Hyperion Samsung Galaxy S4 7500mAh Extended Battery + Free TPU Cover (Compatible With ALL Samsung Galaxy SIV Carriers) [24 Month Warranty] - (White)

There have been a few others that have touched on these so I will list pros and consPros:-Huge battery has lasted me 3 days before, good if you fall asleep without charging.-Case works, I have dropped my phone and the case has saved it like any other medium range case would.-Gives the Galaxy a little extra "bulk" to hold on to, I always thought the Galaxy was too thin for my hands.-Works with NFC.Cons:-Case is prone to staining; left it in my blue jeans pocket wile it was raining and the case is now blue, only really applies to the white case. your hands will eventually nasty it up too-Case is not very well designed, if your headphone adapter is larger than normal you're going to have to cut the case to fit it. the flash on the phone ruins pictures and is unusable due to the case. the IR blaster is completely covered by the case. I was able to solve all but the flash issues with a razor blade but my case is super ugly now.-Battery is hard to put in, kinda feels like you are going to break itConclusion:This battery does what it says it does with some bad side effects, if you absolutely need the life it is worth it. however Hyperion has come out with a similar strength smaller in dimensions battery that you should check out. I believe it solves a lot of these issues and is around the same price

I love the S4, but the stock battery would die 70% of the way through my day (I am a moderate-to-heavy user). I returned this after a couple of weeks. I ultimately ended up with the 5200mAh extended battery (link below), and am much happier with that model.PROs for the 7500 mAh Battery:- Lasts 2-3 days- Works with NFC, Wireless chargingCONs for the 7500 mAh Battery:- There is no hole in the case where the IR blaster is. You have to either drill a hole in the case, or not use your IR blaster... an incredibly stupid design flaw. You must use the case, because the battery itself is so big and the specialized case acts as both the phone back and a protective cover.- It's very heavy (about the weight of a first gen iPod, maybe heavier). I was afraid my phone would crack if dropped, due to the added battery weight.- I couldn't get my MonoPrice MicroUSB cable into the phone's charging port, because the hole in the case for the USB port wasn't large enough (it could be fixed with an exacto knife, but again, this is a stupid design flaw that shouldn't exist)- The extended battery covers the back speaker, so the sound is muffled if you're using speakerphone or watching movies- Takes a long time to charge (nothing Samsung can do about this), and the battery percentage reporting isn't very accurateThe battery I ultimately ended up with is this one: http://www.amazon.com/gp/product/B00BCK14YS/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1 and the case is purchased separately, here: http://www.amazon.com/gp/product/B00CXO0US8/ref=oh_details_o01_s00_i01?ie=UTF8&psc=1. I am much happier with this battery, as it gets me through the 16 hour days I sometimes have.

2-3 day no way. unless u dont use the phone at all wich then makes no sense gettin a battery this big. been usin this for the past 4 months and i have to say im pleased. went from havin to charge my phone twice a day to not even having to worry about that at all. but i do have to charge it every night. the only down side is that hen u take pictures with plash u get a glare on one side of the pic, so that means no takin picture at night. but if you dont care about that this battery is for u. i play alot and text all day and at the end of the day im alway around 20 % .not givin 5 stars cause it does not last as long as adertised, and the glare in the pics

Tested this and capacity is as stated. Tested both this and an S3 extended. My pictures are fine with this. The expanded battery case is designed well for minimal flash interference. Case fits well. Personally I like the feel of the bigger phone which is now not quite twice as thick. With normal use I can now go two days where I was not able to even go a day without worrying about finding a charge station. Yes, it does take longer to charge this battery. Remember the battery is about 2.5 times the size of the original but the chargers are still charging at the same rate. Most chargers for cell phones only charge at about .7 amps. A couple are 1 amp. So at 1 amp it will take 7.5 hrs to charge this battery from empty. With a .7 amp charger it will take 10 hours..So for quicker charges upgrade your charger. Hyperions batteries have not expanded on me. Some cheaper ones expanded after only a couple of charges. So save money by getting the Hyperion which I am obviously quite happy with.

This battery does not perform any better than the 5200mAh model. I have spent considerable amount of time rooting my phone and re-flashing my ROM to analyze and see if this product works as advertised. Sadly, the answer is in no. Even after following the "conditioning" [interestingly not provided in the product instructions] information and resetting my battery status with a 3rd party bash script I am still unable to attain more than 30 hours of light usage. The Hyperion 5200mAH battery gives me the exact same results. Whatever this MicroPack technology is, it does not seem to improve/extend battery life. Stick with the 5200mAH. Also of note after 1 week of usage with this battery I had 1 experience where the battery overheated and my phone gave a warning about cooling down. I have not experience the message since then, but again, the battery life is not anything to write home about.