great battery, bad case.
926784
Battery is excellent!!!!  Case not so much. Can not use most standard headphone jacks with this case (They just don't fit in the opening) also most micro usb chargers do not fit in the opening to the charging port (again just won't fit into the opening). also very hard to open some of the port covers. I cut most of mine off, because i didn't like messing with that, when trying the plug in to the most commonly used ports on my phone.  That being said... the battery lasts for so long, its great! on my note 3 I could use waze for about 1 hour and the battery would have been close to dead, originally,  now I can go for hours!
282750
Battery works great. Bought as a replacement for an HP Laptop. The little switch lever that locks the battery in isn't super firm holding, so occassionally when I'm picking up the laptop, my hand will knock that switch and the battery will fall out. If it falls out against my hand and I catch it then great. If not, then thats not good.
3293256
Wrong case cover sent two times. Battery works awesome, but the case didn't fit my phone, which is the Nexus S 4G!
355722
With all the internet push notifications, it drains the battery of my cell like crazy. However, I don't want to part with the push notifications. This external battery is awesome. I might only need it when I go out all day and night, but definitely necessary. Also, the cover is nice, because the darn Sony Experia always scratch. I even called up Sony to complain and they l just jeered at me. The third thing that I like about this battery is, I feel like if I drop the phone, the battery is going to take the heat. Unfortunately, it actually does. My current external battery is my second one. I dropped my first one. The pin that transfers battery to the phone in the left middle part of the phone broke when I dropped the phone. I guess I rather break this 30 bucks product than my 700 dollar phone.
799100
As a battery charger, this case is fantastic.  It has a large battery capacity that I think is as slim of a design as you could expect.  But it is heavy (that's really just something you have to live with if you buy a battery case - not a negative for this particular case vs. other battery cases).  The three stars and I'd maybe even say it should only have 2.5 is because it only does 1/2 of what I feel like was the "sell" of the product.  It is NOT protective.  With even the slightest drop (6 inches), the face plate will pop off and the phone can come flying out.  I am glad that I experienced this with a small drop so I had no damage to the phone.  But my hands are full a lot so drops are just something I know will happen - therefore, I'm returning it for the LifeProof battery case.  If you don't drop your phone or aren't looking for the "protection" aspect of the case, it could be a good case for you.  I use my phone for email, internet, calls and texts regularly throughout the day for work and I was able to keep it charged all day without plugging in and not even running it down to close to nothing by the end of the day.
4951493
The battery is awesome but it was shipped in a flimsy box that provided no support for the battery at all.  I hope this doesn't cause issue down the line because the battery was banged around.
631647
As a battery only this case works great. For me there is a huge downside in the fact that the cell signal is severely reduced with the Morphy case installed on my phone. Areas with 1-2 bars of service will have none when using they battery case.
683148
The back case is terrible, we all know this.

Mine was especially bad, as it did not connect at all on one side. Upon telling the sellers, they sent me a new one in a hurry, so that's amazing.

BE CAREFUL! This battery makes your phone super heavy. I dropped it from my pocket, and it broke the LCD/Touch screen. Amazingly, no cracks. Unfortunately, it cost me $300 to fix the LCD and touch screen. So just be careful with your heavier phone.
2186800
The battery is great, but the case very shoddy and cheap.  The loop to mount it on my bike tore off after having used it only once.
1832289
If you don't care about NFC and can get over the increased size (the second one isn't a criticism of the product per se, just a reality of it), this is a solid battery. The capacity is pretty incredible, and as a heavy user I literally cannot drain it in one day. Having said that, the NFC is highly unreliable (I absolutely cannot use it with my Yubico, for instance), and the build quality of the back cover is good, but far from great. Those who are already nonplussed with Samsung's plasticky build quality will shudder, but it does get the job done.
4305369
The extended battery has been great and everything I hoped for.  The issue I have had is that the back cover has a 1.5 cm vertical crack beginning from the middle of the micro-USB port.  The problem is that the battery pushes the back cover out and there are empty spaces between the phone's hardware and the case.  So, at some point it must be getting pushed in and cracked.  There hasn't been any unreasonable usage.  It seems like it would be better if they put some sort of foam or cushion so there was something to support pressure being applied to the back cover.
381846
The battery works fantastic and charges my phone fully and quickly. The case and protection are not so great. The case split in two when dropped on carpet and the bumpers seem to come off very easily. Will most likely only be using this as a battery pack and not a case. I happened to get it for 20 with a discount code, would never pay more than 20 dollars for this because of the poor protection of the case. If I paid 40 or more this would be a 1 star review.
4445012
Obviously there are great reviews about this battery all over the internet, but I had to experience it. I got it recently because of a sale/coupon which made it a great deal and the only reason I bought the white one since the black was out of stock. I'm very satisfied. To give you an idea, I was using gps for about 90 minutes, gaming for about 45 minutes, minor calling/texting, bright screen while watching videos for 30 minutes, and random web browsing. Battery was still at 77% by the end of the day. Great stuff and definitely was worth the price I got it for. I recommend this to anyone, but not the white case for obvious reasons. Also, great customer service.
1368806
Any app that's CPU/4G/GPS intensive will drain this thing pretty damn fast.  Slower than a regular battery, but still pretty fast.

I would have given this 4 stars but only about a week after having the phone I dropped it on it's back and, due to the weight of the battery itself, caused two of the tabs at the top of the cover to break off, causing it to barely stay closed.  I've had to use tape to secure it.

Otherwise, this is a great battery and if you've been looking for an extended battery, definitely get this one.  I would suggest getting a case that is compatible with an extended battery like this, because dropping it can cause the case it came with to be almost useless.
2619818
I like the case as a whole, no issues with quality, but I often see the screen glowing in the dark despite the lid being closed. Many times I tried to turn it on to find the battery completely dead, despite being fully charged when put away.
4847845
The P4 is a wonderful machine and everything that comes in the official grey foam kit is GOLD. Similarly, the backpack is travel-worthy and definitely something I'd take on a plane.

However, the value of the package is greatly dimished when you find your second battery is in a beaten-up box and perhaps unsurprisingly, selfsame battery also fails to charge--at all. Won't turn on, button does nothing, hours on the charger...nothing.

Seems most people get two solid batteries, but when you get the bad one boy does it cut your enjoyment down--and fast.

I cannot even imagine having received a dud if I needed a P4 for professional use.
2000140
bought zerolemon battery and case and wanted another case cause the first one was damaged
the pic displayed is like that of the extended battery case but the case in actuality is way diff and can't fit the extended battery