yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II SGH-I777] mrdead72:
i have a momax 2500 mah it fits my i777 perfect without any mod to the back cover it is for a i9100 i guess i ordered off ebay its a x-level momax battery 2500mah fits perfect with no mods doesnt charge in phone havent tried the aopk deal im a newbie cant even tell u what a aopk is mayb soon ill learn anyways just thought id share this and maybe it will help with out all the modding and maybe someone will tell me what aopk ( a rom ? ) !!! oh well !!!!
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
Lol dam that's one heck of a run on sentence... anyway if you claim that your 2500 battery fit without modification or any bigger cover then I will disappoint you... its not a 2500 mah battery. Go to android development and download the best i777 from AOPK made by task and ktoonsez :D:D:D

Sent from my SGH-I777
[AT&T Samsung Galaxy S II SGH-I777] mrdead72:
if i knew how to upload a pic i would its a 2500 mah sorry says it on it its a replacement for i9100 its the same size i also can go to a local battery company here they rebuild alkinds of batteries and they to said they can up the mah and get the same size ive done it on a roomba vacuum battery but ill try and post the ebay link which i bought it from it says on the battery i9100 for the sg2 i9100 dont know if its a true 2500mah but its on it and i know momax / x-level is a pretty big battery player
[AT&T Samsung Galaxy S II SGH-I777] mrdead72:
here is a picture it says xtra slim line
[AT&T Samsung Galaxy S II SGH-I777] mrdead72:
it says 2500mAh Extended Slim High Capacity Battery for Samsung Galaxy S 2 II i9100 u can go check it out this is the item # on ebay Item: 221012472544

---------- Post added at 06:29 AM ---------- Previous post was at 06:11 AM ----------

well i delivered what i could and it fits with no mod at all !!! if its not a 2500mah then well nothing i can do !! but i dont lie about anything i told you just what i had and how it worked out and showed u pictures and gave u a item number to go to ebay and look for yourself nothing more to convince to anyone it is what it is nothing more !!! anyway thanks no hard feelings if u dont like the battery dont get it !!!
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
The best way to compare battery capacity is by the size of the battery... the bigger the more charge it can hold. If your battery is the same size as the stock chances are its 1600mah not 2500. You're prob running on a battery made in china or something and its claiming the incorrect capacity. It kinda reminds me of a battery that people were going crazy about a few months back in the accessories thread about it holding 2000mah and being the same size as stock.. in the end it was a fake.. physical battery size is your best indicator

Sent from my SGH-I777
[AT&T Samsung Galaxy S II SGH-I777] mrdead72:
could b a fake, hell if i know, i dont know a way of truly cking it out to test it to know ! i dont use it on the count of it not charging in the phone so i dont know if it truly last longer i may swop roms to the aokp and try it out in the next few weeks but not today
[AT&T Samsung Galaxy S II SGH-I777] \/icious:
Battery technology is not evolving quickly at all. If Samsung could have made the battery hold more charge with the same size they would have. Battery life is a huge selling point. That's why the 2000mah battery Samsung offers is slightly bigger. I do think they are working on a way to use pure lithium which I wanna say they claiming that it will potentially quadruple capacity.
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
That would be an expensive battery I'm sure

Sent from my SGH-I777
[AT&T Samsung Galaxy S II SGH-I777] joeybear23:
I just got the 2000 mAh International version today, and after giving up on trying to trim the back just right I just put the original backing on it (didn't have to force it)... looks fine and my case fits over it as well.

Plus I run Task's AOKP ROM, so charging is not an issue either.

Great thread guys, thanks for the info.
[AT&T Samsung Galaxy S II SGH-I777] \/icious:
i think that is actually what has them held up is that the process to make them is much too expensive.
[AT&T Samsung Galaxy S II SGH-I777] nappent:
I think there is more effort in making other components on the phone more efficient such as the screen, modem, processor, and the OS in general, then there is for the battery.

Not to mention paint-able solar panels are something we will likely see on some specialty phones in the semi-near future to allow your phone to charge while in the sun or direct light. Wireless charging pads may be included as a stock feature. Most likely that will be the next big thing.

Improved battery tech would be an easier fix but if you look up the history of battery tech, there really hasn't been any significant improvements for the last 20 years. Pretty sad, isn't it?
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
There is only so much you can do to a galvanic cell only so many elements you can use that will yield a consumer friendly battery.... The battery of the future are capacitors with crazy dielectrics I can guarantee you 100%:D

But it will be years before something like this hits phones. I know they are currently building a cruise ship powered entirely by capacitors.

Also check out how rail guns work pretty cool stuff. Physics rocks! :thumbup:

Sent from my SGH-I777
[AT&T Samsung Galaxy S II SGH-I777] yurkinator:
Nope

I just got the international battery. It didnt fit. I tried shaving some the bottom nubs and various other places. Just doesnt fit. Would not recommend anyone even bother. Seems a crap shoot as to whether you can get one to work.

I ordered this anker 1900mah set from Amazon.

http://www.amazon.com/Anker-1900mAh-Batteries-Samsung-GT-I9100/dp/B0058SJ5Q4/

Two batteries and a charger for $20 that will fit with original cover.
[AT&T Samsung Galaxy S II SGH-I777] joeybear23:
Do you have the i777 or the i727, or are you saying the cover won't fit (not the battery)?

Warning - posted with Swype
[AT&T Samsung Galaxy S II SGH-I777] yurkinator:
I have the i777. The cover does not fit.
[AT&T Samsung Galaxy S II SGH-I777] Evewon:
I was under the impression that off brand batteries were a NO NO, and only to use Samsung batteries. Isn't the Samsung battery a "smart battery"? Do these work the same as stock, any danger is exploding? If they are good, gonna have to get them too!
[AT&T Samsung Galaxy S II SGH-I777] yurkinator:
Anker is a good brand from what the reviews say. The battery does not have NFC so it will not charge with a Samsung based ROM.
[AT&T Samsung Galaxy S II SGH-I777] joeybear23:
If you have a case on yours, just do what I do: put the 2000 mah battery in and put the original cover back on it. It makes it bulge just a little, but it is not noticeable with a case.
[AT&T Samsung Galaxy S II SGH-I777] RojasTKD:
For those of you with the Korean 2000mah battery, does you NFC work?

I just got the battery linked below, but NFC doesn't work (Battery is marked NFC).

http://www.ebay.com/itm/260899780576?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
[AT&T Samsung Galaxy S II SGH-I777] mrprince123:
If NFC doesn't work, return the item?
[AT&T Samsung Galaxy S II SGH-I777] ARPwizard:
I'm also curious to know how the official 2000mah battery works with the i777...By the way amazon has them cheaper than that eBay listing was.
[AT&T Samsung Galaxy S II SGH-I777] polobreaka:
i sold my i777. if anyone is interested, i have 2 oem (1 nfc and 1 without) 2000mah battery and the 2000mah oem battery cover that i didnt need to modify to fit. i tried it on 2 phones and snaps right in perfectly fine. PM me.
[AT&T Samsung Galaxy S II SGH-I777] ZARuslan:
I think i777 will work with 2000mah battery from i9100 on non stock firmware ( cyanogen mod for example). Is that right?
[AT&T Samsung Galaxy S II SGH-I777] stone_ship:
Yes, non-stock is the key. At least on ICS, people had charging problems on touchwiz firmwares
[AT&T Samsung Galaxy S II SGH-I777] muchanagel:
I'm running slimbean 4.2.2 with my extended battery and it's running fine. Bought it off Amazon.
[AT&T Samsung Galaxy S II SGH-I777] stas333:
The Korean ebay seller doesn't seem to have anymore batteries. My girl purchased one from Amazon, and it is stuck in boot loop. Does anyone know where to get the one that will work?

Thanx.
[AT&T Samsung Galaxy S II SGH-I777] ZARuslan:
Bootloop is only on samsung based firmwares. On aokp/aosp should work fine.
[AT&T Samsung Galaxy S II SGH-I777] stas333:
Ya, she doesn't want to root her phone.
[AT&T Samsung Galaxy S II SGH-I777] mojoe_24:
Are there any extended batteries that don't add any bulk? Or if they do don't go bulkier than the little bump on the bottom?
[AT&T Samsung Galaxy S II SGH-I777] Dimatchka:
Then she can't use extended battery unless it's the nfc one from Korea.
[AT&T Samsung Galaxy S II SGH-I777] stas333:
That's what she is looking for, but where to buy? EBay doesn't have any
[AT&T Samsung Galaxy S II SGH-I777] raven35:
I recently purchased the 2000mah extended battery (for the international model of the S2) but I'm getting boot loop. I started with Shostock 3 then flashed to SuperNexus 2.0 M1, and now I'm on Slim Bean. Still no luck. Any suggestions?:confused:

Here is my phone info:

SGH-I777

Android version 4.2.2

Baseband version I777UCLL6

Kernel version 3.0.31-CM-ga034655 fronti90@slimbuild #17

Slim version Slim-4.2.2.build.6-OFFICIAL

Build number JDQ39E

Thanks.
[AT&T Samsung Galaxy S II SGH-I777] ctg60000:
Battery for i9100 does not work in i777. when u charge it, u get boot loop... that is a known issue. use the search option in forum, u will get details. may be u can try non-samsung ROMs...
[AT&T Samsung Galaxy S II SGH-I777] raven35:
Okay, got it working now. Did another wipe and reflashed Slim...no more boot loop...now just need to fix the back cover...:)
[AT&T Samsung Galaxy S II SGH-I777] r_diaz13:
Where did you get your battery? Does the regular back cover work for you?

Sent from my SGH-I777
[AT&T Samsung Galaxy S II SGH-I777] raven35:
I purchased through Amazon...http://www.amazon.com/gp/product/B005FYHRY8/ref=oh_details_o02_s00_i00?ie=UTF8&psc=1

The back cover doesn't fit 100%...I tried shaving the bottom tabs and got it to where only a little bump appears on the back...the phone case I use covers it up so I'm good.
[AT&T Samsung Galaxy S II SGH-I777] Marduc:
Hey, I was wondering if anyone of you used one of these

http://www.ebay.com/itm/Andida-High..._Cell_Phone_PDA_Batteries&hash=item3f22851ef3

http://www.ebay.com/itm/Floureon-Ba..._Cell_Phone_PDA_Batteries&hash=item2ec9804681

How good is the battery life compared to original, and do they fit under slim cover.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
I'd like too know too (about Floureon), Andida pricing can't be right... $90 for a freakin battery??!?!

There's also this one I'm wondering about that says it fits the i777 and is cheap as heck http://www.ebay.com/itm/NEW-2200MAH-LI-ION-RECHARGEABLE-BATTERY-FOR-SAMSUNG-GALAXY-S2-II-I777-ATTAIN-/390616725317?pt=US_Cell_Phone_PDA_Batteries&hash=item5af2923745

I've been watching that for like two weeks and a ton of people are buying them daily, I'll get notifications of 26 people bought in the last 24 hours, 18 people, 35 people etc.
[AT&T Samsung Galaxy S II SGH-I777] yurkinator:
Just ordered the 2200 attain. Will let you know how it works.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Awesome, let us know. I emailed the seller but didn't hear back. They've got a ton of positive reviews (and bunch of negative for other products but then again it appears they sell in massive volume so statistically that's gonna happen). Appears to be a bunch of people buying these batteries too as I get that Ebay pop up saying X amount of people have bought this in the last 24 hours.

I think my i777 battery is dying, it doesn't last as long as it used to, I used to get 3 1/2 - 4 hours on screen time, now it's more like an hour and a half - 2 if I'm lucky and using the phone through the day or streaming it depletes way faster. Guess these phones have crap batteries as I've know other owners who after about 2 years or less said the battery went to hell lol. I've got an old ass 3GS that still last as long as it did originally lol.
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
Looking around for a new battery; yurkinator, did you receive the Attain and is it as advertised? I have the same questions surf1 has, but this deal looks almost too good to be true so would appreciate any feedback you have on it.
[AT&T Samsung Galaxy S II SGH-I777] yurkinator:
Ok I have been using the battery for a few days and do not see any noticeable improvement. I normally use the 1900 mAh maker and there is no real difference.
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
Thanks for the feedback. Still sounds like a great deal for a $5 battery, if it can last as long as your 1900.

Sent from the i777
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Thanks for posting back, I'm still using the stock 1650mah battery. How much of a difference did you see with the 1900 over the stock one? I'm pry gonna order it anyway since this battery is dying and nowhere near as good as it used to be.
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
I'm in the same boat, regarding this old 1650. I ordered one of the Attain's and they processed it and shipped it same day, so I should have it tomorrow or Saturday!

Even if it's not much better than the 1900 yurkinator uses, it's still better than our aging stock battery.

Sent from the i777
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Yeh I just ordered as well, either way still way cheaper then a Samsung brand stock battery or otherwise. Samsung shipped pos batteries in these phones. Few other i777 owners I know have the same trouble only 1-2 years old and plenty of post on these boards about it. I can barely get 1 1/2 hour on screen time now and that started about 2-3 months ago and I got this phone new so not even 2 years old yet (Nov will be), on ShoStock2 and 3 rom used to get at least 3 1/2 hours on screen time, but even now just streaming music or anything drains faster then used to.

Yet somehow our iPhone 4 and old ass 3GS get the same exact battery life as they did new, and that 3GS is like what 4 or 5 years old?
[AT&T Samsung Galaxy S II SGH-I777] devoidx:
does this attain battery need a replacement back cover to accommodate it or is it the same size as the stock battery?
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
Pretty sure it's the same size as stock, but will know further once it arrives. If yurkinator's around he could answer definitively.

Sent from the i777
[AT&T Samsung Galaxy S II SGH-I777] yurkinator:
Same size.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Did you get yours yet, if so how do you like it? Mine was supposed be delivered by today but I had to leave for a trip this morning, so it'll pry come in later today. Was hoping to swap it out as at the airport and two quick calls and a few text and I'm already at 80%... ughh lol
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
Oh yeah, sorry. I did get it. Took a little longer than expected, seeing how they processed AND shipped the same day I ordered.

Still, it fits perfectly. Actually, mine seems to fit better than the original and I can tell a huge difference in the overall life. On the first charge I was able to go nearly two days before having to charge it at %4! While I didn't use it as much as previously during that time frame, it was still very impressive - I hadn't been able to go that long since the first week of owning this back in 2011 on GB.

I'll upload a screenshot of where I am right now, but I can tell you there's noticeable difference for me over the original two year-old OEM. This was a great find at the price, so thank you again!

Edit for picture.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Sweet. What I don't get is how you can buy knock off batteries for everything from these phones, to laptops (win based), and whatever else and they work no problem. Yet you buy an knock off battery for any Apple product it's f'd and never works right, need a new battery for my Macbook Pro and nothing but complains and issues with replacements unless straight from rape you in the butt $$$ Apple, people that did the same for the iPhone, Pods etc themselves same issues. Fricken Apple lol
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
One more picture, about to charge now. Again, while some may not think these stats aren't that big of a deal, it's a HUGE improvement from the old stock battery!

Sent from the i777
[AT&T Samsung Galaxy S II SGH-I777] devoidx:
meh..hasn't been my experience, its been off the charger for an hour and i'm already down to 93% ...probably sent 5 texts in the past 1 hour and that's about it

---------- Post added at 02:34 PM ---------- Previous post was at 02:16 PM ----------

paid an online bill and im down to 89% lol...
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
Really? Sorry to hear that; it's not going to get you 2+ days of usage but I've not had that bad a drop off. Could be your kernel. May I suggest AJK with one of the built-in profiles? That's what I'm on and have found the battery lasts about what the original one did the first day I had this phone.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
I can say mines been awesome. Calls, text, just over 2 hours on screen time, nav gps for about 30 min, downloading etc.. and still had plenty left at end of day, over 20%, stock battery couldn't do that w/o dying last few months and not even two years old. Would of posted a shot but plugged it in and threw stats off. Stand by seems to be the norm for me on sho3, about 1% ever hour and half (wifi set to only stay on in sleep when plugged in, makes a big difference with Androids wonky wifi searching).

So far love this thing, can't beat it for 5 bucks. I've been browsing for like 50 min and phones been off the charger for 1 hour 57 min and only dropped 13% and that was with two tabs sometimes.

Sounds like you have more of a kernal/rom/app issue, something is draining to cause that difference with only a few text.
[AT&T Samsung Galaxy S II SGH-I777] devoidx:
Yeah,problem is around the same time that i changed the battery i also switched to straight talk (from ATT) and I feel like its constantly searching for a better signal and also around the same time i updated to latest version of Task's ROM...hard to tell whats the problem source lol

mind telling me what profile do you use with AJK? thanks
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
The ST observation is interesting; I've never paid any attention to that, so I can't say if I had the same thing with AT&T. Anyway, I mainly use either Battery or Topiratiko's profile, mostly because Im too lazy to create my own and they've worked great for me.

Both of the screen shots I uploaded earlier were on Topiratiko's, which is a pretty powerful profile for our phones. Both he and AJ have done a great job tweaking it, and lately it's all I've been using.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Seems to be getting better and better as I use it more, guess breaking it in and charge cycles. I'm very impressed for $5, is it actually 2200mah, not sure, I thought when you got to 2000+ the batteries were larger and wouldn't fit from what others said and from what I saw first hand, and if you compare the stock and this one it's slightly different and is a tighter fit. Maybe it's like 1800-2000... who knows lol. Either way it seems slightly better then the stock battery for me so far and seems to be getting better as we go. I only run Shostock3. I calibrated it.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
I noticed one thing, with this battery it doesn't seem to play well with my dock. But then again I think the dock I have now is "faulty" vs the same one I had before that had no issues. So not sure if it's the battery or dock, but its extremely slow to charge, and if using Nav, or streaming music etc, it won't maintain a charge (whereas my old dock, which was the same as the one I have now, I could be doing internet, streaming music, nav, text etc and maintain 100% through a trip). I'll have to see with a car charger, as I do think this dock is messed up.

edit - yeh must be the dock, I just had it plugged into my computer and it charged like normal on usb.
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Ok more I've used this battery, here's the deal, it works great for normal use. However Whether car dock, car charger, or usb charger, or even the wall charger... it won't continue to charge (let alone hold the charge) like the stock battery does. Talked to a few other owners of this battery and samething. Not sure what causes that. My car dock is screwy right now but the same one I had before the stock battery would charge up to 100% or maintain 100% if plugged in like that even if running GPS/Nav, streaming music, and getting text or emails etc. Same for the car charger or wall charger. The 2000mah battery even if plugged in to my wall charger and browsing will discharge, but a bit more slowly then if not plugged in.

So if your going on long trips or anything and really needing Nav or just a heavy user of your phone plugged in, your best off buying a real Samsung replacement. Otherwise for just normal use it kicks ass for 4 bucks.
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
That's weird, because I've left it charging over night and it gets all the way to %100 and maintains it, exactly like the original. I agree with yurkinator that this is in no way a true 2200, but to me it's operating exactly like my old battery did on day one.

Maybe I just got a lucky battery!
[AT&T Samsung Galaxy S II SGH-I777] surf1:
No it charges to 100% if you leave it, no problem there. What I was saying was if it's charging like on the car charger and your using Nav, or even if hooked to the wall charger and like browsing or whatever, the charge will drop while in use. With the stock Samsung battery it would maintain 100% or if it was used and I plugged it into the car it would charge back to 100% even with Nav running, streaming music, emails etc.

Think I made a mistake in my op, I meant while the phone was in use. It'll charge on my dock or car charger. But even if I stream music, it'll drain almost as if not plugged in, just not as quick as it would if the phone wasn't hooked up.
[AT&T Samsung Galaxy S II SGH-I777] SteveMurphy:
Oh, Ok, I get it now :screwy:.

I'll test mine out tomorrow and see if the same thing happens, because I've not tried that yet.

Sent from the i777
[AT&T Samsung Galaxy S II SGH-I777] surf1:
Seems to be the screen, I just streamed music earlier with screen off and it slowly was charging (not as fast as the stock battery in the dock), but with it on it seems it draws more current from the battery then it's grabbing from the charging cord whether wall or car. The other night I was browsing and it was dropping % while plugged into the wall. So for whatever reason the battery can't make up for the draw being placed on it with like Nav etc in use and screen on even if plugged in. Odd... not sure what would cause that. The stock battery had no problem charging to 100% or maintaining 100% in the dock or car charger even if using Nav, streaming etc

But yeh besides that, if using like normal through the day, browsing, calls, gps, text whatever... it seems to last as long as the stock battery if not longer. When I'm browsing I can go about 20% per hour which gives me at least 4 hours on screen time and still plenty left, which was the best I got with this rom tweaked on ajk and battery profiles back when. I just keep it as is with whatever jeboo kernal is set at. So I still think the battery is an awesome replacement for the $
[AT&T Samsung Galaxy S II SGH-I777] DeepSleep85:
I spent the $5 to get this battery to see if it was an improvement to my stock. I used it for about a week and decided that I was getting better performance our of my stock battery. Granted my stock battery is just under 1 year old and still gives me around 4hrs screen time with Slim Bean and AJK.

Not bad as a back-up though.