yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II SGH-I777] phatalbert1000:
My Experience with Korean NFC battery kit

Recently received my battery kit from the Korean ebayer mentioned a few posts ago. Shipment took about a week (which was a pleasant surprise).

Battery performance has been great. Seems to last much longer- I would estimate I end the day with about 20% more charge that I would have with the old battery- which makes sense when you do the math.

The amount of modding I did to the case was pretty high. I probably hacked at it with a fine (conical) dremel tip for about an hour or two- trimming then testing, trimming then testing..... Overall, I am pretty happy with the fit I finally got. It is not the super-tight fit of the original but most people wouldn't notice the tiny gap near the middle of the case now. I do, however, sometimes think I feel it feel when gripping the phone but overall it is not a major annoyance.

For those of you preparing to embark on your own case-trimming adventure- I would advise you to try and keep whatever you can of the side-tabs and only cut them last after your have done the modding I'll mention below. I doubt you can make any of the side tabs work but I fear I cut off completely a little too soon when they may not have been the main problem.

When I first trimmed what I knew needed to be trimmed of the side tabs I snapped on the case only to notice a huge "bowing" gap towards the middle. I assumed the cover was too long but it was not. I eventually found (as a previous poster mentioned) that the "lip" of the cover extended too deep towards the screen. This was especially a problem on the top corners where this lip made the cover stand a good bit off the phone itself and

greatly contributed to the "bowing" effect towards the middle.

It was only after I ground down parts of this lips that most of the gap was eliminated.

Again, I don't know if there is any hope at all for any of the side tabs (and I suspect there isn't. But I would encourage future modders to only grind off the parts that are sure won't fit (so maybe one entire side tab and half of another) before they set to shaving them all off completely. In my case, they may have been part of the problem but the deeper lip was at least as significant.

The case pops off quite easily when you are trying- but so far it has stayed put on my phone in day-t0-day use.

Verditct: If you need a bigger battery, want NFC, have a dremel with fine tips, and aren't OCD about a little gap- you will probably be happy with this kit.

Here's a link to some pics where I try to illustrate the fit of the cover.
[AT&T Samsung Galaxy S II SGH-I777] phatalbert1000:
Just a quick objective reference point. Today I have two hours of screen time (part of which was using a bible app with black background), and currently have 49 percent remaining (11 hours 40 minutes on battery). Yesterday I got 3 hours screen time, 13.5 hours to empty: included 30 minutes of 3D gaming an about an 1.5 hours of navigation.
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
I'm almost certain polobreaka owns an i9100 and probably doesn't know it. I know this because I purchased the exact same international version battery kit with the same model number and it doesn't fit my i-777, so either i'm right or every single person who bought the same version got defective covers ;-)
[AT&T Samsung Galaxy S II SGH-I777] phatalbert1000:
Haha! Interesting thought. Do you have a big button on the front or what polobreaka? :)
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
LOL if I really have an i9100, I'd be piss with this stupid att branding on top of my screen, no FM radio, and making me spend another $50 for the Korean kit because the intl battery gave me boot loop.
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
This battery and the help with kernel, scripts, and overclock/undervolt settings, my best is here. 52 hours with 5% left. I disabled miui battery usage monitor because it cause wake and conflicts with betterbatterystats. By looking at cpuspy, looks like about 5.5 hours of screen time if deep sleep is at 46.5 hours.

This battery is amazing.
[AT&T Samsung Galaxy S II SGH-I777] justbenice:
buy i9100 Anker 1800 for less than 10$ and you have very good battery . In i9100 forum , people report that Anker 1800mah work more than 2000+ mah .
[AT&T Samsung Galaxy S II SGH-I777] kingfisher1111:
I would like to know if this battery is compatible with I777 Samsung galaxy S2 ATT version?

http://www.ebay.com/itm/260899780576?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
you already asked me that in the PM and i responded.

the battery will work with no problem, no boot loop. cover needs modifications to fit.
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
Waste of $$

I dont see the point in getting a 50$ battery that only has a little bit more capacity and you have to modify the back to make it fit. If this battery was say 30 dollars then i would say shut up and make my money, but 50? Why not just get the two Hyperion 1800 mAH battery's from amazon for 25$? Guys do your research! Some of you got both the international and the Korean batteries so you have a NFC battery, which will die by the time NFC get used in the US and a functional back cover? LOL
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
you spend your money however you want, i spend mine however i want.
[AT&T Samsung Galaxy S II SGH-I777] phatalbert1000:
You's trollin'.

Not saying that the aforementioned hyperion is the right choice for some people, just not me.

1. It is not an official Samsung battery. Lithium-ion is a potentially explosive substance (I've had a close call with it in the past). Personally, I feel best with a samsung made battery attached to my 400 dollar phone and 3 inches from my crotch.

2. "A little bit more" capacity is actually 18%. For me, that was all I needed. I am running a custom rom and and run few widgets but still wasn't quite getting through the day. 2000mah was all I needed and 1650 wasn't enough.

3. Anyone can put any mah claim on a battery. Granted, I haven't looked for evidence that the hyperion battery actually has 150 more mah than the oem battery but I kind of doubt it if it is exactly the same size.

4. You suggested purchasing two hyperion batteries instead of one 2000mah battery. Personally, I don't need three batteries and I can't imagine carrying an extra battery with me to change at some point during the day and then recharge independently of the battery I switched to. With the 2000mah battery, I don't have to swap batts in the middle of the day and if for some reason I need a spare I have my oem 1650 in the laptop bag as a last resort.

5. I want NFC and your projections about the battery dying before NFC is implemented are already false. Visa's nfc app is well on the way and google wallet is on the horizon as well. Ton's of gas stations and grocery stores around me have nfc point of sale devices. And that's just for payment processing, not to mention bluetooth headsets etc.

6. It is not a 50 dollar battery, it is now a 36 dollar battery! It was 45 when I bought it from the same seller.
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
1.) The "close call" problem was probably your fault. I can only imagine it causing a problem during charging, maybe you overcharged it or used an inappropriate charger, who knows. During discharging I'm sure your crotch will be safe. Your crotch will also promptly notify your nervous system about any drastic increase in temperature if the battery were to spontaneously heat up.

2.) Granted, that 18% can go a long way and I'm considering purchasing it for 36 dollars. But im not sure why your original battery doesn't last you at least one full day. I too run custom roms and experiment with voltages. I used MIUI from galnet running SIYAH kernel and a v6 supercharger script. My battery lasted my 1.5 days with moderate use. Yesterday i changed to unNamed rom with siyah kernel and the battery is up to 7% right now; that's after playing games on the train for 2 hours on the way to work, having Wifi on constantly, texting and listening to music. Id recommend you download setCPU app and mess around with the voltages it can save you a lot of battery life.

3.) The hyperion Battery is actually is a good choice if you don't mind the swapping of the battery. Just go to CWM and reset the battery stats.

4.) You say "you cant imagine carrying an extra battery to change at some point during the day" and yet you have the 2nd battery in your bag to change in an emergency. This is the beautiful thing about android devises is that you can change batteries or hot swap them if one dies; unlike the iPhone. Its impractical for you because you may not have a dock that can charge a 2nd battery. I do so charging the phone and the battery at the same time will not be a problem.

5.) It does not mean that once Google wallet. apk and Visas NFC apps come out all the businesses will be like "oh **** time to upgrade". NO, this is an expensive upgrade for businesses and will roll out slowly. Granted "SOME" places have this technology, but lets face it NFC works for places like Japan because of population density and things need to be done/ payed for quickly. I live in NYC and iv seen NFC on only one train station on 68th street, and guess what NO ONE USES IT. I may be wrong about this, this is not the thread to discuss this. But NFC is in its infancy and this battery will die by the time it fully unrolls. Go ahead use it in that one grocery store and gas station that has it, no one is stopping you.

6.) Thanks for the link, ill consider buying this battery now. because before, i did not see a point in paying 1/3 the price of my phone for a battery.
[AT&T Samsung Galaxy S II SGH-I777] phatalbert1000:
Dimatchka: thanks for the response!

1. You are probably right about it being my fault, however, it was during discharging. The li-ion issue I had was with a 10440 in a flashlight that wasn't designed for it, i.e. it discharged it way too fast. It did make for a really bright light though! ;) One day, it decided it had enough and started to overheat.

Full disclosure: I have put more than one 5 dollar ebay battery in an iphone (used 2g's)- threw caution to the wind in regards to my crotch I guess :) I did have an issue with one of them, nothing exciting, just random power-offs.

2. Thanks for the advice about undervolting. A few weeks ago I was having some issues with Android OS usage on Unnamed. The problem was resolved somehow after switching to IcsScrewd. I have played around with voltages some but right now I'm seeing what kind of life I can get from this batt, IcsScrewd and the Siyah kernel. (I'm unfamiliar with the v6 supercharger script, has it helped your performance/battery life?)

3. Good to know, thanks. I haven't done much research on the normal sized aftermarket batts.

4. You are right about lacking a dock. I personally just want to have the simplest daily experience possible. I don't mind modding the cover but after that I just want to be able to use it without having to think about it. If you don't have a problem with swapping batts (and you have a dock) you get the pretty nice advantages of keeping the small form factor plus having over 3000mah to play with!

5. I'm surprised there is not more NFC stuff in NYC... I live in Kentucky and I'm seeing it more and more (just not in Wal-Mart yet). I'm hoping that the next iphone has NFC as that might help to propel business to make the upgrade. How often will I use it in the next 2 years, maybe not much... It's just one of those things where I like knowing it's there- mainly for bragging rights over friends and relatives ;)

6. Glad to help! I was going back to see what I paid and was like "Crap!" Still glad other members can save now. 35 is definitely much more palatable than 50. I'm not sure I would have even purchased it at 45 had I not had the ebay bucks.

Thanks again for taking the time to respond!
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
No problems, glad I could help. I'm definitely getting that battery when mine starts to die i could probably get 2 days out of that bad boy on one charge no problems. I used to do a lot of experimenting with electronics too before haha now I don't have as much time :(

Besides based on the pictures it looks like this battery cover is getting rid of that "kick" that the i777 has and makes it look more smooth. The back will probably look like the Skyrockets back, which i like a little bit more. Sorry if i came off angry before, it was because i wanted to find something out from the development page and apparently i cant post anything because i need a minimum of 10 posts to share my opinion/ask for help on the development thread. Good talking to you phatalbert1000. I cant post links yet but there is a hyperion battery for 7 dollars on amazon, with shipping comes out to 12. It wont boot loop and can be charged through the phone, but no NFC.

The v6 script is a memory manager script its awesome, it makes the phone run without any lag if you have a lot of widgets open. Its just a better memory optimization tool. You should instill it. There are some videos on youtube on how to do it, but now the most recent one is pretty much automatic. You just have to select some options, like 2 for scroll speed and then (1-35) choose 9 for the turbo mode option.
[AT&T Samsung Galaxy S II SGH-I777] michintom:
For those who purchased the international battery and the cover, does these tabs look the same?

http://www.gogotoshop.com/product_info.php?language=en&currency=USD&products_id=4134

I rather buy the back cover from this website and purchase the battery off ebay.
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
those covers looks like a replacement cover for the standard 1650mah battery. it

will not

fit over the 2000mah battery.
[AT&T Samsung Galaxy S II SGH-I777] \/icious:
So wait are you saying playing games for 2 hours only drained 7% battery? If so can you reproduce that and post a screenshot. I'm running MIUI+ V6 supercharger+ KAK+ capped @800mhz+ -150mV on the 3 steppings+ screen brightness all the way down +blocking autostarts on unnecessary apps and I still can't touch those results. I'm exchanging this thing if that's the case
[AT&T Samsung Galaxy S II SGH-I777] michintom:
Thanks, I guess I need to buy the international and the Korean one.
[AT&T Samsung Galaxy S II SGH-I777] anikiup:
I bought one from amazon. Returning it today since I could not charge the battery. The phone turns itself off and still the battery does not charge. Now I am looking again for a battery for AT&T GS2.
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
i'm giving up on trying to make this extended battery thing work, now i'm stuck with two extra batteries, 1 non nfc and 1 nfc. I don't have the covers because the got messed up when I tried modding them. If anyone wants these, let me know. $55 shipped for both ( yeah I know i'm taking a loss).

NFC battery SOLD! I'll take $25 for the non-NFC shipped.
[AT&T Samsung Galaxy S II SGH-I777] Hyp3rdr1v3:
...............
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
What it will look like

Not my images this is from the i9100 thread.

https://picasaweb.google.com/114739...gI9100BatteryPack?authuser=0&feat=directlink#

https://plus.google.com/photos/114739738991840956741/albums/5646590965674575489?banner=pwa
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
Like you said " i9100"!
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
what about it? my i777 looks the same.
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
nicee

Sorry i didn't specify, i was leaning towards the "your phone will look like the one in those pictures".

Btw is that the international cover or the modified Korean one?
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
yea i know, i was responding to veliksam.

its the international cover. no mod needed.
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
What I meant was i'm sure the extended battery fits the i9100 but we have the i777 which is well known (by many members) by now that there is no extended battery cover that fits in our phones without modification ;) So, if someone wishes to sell me their no mod extended battery cover, I will pay $100 for it :)

Only then will I be a believer!
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
Im very tempted to buy the international kit for 50 buks keep the battery and send you that battery cover, i get a free battery and 50 $ on top of that xD
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
Please be my guest, if you believe it will fit my i777 then go for it! However, if it does not fit, I would expect a full refund ;)
[AT&T Samsung Galaxy S II SGH-I777] michintom:
Thanks for the links. I just ordered mine :D
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
Please do me/us all a favor and let us know if the battery cover fits with no modification. Maybe the seller from those links has some special kits with no mod battery covers?

Sent from a Samsung Galaxy S II
[AT&T Samsung Galaxy S II SGH-I777] michintom:
Which cover? The Korean one?

I'll post pictures and fitment issues once I receive both packages. :D
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
No not the Korean, the international one. I bought the exact same model number and it did not fit, that's why I'm wondering if maybe the seller from those links has some special one that fits worth no mods.

Sent from a Samsung Galaxy S II
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
international batts

since a lot of ppl here have both sets the international and korean models, and i know that the international battery will not charge in the phone.. any one selling?
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
I can sell you my international version battery that boot loops if you might have use for it.

Sent from a Samsung Galaxy S II
[AT&T Samsung Galaxy S II SGH-I777] michintom:
I have one for sale :)
[AT&T Samsung Galaxy S II SGH-I777] michintom:
Here are the pictures as promised.

Ordered it yesterday, and arrived today.

I'll post comparison pictures once I receive the Korean one.
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
We want to know if the cover fits perfect with no modification?

Sent from a Samsung Galaxy S II
[AT&T Samsung Galaxy S II SGH-I777] michintom:
Ill post pics when Im off work.
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
I'm sorry for being so persistant but are you saying "Yes, it fits perfect and I will post pics to show you" or "No, it doesn't fit 100% and I'll post pics to show you"? Anyways, I'll be patient.:D
[AT&T Samsung Galaxy S II SGH-I777] michintom:
Uploading pics at the moment.

Here is my test so far,

UK Battery Cover - Doesn't fit.

UK Battery (No NFC) - Boot Loop.
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
So it's confirmed! Even the links from which polobreaka purchased his supposedly no mod required battery cover does not fit the i777, the latest victim of that BS has confirmed it. I'm sorry people are led to believe lies and waste their hard earned money!

Sent from a Samsung Galaxy S II
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
wtf? i have no reason to make up bull****. you're just mad you cant get yours to fit probably from being too stupid and modded the **** out of it. dont be ****en accusing me of something when i have proven my cover fits. go ahead and keep moping around about wasting your hard earned money while ill enjoy my phone with my extended battery and my awesome unmodded cover which fits perfectly fine.
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
Why are you guys hating on polo? He's absolutely right! This is not a definite science since there is no extended battery for our phone! Either you get lucky or you don't! Sellers supplies change! We just need a picture of the box for the extended battery that fits! From there we can get serial numbers and people can order the correct model that has a matching case and a serial for the working battery and stop playing this guessing game! You take the risk you spend the money no one to blame but yourself! That's life!
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
ill take a screen shot of my receipt to show the models ive bought and take pics of the different covers + batteries ive received (and have been using). ill make a video of my cover fitting without mods.
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
So somehow, you are the only person that has magically been able to buy that model number kit and have the battery cover fit! You must be a Samsung insider! Anyways, all i'm saying is stop misleading people into thinking that the battery cover from the link you provided will fit the i777! Also when I recieved the battery kit (the same model you have) I first tried to fit it on the phone without modifying and guess what? It did not fit! As for "****en" accusing you, damn right i am, why don't you prove it by selling me the damn cover for $100 and making a profit, it's a win win for you! Concearning the "too stupid", come down to Florida and make sure you bring the one that supplied the ovum for your daddy's sperm, and i'll show her who's stupid! ;)
[AT&T Samsung Galaxy S II SGH-I777] Hyp3rdr1v3:
wow. man, relax
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
Actually, this is me relaxed :) If he does take up my offer to come down to Florida, then the relaxing will be over ;)
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
video:

you can see my tabs are not modified and they click into place

http://youtu.be/0mlULvK1PrY

Korean (left); international (right):

korean (left) EB-K1A2EBSG ; international (right) EB-K1A2EBEGSTD :

korean ver side tabs dont match:

Korean ver on top; stock on bottom

international side tabs match

Note: non of my tabs are modified:

international ver on top; stock on bottom
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
Good man

Thanks for the serial numbers.

Pictures are worth a thousand words, im not sure why that other dude is flipping out lol, he should go on the i9100 thread and sell his battery to salvage what ever money he can.
[AT&T Samsung Galaxy S II SGH-I777] phatalbert1000:
Welp, that settles it :)

Appreciate you taking the time to post that polo. Consider yourself "thanks'ed"
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
ummm... did you guys not see this post: http://xdaforums.com/showpost.php?p=22332366&postcount=148 ?:confused:
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
Wow you are a lot more stupid than I thought.

My post just proves that MY cover fits MY phone. i dont even know what you're trying to get that. just stop posting already
[AT&T Samsung Galaxy S II SGH-I777] runtohell121:
So in the end, the Korean Battery is the one you want, but for the cover, you want the international one...
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
That is correct.. if you have the extra $$

You can just buy the Korean model by it self and simply mod it by cutting off the side tabs , so basically your cover will attach via the top and bottom tabs.

Ignore the comments made by veliksam, not everyone is home with that guy. Not sure how one manages to screw up a mod with 2 covers,his non-fitting UK cover and the Korean... just dremel those side tabs off or heat up your knife and scrape it off.

Another solution that i think might work, and ill prob try is to get this http://www.ebay.com/itm/Black-Back-...ccessories&hash=item27bf8faaa5#ht_4331wt_1163

it appears to get rid of the hump on the phone which means that we can cut away the plastic square for the battery to fit..
[AT&T Samsung Galaxy S II SGH-I777] veliksam:
How stupid are you? Do you not understand that the person from that post bought the kit from the link you provided and it did not fit properly? You should stop posting your bs lies! You just took a screen shot of an i777 and then took another shot of the back of an i9100! Point is there is no extended battery cover that fits without modding it.

---------- Post added at 09:16 AM ---------- Previous post was at 09:16 AM ----------

Hey dimatchka, Ee-dee nah hooy!
[AT&T Samsung Galaxy S II SGH-I777] raven35:
Has anyone been able to find these batteries locally instead of ebay or Amazon?