yashsingh1/xdaforums huggingface dataset:
[Samsung Epic 4G Touch] RayTrue04:
This was a good read. After many weeks of my sister complaining about her phone over heating after ICS update whenever it's in her pockets this kind of makes sense. The other night I fell asleep with my phone in bed and I happened to roll on top of it. When I awoke my phone was really hot till I sat it on my night stand for a few. Didn't even have to power it off. So maybe some of our phones are overheating and killing batteries while in tight spots with no air circulation. This is strange to me since I have never experienced it on GB. My sister has a Evo3D running ICS so maybe it's an ICS issue? Either way from now on I'm keeping my phone out in the open.
[Samsung Epic 4G Touch] BluesRulez:
Also the cases would cause this. My case used to seal all edges.
[Samsung Epic 4G Touch] patrao_n:
I would also think having a multi layer case such as ballistic would be bad too. As you said you have a holster. Does your phone have a case and then clips in? I would think the layers on the back would also help build heat.

sent from my BAD A$$ Epic touch
[Samsung Epic 4G Touch] MiguelHogue:
I was reading a something at battery university, and to the extent they said to put your battery in the fridge every once in a while to help preserve the battery.. Not like freeze it or anything extreme like that.. Just for maybe a few minutes or so.. Away from wet items as well

-TeaM VeNuM Like A Boss
[Samsung Epic 4G Touch] blackcanopy:
Yes, unlike a pouch, my holster wraps around the back of the phone and clips to the phone (always attached and easily detached) and it clips into the quick release holder on my belt, face toward body.

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[Samsung Epic 4G Touch] bleyten:
FWIW, the Spirit store told me the biggest contributor to overheating batteries causing them to go bad is the car charger.
[Samsung Epic 4G Touch] djjosh:
I almost stopped reading after that. Thinking it was a dirty joke:)
[Samsung Epic 4G Touch] KRAZYADROIDMASTER:
Why would that do it???
[Samsung Epic 4G Touch] MoHoGalore:
Inconsistent or under/over charging from cheaper travel chargers have been issues for phones since they were made.

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[Samsung Epic 4G Touch] blackcanopy:
I just thought that approach would spark interest in reading thru..:D

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[Samsung Epic 4G Touch] blackcanopy:
More good advice.. thank you

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[Samsung Epic 4G Touch] hrffd:
I think this bulge is kind of just a placebo affect. Complaints never came until JB was released with big battery drains.
[Samsung Epic 4G Touch] blackcanopy:
Again, only from my experience.. my son mentioned in OP has never ran JB on his phone, but I do as a daily driver. He has only recently switched to ICS from GB. So I'm not so sure that the JB based ROMs are to blame for the physical battery bulging so much that one can barely keep the back on the phone.

JB battery drain= yes

JB battery bulge= not so much

As far as placebo.. That's one awesome thread in general... check it out.. you'll love it's effect :thumbup::thumbup::thumbup::D

http://xdaforums.com/showthread.php?t=1748208

"PROJECT:PLACEBO" - For E4GT Optimization

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[Samsung Epic 4G Touch] MoHoGalore:
Not that i completely disagree, but look at the life span of the phone and the timing of usable jb builds.

Coincidental timing for the life of the existing battery usage maybe?

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[Samsung Epic 4G Touch] blackcanopy:
Just what I was thinking, but couldn't have said it better myself. Totally agree with that statement.

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[Samsung Epic 4G Touch] MoHoGalore:
It would be hard to point the finger at any build in my opinion.

How would you quantify a battery life cycle with not knowing build date, x's charged/discharged, etc.

New phone users, used phone users, 1 time owners have posted this very issue.

But i digress; I'm of the opinion that mass produced, non ISO certified manufactures are just as much to blame as a 5 dollar charger you can get at 7/11. But seeing as how i work for the only remaining source lead smelter in the US, i get a first hand knowledge of manufactures issues. (Speaking generally, not about nicad or lithium directly. An overall assessment. Manufacture process.)

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[Samsung Epic 4G Touch] tuscani1821:
I came across this article. Has some useful info

http://batteryuniversity.com/learn/article/safety_circuits_for_modern_batteries

Sent from my Genesis that does what Nintendon't
[Samsung Epic 4G Touch] darklavalizard:
It's funny you made this thread and just earlier this week (Tuesday I think) I noticed my battery life was completely terrible. It basically went from being OK to terrible overnight. I took the cover off the back of my phone to check the battery, and sure enough it was bulging. I ended up ordering a new OEM one from eBay for about $12. The bad battery symptoms are insane, goes from 60% battery down to single digits upon reboot. Also goes crazy when it comes to reception, 3G to no signal to roaming back to 3G like it's on a 5 second rotation. Very annoying indeed.

I just recently started using a car charger a couple weeks ago, maybe that has something to do with it? I bought what I thought people here said was a high quality one though, this one here
[Samsung Epic 4G Touch] MoHoGalore:
Unfortunately, without hands on and a multimeter, no one can tell you if what you have is good or bad. Yes, there are thresholds a phone expects to receive by the manufacture. Each charger its going to be different but within specifications. Capacitors, resistors, solder feed, all mater in current draw. For all i can say, you may in deed have the best charger.

Batteries across the board- if you're noticing temperature increasing while charging, that could be an indication. Ever fast charged a battery or trickle charged one and noticed a difference?

Pocket carry, water proof cases, etc are all viable theories as well.

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[Samsung Epic 4G Touch] blackcanopy:
Great find. Many things mentioned in that article supports MoHoGalore's earlier posts. Cheap chargers with no safety switch included during production, along with the overall production manufacturing in general.

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[Samsung Epic 4G Touch] patrao_n:
My brother has the battery bulge. He has been on the blu kuban rom on the gingerbread version the entire time he had it. So I don't think its dependent on build. He has no knowledge on how to change rims. So I know he is still on it.

sent from my BAD A$$ Epic touch
[Samsung Epic 4G Touch] blackcanopy:
Could it be any of the scenario's previously posted? Pocket storage, aftermarket charger, excessive car charger, overclocking, tethering, screen brightness 100% most of the time etc...?

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[Samsung Epic 4G Touch] Beremat:
My battery started bulging last week, and pretty much refused to hold a charge for more than a few hours. Looks like all of them are starting to die right about now.
[Samsung Epic 4G Touch] blackcanopy:
Very good point. It's not unlike me to keep a phone and it's OEM battery for a few years without replacement. Then again, I've never had a dual core phone before E4GT either. It could very well be just manufacturer flaws in this particular battery series. I have seen in the past, family and friends that store their phones in their pockets tend to replace their batteries way before I would need to.

Again, not to say that storing the phone in your pocket is the only cause, but certainly a thing to consider.

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[Samsung Epic 4G Touch] patrao_n:
I checked his phone. I went over there to give him a new battery. He does put it in his pocket. No car charging at all. Only used his original wall charger from sprint. Checked his gsam app. Screen is on dim the whole time. Doesn't even know how to tether or overclock. Just to make sure I didn't leave it overclocked by accident before, I checked cpu. 1.2 max. The only other reason I can come up with is excessive charging. He charges when he gets home even if his battery is at 80% because he doesn't know when he'll be by another wall. He goes out alot.

sent from my BAD A$$ Epic touch
[Samsung Epic 4G Touch] syed239:
Yeah I think overheating does have a lot to do with the battery bulges. I recently had one after running ICS since the first leak came out. I live in southern Florida and I too carry my phone in my pocket and it reaches 90°+ in the summer so that probably had something to do with it. But I also had the battery for about ten months so time and overusage probably had something to do with it too. But have my OEM new battery and getting 21 hours with four hours of screen time. Don't have to worry about a new battery until next summer:D
[Samsung Epic 4G Touch] RainMotorsports:
I keep my phone in its rubber gel case in my pocket 16 hours a day except when I am using it. Heat can definitely be a problem. My phone deep sleeps pretty quickly after I put it in my pocket. But I can imagine those running a few social apps might have a much different story. I keep my brightness to 100% though and I run the original Samsung battery and a sprint branded replacement for those long days. Not an issue out of them so far and I have never had a good cell buldge. I do have a cell somewhere around here that arrived already exploded lol its for an original PSP it was that old.

Don't forget hard impacts can destabilize a lithium ion cell.
[Samsung Epic 4G Touch] blackcanopy:
Another one to add to the list. I didn't realize hard impacts damaged the battery, but that make since. Thank you

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[Samsung Epic 4G Touch] squshy 7:
I personally have seen a great number of swollen batteries come in to our store lately, it's really ramped up the last couple months. What bothers me is we didn't start seeing such a large influx until the ICS update.

And yes, they all fail miserably on our cadex battery tester.
[Samsung Epic 4G Touch] Ravaged Pheonix:
It could also be due to the age of the phones. Lithium ion batteries do have a shelf life. Most of these batteries were produced right around the same time. I know with my last phone I had to replace the battery 4 times in 2 years. The first year it was on cupcake and eclair. The second year was CM7 gingerbread.

Basically my point is no matter what the manufacturers say, these batteries aren't designed to last for the whole 2 year contract for people who use their phone a lot. People like my mother who only check their email a few times a day and never push their phone with hardware intensive programs can easily make it. That's why her laptop battery had lasted 6 years and I replace mine every year.
[Samsung Epic 4G Touch] tuscani1821:
I've heard somewhere swelling can be cause by partially charging the phone often.

The cells fail prematurely because the ways batteries charge and discharge. Over time some cells start wearing out and "plate" which builds up and causes the swelling.

Batteries charge from the outside then towards the center, which would explain why they swell and don't last long because the cells on the outside plate and prevent the center cells from getting any juice.

Sent from my Genesis that does what Nintendon't
[Samsung Epic 4G Touch] blackcanopy:
I'm certainly guilty of partially charging often when I'm not trying to test battery life on a ROM. What you are saying certainly makes sense, but I've never experienced any of my batteries bulging (just been lucky I guess..:D). Not at all discrediting this claim, and I definitely appreciate you contributing this information in here.

It's all about helping others determine if they may be unknowingly doing something harmful to their battery, and the more info we have, the better the experience.

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[Samsung Epic 4G Touch] RainMotorsports:
If you fly often you might have noticed the rules changed on transporting lithium ion batteries for just this reason. If they are not in the device they need to be in a container, original packaging, etc. This is to prevent damage and small fires.

While Li-Ion has no memory effect and does well to stay charged rather than stay discharged. Extremely frequent topping off/charging is bad. I hesitate to define frequent but if you could even start to accuse your self of frequently plugging in the USB cable for the sole purpose of charging I would be worried. I mean were talking more than a few. 1 to 2 maybe 4 or 5 would be normal for various people. Obviously if the phone needs to be charged, charge it. This shouldn't be something that has to be thought about.
[Samsung Epic 4G Touch] slick_rick:
I was fighting the battery bulge. Just ordered a new OEM battery off Amazon.
[Samsung Epic 4G Touch] squshy 7:
Hmm...see I've read differently, that Lion batteries are happiest at 50%.

To the comment about shelf life...while this is true, they certainly should have a life longer than a year, which is how old our phones are at this point, plus a couple months.
[Samsung Epic 4G Touch] Ravaged Pheonix:
It's not the plate that swells, it's the electrolyte expanding due to heat which distorts the plastic casing. Once it expands like this it introduces a gap between the electrolyte and the plate. The area that still makes contact now has a higher load than the areas not making contact. This will cause it to rapidly deteriorate further at those points. The lower surface area making contact will not be as effective at transmitting power in and out of the plate.
[Samsung Epic 4G Touch] jefbal99:
I had a bulge in my stock battery and both of the aftermarket batteries I bought. My Corp Sprint store just replaced the stock with a new one. The after markets were out of warranty.

I mostly utilize a holster, occasionally pocket.

Used the Wall charger from the after market batteries on all 3 batteries
[Samsung Epic 4G Touch] blackcanopy:
I've seen enough warnings/evidence already, including this one, to convince me to stay away from aftermarket chargers (especially the cheaper ones)... not saying that your is. It sounds like you may want to avoid using that charger in the future tho..:D

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[Samsung Epic 4G Touch] RainMotorsports:
Always recommend against cheapos. I have a pretty horrible 1 amp one from the dollar store that I wouldnt even let a friend use. I stopped using it because I can't find it... lol

Walmart has Rayovac chargers 1 amp for wall and split 2 amp for car which I use alot. I use my old 700mah charger from my last Samsung phone on the daily and my Sprint branded battery charger I plug into a RCA split 2 amp tablet/phone charger. So far nothing bad and I would feel safe recommending them versus no name junk. But both Rayovac and RCA's stuff is usually cheap foreign stuff and its hard to 100% recommend them over cheap stock korean junk :p
[Samsung Epic 4G Touch] PoppinJ:
My wife and I both have had an Epic 4g for about a year without any issues. I didnt even know that these phones had a battery bulging issue.
[Samsung Epic 4G Touch] RainMotorsports:
They don't. At least not any more than every single device powered by a lithium ion battery. You guys have an Epic 4G or an Epic 4G Touch? Just wondering 2 really different phones.
[Samsung Epic 4G Touch] blackcanopy:
Yea, I still use a charger from my old Epic 4g about every day too. I keep it in one room and the one that came with my E4GT I keep in the bed room for over night charging. I do have an aftermarket USB/wall charger I keep at work that I think if of good quality, but I can't remember what is called.. and haven't had any I'll effects yet.

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[Samsung Epic 4G Touch] carwashman:
When my E4GT reached just over a year old, it was ready for a new battery. I am a heavy user and read somewhere that a battery is only good for about 300 charging cycles. My best advice would be to stay away from car chargers. Unless you do as I did, buy a A/C power inverter for car charging.

Sent from my CNA infused Samsung Epic Touch
[Samsung Epic 4G Touch] Ravaged Pheonix:
October...
[Samsung Epic 4G Touch] MultiLockOn:
My battery went to **** not too long ago, took it out and the damn thing had bloated into a perfect sphere aha, got a new battery and the phone is wonderful again. Seems like aosp roms really take a toll in the battery
[Samsung Epic 4G Touch] -EViL-KoNCEPTz-:
Its a combo of hightemps and poor design on the internal battery walls that separate the 3 cells inside. Samsung screwed the pooch when they tried to cram 1800mah worth of cells into a 1500mah sized housing by shaving the cell walls to bare minimum standards

I like to break stuff! :D
[Samsung Epic 4G Touch] kchannel9:
4100mAh Qcell extended battery and Paranoid Android (with Exit Only's tweaks) made my phone into a whole new experience. I've had 2 bloated batteries in 2 different ET4Gs, stock battery is crap IMO.
[Samsung Epic 4G Touch] egzthunder1:
Well, since I see that this thread has resurfaced...

I started noticing that my battery was dying faster and faster as time went by. A couple of weeks ago, my phone was shutting off the moment you demanded some oomph from the processor (like games) and it would have a hard time trying to start again. I took a look at the battery and remembered about someone mentioning something about the swelling of batteries and that a simple test would be to try and spin the battery on a flat surface. Needless to say, it spun like a top. I concluded it was battery even before seeing the battery. However, and truly what led me to send it via RMA, when the sudden power down happened, bits and pieces of my user data was wiped (like certain settings (wallpaper choice, wifi access points, etc) as well as app data (my game saves of Indestructible for instance), but it was random since it didn't always happen.

So, since my device was still under warranty, I got Samsung to issue an RMA and sent it back to them explaining, to the best of my abilities, what was happening. They just sent it back with a brand new battery and a replaced USB port and a power button (for some reason since both of them were fine afaik).

So, if you are experiencing any of the above symptoms and your device is still under warranty, send it to Samsung. It will be back in less than a week...

Word of the wise though... swollen batteries have a bad tendency to explode. So, unless you want to end up with a hole on your side or your hand, check the battery and change it if it is swollen. It isn't a matter of battery life but a safety concern...
[Samsung Epic 4G Touch] MoHoGalore:
That's interesting that the USB and Power button were replaced... Wonder what the story is behind it if you hadn't noticed any issues. They did it preemptively for a reason..
[Samsung Epic 4G Touch] egzthunder1:
I can see the USB port being dirty from lint in my pocket and them replacing it "just in case", but the power button?.. beats me. In the resolution message that I got back from Sammy, it simply said "replaced components"... not really sure, but they may be trying to avoid an issue due to defective batteries and thus, they don't specify what they did (and just change parts for the hell of it or as a diversion)...
[Samsung Epic 4G Touch] gatesmarch123:
My battery was so swollen I didn't have to spin it. It looked like it was about to give birth to another one!
[Samsung Epic 4G Touch] jbriggs33:
I have taken apart several hundreds of small electronic devices that used lithium ion type batteries in the past. Most of these batteries were beyond horrible.

Many of the units had been in storage for a couple years, but some were recently 'retired' if you will.

These units had all been in a warehouse that did not really have a controlled or stable temperature.

I can definitely say that going from freezing temperatures to hot will cause these batteries to expand to well over double their size, and they will explode. Most users probably won't subject their phones to the same temperatures, but I wouldn't rule out the heat from keeping your phone in your pocket at all times causing battery issues.

I can also say that improper charging is another main culprit. I work for a headset company and cannot tell you how many battery issues we see due to improper charging.

I've heard all of the arguments from drain the battery fully every time before charging, to "keep the battery above 20% charge but never beyond 80% charge".

In general with lithium polymer batteries, they will stop accepting a charge at some point regardless of actual use or maintenance. I do not know the specifics of the E4GT battery, but for example, the headsets I work with have an expected life of around 1000 total charges - whether the device is charged from fully depleted or barely used counts as 1 full charge.

With most lithium type batteries, charging them once they are near or are fully depleted, allowing them to receive a full charge is your best bet. This will allow them to receive the maximum number of total charges over their life span.

I definitely would not recommend keeping your phone on the charger anytime it is within reach - as was previously stated, many cheap or poorly designed chargers will continue to apply a charge to the device even once the charge is full.

dunno if this helps or provides any new information, but oh well.
[Samsung Epic 4G Touch] sduelund:
Iphone and Samsung Battery Bulge

Hi All,

I would like to chime in on my experience,

The company I work for has a significant fleet of test and dev Android and Apple devices, these are physical off the shelf devices, purchased through a retail shop.

The devices are powered on 24/7 running 1 application 24/7 which is developed inhouse, but does nothing amazing to the phones just web browsing.

The devices were housed in a air conditioned, dust free, water free, environment. Have never been dropped, never damaged, original operating system.

We use a "DATAMATION DS-IP-8-USC UNIVERSAL 8-PORT USB CHARGE/SYNC STATION" to charge all the devices at once and maintain the power, as well as providing Xcode and Android Studio access to the devices.

Yesterday during my weekly visit to the data centre I noticed the devices looking a bit strange, all the Samsung S4 and Iphone 4's (5 Samsungs and 5 Iphones) which were all purchased and deployed about 8 months ago have ALL got a bulge on the screen and the apple devices screen had poped out. (Needless to say all the devices were removed from the data centre).

Of the devices deployed which includes Ipads, Galaxy Notes, Ipods and mobiles ONLY the Iphones and Samsungs experienced the issue, but all (100% of the devices) have the issue, all at the same time.

My theory is that due to the excessive charging (being plugged in 24/7) and online working (24/7), even though our programs have breaks and a screensaver feature the devices have become overcharge causing this.

The devices were not physically warm when i removed them, the batterys are were not hot to touch but the bulge was very noticeable.

Hope this is informative to someone out there. If anyone has a different idea as to why, I would love to hear it.

Steffen.
[Samsung Galaxy Player 4.0, 5.0] tomkingsk:
Hello.

I look for YP-G70 wifi 5.0 stock /XEZ rom.

I bough it in Slovakia and I cant find the stock rom for it.

Have it someone ?

Sorry for bad English im from Slovakia :D
[Samsung Galaxy Player 4.0, 5.0] iurnait:
Try samfirmware
[Samsung Galaxy Player 4.0, 5.0] tomkingsk:
There is it not :/

When i download some of theese will I have warantyty ?

I think the /xez firmware is not to download.

Will I have kies upgrades with the other roms from the site ?

And is there slovak language ?