an 8 hour shift at work before i came home and killed it all the way and gave it it's first full charge

Here are the included charging instructions, which recommend a 5 hour charge even if the battery shows full before hand. Always try to use an OEM charger or quality aftermarket if possible, this is a lot of battery to fill without a 2.1 amp or higher charger, the included OEM Adaptive fast charger is great with this thing.

Here is the included card back in the package that has some information on it.

Here is a shot of the battery and back cover next to a AA battery for size reference.

Here is a shot of the contacts, just as nice as oem or even better, the battery itself is wrapped nicely too.

Here is the weight of the Mugen battery by itself

Compare that to the OEM battery and you can easily see that double the capacity is over double the weight!

Here is the Mugen Battery + Mugen back cover by itself

Now compare that to the OEM Samsung battery and the cover alone, the oem back cover only weighs 11 grams

Here is how much my stock Note 4 weighs with the OEM battery/cover and of course it has a Zagg glass on it too.

Here is the weight with the mugen battery/mugen back cover, one hefty beast!

Add my Hyperion case to the Mugen setup, which adds another 26 grams and you are at a whopping 10 ounces total!

Okay Now to the pictures of the full setup!

The Mugen battery door comes with its own built in kickstand, which works very nice for horizontal screen viewing. Note; it will not vertical stand due to the balance of the setup

The Mugen back cover fits very nice and snug all the way around the phone just like the OEM door

side shot of the fitment, great!

Of course it also comes with an included wireless charging mat if you already have a dock

Here we can see the extra thickness of the battery against the phone

Another shot of the battery in the phone

Here is the case i am currently using with the mugen battery, its a Hyperion honeycomb TPU, as far as i know it's the only case that will fit that you can buy by itself for about $5-10 on amazon

Since this isn't "made" for this battery, some of the cutouts are better than others.

The bottom cutouts don't line up well, one of the bottom mics appear to be completely covered, the other is all the way at the top of the cutout, the battery charging port is a tight fit with some cables, but i just had to stretch it before i put it on there. No one had any issues hearing me on the phone even though the mic port is off. The S pen cutout is fine.

The volume rocker cutout is a little to one side, but works fine, no issues there

The headphone jack is a tight fit for some , the IR blaster is all the way to one side but not worked,it works fine when i tried it, the same with the top mic port, it's all the way to one side, but not covered.

IF you look all the way to the left of this pic, you can see where the case already paid for itself with a fall from my pocket onto a smooth concrete floor. I highly recommend this case, since you want "SOME" protection with your phone.

Okay enough with these pictures, but what about the performance!?

Well the Mugen battery is rated at 6640 mah vs the stock 3320 mah, so it's rated at double the capacity...But does it perform as advertised? YES, in my usage, it gave me double the time i had on my stock battery. It lasts so long i haven't even got to fully kill the thing on it's own yet, but with the help of stability test app i was!

The battery behaves very similar to the stock battery, except for one weird quirk, when the Mugen battery hits 1%, it will last for another 3 hours of full brightness on the stability test app using full CPU+GPU Usage. Basically the stock battery meter doesn't know how to handle the difference in capacity, so the percentage is going to drop faster than the actual capacity should be, this is an issue with the phone itself not the battery.

Here are the screenshots all from 1 day of testing it. Basically i ran it without power saver and max brightness all day when i was at work, then i got home and ran stability test on max brightness to see how far it would go.

You can see i got over 7 hours of screen on max brightness time with the extended battery, these results would be even better if you had a better signal through the day. You can see during the day my signal at work is poor draining the battery even faster. If i use power saver with restrict background data on automatic screen brightness, i can do 3 days without charging.

Basically you get double the run time of the stock battery, which is very nice, since with moderate use an entire day can sometimes be difficult without charging a little bit. Now i can just leave it on without power saver, on a high screen brightness, and use it as much as i want, never actually get it very low throughout the day and charge it once per day and forget about it! I typically have "50%" on the battery meter by the end of a 12 hour day if that means anything to anyone.

The phone will shut off only when the battery reachs <3.40v, which like i said before was 3 full hours of stability test after the phone reached 1%.

Overall i highly recommend this product, it's just what anyone needs to use their Note 4 to it's fullest potential, and never have to worry about the battery dying in a single day.

You can purchase the product here if you like it.

http://www.mugenpoweronline.com/zas...eNo&sortby=sortid&orderby=desc&keyword=N910xl

Here is the website if you have another phone, they make batteries for everything!

http://www.mugenpoweronline.com/zaspx/default.aspx

Also here is the case you will need to go with it to keep it protected

http://www.amazon.com/Extended-Hyperion-HoneyComb-Warranty-Packaging/dp/B00RU90W0C