Amazing battery life and longevity!
929814
Like many people who work out at the gym, they are looking for headphones or earphones that can provide great sound while providing comfort.  This delivers partly on both accounts.  However, as an overall package, it is great for what it provides compared to its price.

COMFORT (4.5/5):
It is fairly comfortable overall.  Since I primarily use it at the gym, that is what I'm basing my score off of.  I find that the back part of the headphones get in the way every now and then.  It's not that big of a deal, but it's inconvenient when I hit it slightly and it nudges off my ear.  I would say my head is medium sized, so I wouldn't expect this issue to be present.

Sound Quality = 3.5/5
Probably going to be the biggest hit here.  The sound quality definitely is lacking.  Granted, I am an audiophile, so for people who don't mind too much on audio quality, you might not mind.  For me however I find it to be disappointing.

Battery Life = 5/5
Battery life is really amazing.  I haven't charged my headphones AT ALL!!!  NOT ONCE!!!  I bought these headphones in March, and right now it's June.  However, to give a background of how much I use it, it's about 1-2 hours a week (every Saturday and Sunday).  Nevertheless, to last about 3 months even on standby is amazing.  By the way, I still haven't charged it, and it's still going strong on.

PROS:
-Great battery life
-Convenient folding design
-Nice sleek design

CONS:
-Average sound quality (but appropriate for price)
-Reception during calls are "okay"
2614672
I switched from the original 2100mah stock GS3 battery to this not long ago. The difference is substantial. I can easily get 2-3 days of life on one charge. And those days include constant instagram, twitter, and vine usage, along with playing a few games, watching videos on youtube and netflix, and texting friends frequently. My phone is now fairly heavy and thick, but I have no problem with that since my battery life is astronomical. I would highly recommend this battery to anyone who needs a good boost out of their GS3.

Pros:
- Battery life is fantastic
- The case holds the battery on the phone perfectly
- The smooth backside of the case makes for easy entry and exit from a pocket

Cons:
- Phone ways quite a bit more than it used to
- It's also quite a bit thicker
1932845
Awesome product!!
Great battery life and great finishing!!
I have only used for 5 days, so I don't know how it will be in the long run, but so far, it is great!!
2275249
I was a little skeptical about this battery even with all the positive reviews.  I have to say that it has so far exceeded my expectations.  I have a 64 Gb iPad 3, which is a real battery hog.  I use it constantly and I almost always have to find an outlet and plug it in to get through the day.  With the IMP52D, I have no problem getting through the day.  And, I don't get tied down to an outlet to try and charge up.  What really blew me away was that, after keeping a charge on my iPad, I was also able to charge my phone back up.  Really impressive capacity!

I also like the fact that it is smaller than I originally thought from the pictures and it is pretty light.  It is easy to carry around, and can fit in my pocket with no problem.  I was a little surprised that it did not come with an AC charger, but since it works off of my iPad charger and my phone charger and my flipcam charger, I decided that is a good thing, because that is one less charger to haul around.  I just leave it to charge overnight, and it is ready to go in the morning.  Like  the manual says, it takes about 6 hours for a full charge.

All in all, I am really happy I got this battery!  It frees me from worry about how long I can stay functional with both my iPad and my smartphone.  Cheers New Trent!
4865805
This battery is impressive with the amount of power it supplies on a single charge. I was able to replenish my iPad a couple of times from 75/80% and my S3 from around 20/30% four times before I had to recharge the NT135T. It also worked to with the S3 docking station with a spare battery charging. Having been days without power before, I can't imagine not having this device around to keep my gadgets and such powered so that I can continue on with all of my games, news, and communication! It's definitely possible to survive a little more comfortably when Mother Nature is having a fit and you can't find an outlet and a climate controlled environment.
4536506
Let's cut to the chase. Shall we?

Currently I'm at 2 days and 15 hours with this battery on power saving mode at 10% left.

This battery is awesome. I am never worrying about charging my phone anymore.

Those who said 4 days of battery life... Yeah that's stretching it. Highly unlikely, unless you literally use your phone for nothing but a few texts and calls.

You can use this battery (without power save mode) and use the crap out of it and easily get 2 days of life...

Just buy it!
4776420
Fantastic! Lasts long, even tells you the battery length when in use. Great audio quality as well.
4281613
I bought 2 of these (one for my phone and one for my gf). The battery life of this item is awesome. I can go for 2 days with really heavy use. This includes 3 movies (about 6 hours total) and heavy web video use. I also use my phone to play games. This battery can last me the whole day with Spotify streaming music from 8 am to 7 pm and still have 80% by the end of the day. I really love this battery for the cost and performance.

The costumer support of this company is really good. they are prompt of responding to any issues. I would definitely buy from this company if I need another battery, then again the battery has 2 year warranty.
1497138
Have had this battery for about a month, worth the extra weight since Im a trades worker and usually have to swap out the oem battery at 10 am daily. I can use it non stop all day with music, videos streaming  at lunch, and usually internet usage and continual audio playing, with this much use I still have around 20% battery by the time I go to bed at night. I use mine way more than everyone who is getting 2 or 3 days out, but I knew that wheb buying this.

This battery is also better designed than other after market, extend batteries. I purchaded a z e r o l e m o n 7500 mah battery little over a year ago, and it was longer, so it actually blocked the back speaker and I would have to partially remove the case to hear it, which would sometimes rake the battery out. That battery also died after 6 months with a 180 day warrenty... I hope I get more than 6 months out of this one, because this battery actually swayed me from upgrading to a newer samsung that didn't have a removable battery. Never had trouble with it blocking cell or wifi connection, does limit bluetooth by about 10 ft less, but that's only if I set my phone on the table and am working around it.
3786452
Amazing little speaker and great battery life! Love it
2943177
Purchased this to replace the default battery in my wife's T-Mobile myTouch 3G and was about 2x as impressed with the battery life than I expected to be after reading some of the less glowing reviews.

The battery seems to charge inordinately fast (I don't know why) and lasts us 3 days now instead of 1 day like the originally battery did.

I would absolutely recommend this to someone having problems with the battery life in their myTouch 3G, I would also make the following suggestions *IF* you don't mind disabling some stuff to save battery:

* Disable 3G antenna support. This uses a lot of battery and if you are not a data junkie, you can save big here. If you are a data nut, then leave it on.
* Disable background syncing for Gmail/Contacts/etc. This seems to wake the phone up a lot, we got a few hours of battery life back from turning this off, and all it requires is that you hit "Refresh" when you open the particular app.
* Disable GPS. This is a bit of a nobrainer, but keep this off until you need it, it uses a lot of bat.
* Install the app "Spare Parts", it has some excellent battery-usage reporting detail screens to see what is zapping your energy.
* Turn the screen brightness down to a level you think looks acceptable.

Hope that helps!
1628349
I've been using this product for almost 2 months and the battery life is nothing short of incredible. I describe myself as a moderate user, mostly calls and texts and occasional internet usage. I have gone up to 3.5 days without charging, but once I hit 10% my phone constantly reminds me to recharge. The fit and finish looks OEM, and for an extended battery it recharges rapidly. It does make your phone thicker but I actually prefer the extra heft as it fits better in my large hand. I also purchased a Hyperion case that fits it like a glove. The NFC function works flawlessly with my spouse's Samsung S5.
My last phone (HTC Sensation) lasted me 4 years, and I replaced the batteries several times, and I can say not all aftermarket batteries are what they advertise. I will update this review as the battery ages, but as of now I highly recommend it.
3130543
I actually love that the battery is bigger than the original stock battery -- I used to sit my laptop on a cigar ashtray to keep it of the desk so the fan could cool more efficiently. Now the battery does that, and it props the laptop toward me instead of just raising, which makes it easier on my hands and wrists to type. Still fits fine in my laptop case as well.

Battery life is exceptional. I haven't lived disconnected from a power source for YEARS. I've been running dead tests(taking the battery to empty) by watching Netflix in bed at night, and I end up staying up MUCH later than I wanted to :)
I'm getting close to 4 hours of heavy video processing use out of this battery.
Very pleased with this purchase, love being disconnected from the power cable for long periods of time, and can't beat the value.
836086
Purchasing this replacement battery and battery charger has practically changed my life.  No longer am I tethered to a wall or constantly charging my phone.  I know that with Li batteries, you are supposed to let the battery drain completely before charging it, however, throughout the course of a work day I constantly found myself running though 50% of the battery before noon and would have to put it on the charger in case I needed to get some heavy use out of the phone later in the day.  Also, my phone is now a year and a half old and the battery had lost some life.  The battery that came with the charger was brand new as far as I can tell, and lasts me up to 21 hours on a regular basis with moderate use.  Longer on weekends, as I use my phone less when I am just around the house and have access to my wi-fi and Galaxy Tab.  Changing the battery is a bit of an annoyance, but nothing like being tethered to a wall with a phone cord the majority of your day or worrying about the phone dying when you need it.  It takes about 3 hours to charge the battery from completely dead to 100%.  The package comes with a plastic carrying case for the spare battery, so I suggest using that as leaving it in the charger to carry around could cause the charger to be damaged.  This battery and charger have practically given new life to my phone as I was contemplating an upgrade that I couldn't really afford due to the poor battery life I was experiencing.  I now never worry about battery life, and when one dies, I just swap it out and charge the dead battery and instantly have a phone at 100%.  I will never buy another phone in the future without also buying a spare battery and charger.
2317485
These batterys are amazing! Last Saturday shoot at a party, and after 4 hours I only spend 20% of batterys life. Im so impress !
I buy two orders of this batterys!
116223
I was very skeptical despite the positive reviews about this battery...  All I can say is WOW.  It is amazing, and I am only a week in to using it.

PROS
+ lasts at least a day for me!!!!  Already got 2 days once... old battery barely made it 4 hours
+ not completely unwieldy like some of the other extended batteries (I have read the Seidio is a bit weirdly shaped)

CONS
- Bigger than standard battery (see WATCHOUT below on what case to get)

WATCHOUTS
= Charged it all the way up for 24 hours before first unplugging it, since then i discharge it all the way down and charge it all the way up (I've read that the battery isn't fully charged even when the Evo battery indicator suggests that it is, so I keep charging beyond full green; not sure how to know when you are all the way there.  I assume charging all night every night is enough).
= Bigger than standard battery, but the follow case fits ok (not perfect):  http://www.amazon.com/gp/product/B003M2Y3UQ/ref=oss_product ... It bulges a little but still protects the phone, etc.

Great battery!!!  Woo hoo!!!
1682806
Holds up well against hours of web surfing, games and other apps. I was even able to use some Live wallpapers that drained the OEM batter in a matter of minutes before. this battery holds up well on standby time as well; something the OEM could rarely do. As a comparison, the OEM would be dead just from light use by 6PM. To be more specific, I turn the phone on around 8AM every morning and it sits on standby until 12PM when I check messages and email. Then its back on standby from 12 to 7PM when it would usually be on about 10%. With this battery, I can check messages, email and surf the web several times a day and by 7pm, I'm at 50%, so big difference! Definitely worth the money!