Develop Bugs

3500mAh Extended Battery Result

I bought a "3500mAh EXTENDED BATTERY+DOOR Fr SAMSUNG Captivate I897" from E-bay. So far, so good. I recommend it to anyone who wants a great boost in battery life. Plus it's less than $10. I am running FASTY II 2.0. I's say medium usage, mostly texting, and checking email, and Facebook.
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Behind the times
Shoot! And I thought I had the latest and greatest with my excellent 3300 mAh Seidio Extended Battery. Now it doesn't feel so excellent anymore.

I just bought one cause the low price, thanks for showing us this.

You're welcome
Sent from my SAMSUNG-SGH-I897 using XDA App

beast534 said:
I bought a "3500mAh EXTENDED BATTERY+DOOR Fr SAMSUNG Captivate I897" from E-bay. So far, so good. I recommend it to anyone who wants a great boost in battery life. Plus it's less than $10. I am running FASTY II 2.0. I's say medium usage, mostly texting, and checking email, and Facebook.
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Click to expand...
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can i get a link

Display time???
& voice calls time??

Just curious...is the an installulous like app for the android
Sent from my Nexus S using XDA Premium App

pwnerman said:
can i get a link
Click to expand...
Click to collapse
Just search "3500mAh EXTENDED BATTERY+DOOR Fr SAMSUNG Captivate I897" on E-bay and you'll find it.
---------- Post added at 08:40 AM ---------- Previous post was at 08:36 AM ----------
hafirangi said:
Display time???
& voice calls time??
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My display at the time was probably around 3-4 hrs. Voice calls was <1hr.
ukiani said:
Just curious...is the an installulous like app for the android
Sent from my Nexus S using XDA Premium App
Click to expand...
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No, it's just a menu option to view battery usage.

I can vouch for this battery, it freakin rocks! & It's a few bucks cheaper now, I got it at $15 shipped a while back.
I was on Fasty 2.3 when I tested the battery, medium usage overall...heavy texting though.
Edit: Hmmmm....now that I see that picture, I wonder why my phone didn't include stats for my WiFi or calls or stuff like that. Weird.

Not to be a Debbie-Downer, but out of four of these that I have received, only one seems to put out more juice that the OEM batt. That being said, I love the one that works!
I ordered a pair of these from ebay. One wouldn't hold a charge for more than a few minutes. I contacted the seller and told them that one of the batteries was bad. They ended up sending two more as a replacement. Out of the four, one is great (I would guess maybe 2500 mAh?), one is around the same as the OEM battery, one I get constant reboots with, and the one that doesn't hold a charge.
I love my one that works. It was well worth it for the price, but clearly there are some quality issues going on.

thinking about getting one of these if I go on a larger trip. I allready have a spare 1650mAh Battery though.

Mongostylor said:
thinking about getting one of these if I go on a larger trip. I allready have a spare 1650mAh Battery though.
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It's just good to know I can use my phone heavily and not run out of battery before the day's end. Of course if you're playing graphic intense games then that will never be possible.

I might check this out. Ever since I got on the 2.3.4 gingerbread roms and running Dark Core/Talon my battery life has gone to crap.
Sent from my SGH-I897 using XDA App

I received my bad boy today. I cut my rubber case so it protrudes out, and I honestly don't mind it. It makes holding the phone somewhat nicer, than a flat brick. I charged it for only 2 hours, but now i'm letting it go for 8. Then i'll wipe stats and whatnot. But it's pretty damned nice so far. When I received it, it was at 45%, and it took atleast two hours of 3d games to bring it to 25%. I'm really amazed this was $10, and I paid for faster shipping ($5).
It seems really worth the price, and I would like to thank the poster again for mentioning this.

goat_sea said:
I received my bad boy today. I cut my rubber case so it protrudes out, and I honestly don't mind it. It makes holding the phone somewhat nicer, than a flat brick. I charged it for only 2 hours, but now i'm letting it go for 8. Then i'll wipe stats and whatnot. But it's pretty damned nice so far. When I received it, it was at 45%, and it took atleast two hours of 3d games to bring it to 25%. I'm really amazed this was $10, and I paid for faster shipping ($5).
It seems really worth the price, and I would like to thank the poster again for mentioning this.
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You're very welcome. I'm glad you are having good results also. I've been using this for about a week now, still getting great performance.

I can attest to this battery as well. It just wont die. I have had it for the last 3 days, and each charge cycle that I give it brings more time to the battery. I went from being at 32% after a full day on the stock battery with moderate usage, to 60% with this battery today on heavy to almost excessive use. I'm talking, videos on youtube, Downloading apps, texting, calling, music ect. All of this is on Fasty II 2.1 and its just incredible to see my phone go for so long now.

Just ordered mine But going to use latest Stable of Miui

I can also attest to the excellant performance of this battery. I just got mine last night. First thing I did was charge it with the phone off to 100%. I played 3d games for about 30 minutes, watched a 2 hour movie, about 30 minutes of internet browsing, used gps for 30 minutes on my way to work this morning, and have been listening to pandora for the pass 2 hours and I'm at 52%!!! My previous battery would have been DEAD by now. For 15 bucks this battery is a no brainer! I'm sure as others have posted that the battery life will only improve once I calibrate it and charge it a few more times.
Thanks to the OP.

I can get over a day on the stock battery!
Sent from my SAMSUNG-SGH-I897 using xda premium

You may be able to get over a day, but what do you do with your phone? Do you use any programs like Juice Defender? Are you a power user? Way all do you do that makes your stock battery last for over a day?
Sent from my SAMSUNG-SGH-I897 using XDA App

Razr to Nexus.

I'm getting my nexus Wednesday from Verizon. I'm on my 5th razr from 2-10-12, and they offered me a replacement device, wanted the maxx but they couldn't do it for some reason, so I'm getting the nexus. So what should I expect? Battery life, roms kernels, just the run down? Thanks for your time, and hopefully this is an upgrade! I mean i paid $200 for this razr, and they're giving me a nexus which is $300.

skater95 said:
I'm getting my nexus Wednesday from Verizon. I'm on my 5th razr from 2-10-12, and they offered me a replacement device, wanted the maxx but they couldn't do it for some reason, so I'm getting the nexus. So what should I expect? Battery life, roms kernels, just the run down? Thanks for your time, and hopefully this is an upgrade! I mean i paid $200 for this razr, and they're giving me a nexus which is $300.
Click to expand...
Click to collapse
With Franco kernel good battery for a 4g phone ability to unlock boot loader and have freedom priceless roms , there are plenty to try and sample
Sent from my Galaxy Nexus using Tapatalk

I'm running AOKP Milestone 4 with franco.Kernel Milestone 2... good combo according to a lot of people. Battery life you can expect to last around 3.5 hours screen on time if you have hotplug mod enabled with fraco.Kernel. I would say that the best thing about having a Nexus is the abundant updates from Google as well as the ease of modding the phone and the associated vibrant development community.

Word of advice... at the very least get your 2100 extended Verizon battery+ door. If you want to go over 4 hours on screen time get the seidio 3500mah battery with nfc. Its not pretty but you won't notice when you hold the phone. Other than that, put aokp or whatever rom and flash Franco or trinity to get your battery life up over stock. Kernel seems to have much more to do with battery life than rom but aokp seems to have the best mix of customization right now. I love trinity Kernels for battery life and the best stock color enhancement. Nice cool whites without having to mess with anything, but others swear by other kernels as well. Good luck to you!
Sent from my Galaxy Nexus using xda premium

Jayrod1980 said:
Word of advice... at the very least get your 2100 extended Verizon battery+ door. If you want to go over 4 hours on screen time get the seidio 3500mah battery with nfc. Its not pretty but you won't notice when you hold the phone. Other than that, put aokp or whatever rom and flash Franco or trinity to get your battery life up over stock. Kernel seems to have much more to do with battery life than rom but aokp seems to have the best mix of customization right now. I love trinity Kernels for battery life and the best stock color enhancement. Nice cool whites without having to mess with anything, but others swear by other kernels as well. Good luck to you!
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
Thanks for the options, and opinions guys! And honestly, I'm not going to get an extended life battery, one it makes the phone huge and two, I'm only 16 and can't afford one right now (paid for my razr though) but I'll mes around with the roms if I don't get what I want outta my battery. I'm only getting 4-6 hours outta my razr light use. So hopefully it'll do better, as long as I get 10-12 hours, I'll be more then happy! But it'll take time I'm sure.

skater95 said:
Thanks for the options, and opinions guys! And honestly, I'm not going to get an extended life battery, one it makes the phone huge and two, I'm only 16 and can't afford one right now (paid for my razr though) but I'll mes around with the roms if I don't get what I want outta my battery. I'm only getting 4-6 hours outta my razr light use. So hopefully it'll do better, as long as I get 10-12 hours, I'll be more then happy! But it'll take time I'm sure.
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I wouldn't recommend a huge 3500mAh extended. Its ugly and is a bit overkill, considering it seems your expectations are in check. I would recommend just getting the 2100mAh extended. Adds a little life and its not very expensive ($25 I believe).

martonikaj said:
I wouldn't recommend a huge 3500mAh extended. Its ugly and is a bit overkill, considering it seems your expectations are in check. I would recommend just getting the 2100mAh extended. Adds a little life and its not very expensive ($25 I believe).
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Does this have another battery door or stock one? And if it does have to have a new door, would it be possible to show me pics of the differences in the thickness?

skater95 said:
Does this have another battery door or stock one? And if it does have to have a new door, would it be possible to show me pics of the differences in the thickness?
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http://www.youtube.com/watch?v=_EtCQH2eZYI

Install cm9 with franco kernel and turn off LTE. Battery will be much better
Sent from my Galaxy Nexus using xda premium

skater95 said:
Does this have another battery door or stock one? And if it does have to have a new door, would it be possible to show me pics of the differences in the thickness?
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Click to collapse
Yes it has a new door with it. Its about 1mm thicker than stock.

I got 8 hours of moderate use today with LTE on.
Gummy 9.7 Testbuild and Lean Kernel 3.1

The best kernel for screen on time is the latest trinity FW3
6h screen on time over wifi. The best kernel for the Galaxy Nexus.
http://www.derkernel.com/NP-test/any1344-404-345-FW3.zip
Sent from my Galaxy Nexus using XDA Premium HD app

Coming from a RAZR to a GNEX is a great move. You'll definitely be happy with the upgrade. The GNEX with the right ROM/Kernel combo is hands down the best device currently on the market. I grabbed the GSM version in Jan. and couldn't be happier. My only gripe is how fast the tier one devices depreciate. But hey that's the game these days. My goto setup is GummyNex ROMS & Franco Kernels. Blazing fast, buttery, silky smooth. Sick quadrant scores & decent battery life. You've made a great move The extended battery add no bulk whatsoever and is a good pickup
Sent from my i9250 [GSM) Galaxy Nexus

As far as battery life goes, while running Liquid rom with Franco Milestone 2 kernel I get excellent battery life, even with wifi and 4g. I can easily put over a day on the phone some days when I don't use it that much. But even under heavy usage I can get through the day (standard battery).
The size of the phones screen itself is really nice. I came from an Incredible 2 and I thought 4" was the sweet spot. Let me tell you now though that after a few months using this I wouldnt mind the screen being 4.8" or so. The design, in my opinion, makes it the best looking phone on the market.

Samsung OEM 2000mah extended battery

Hey y'all,
new here to the gnex forums from nexus s and I just wanted to share with y'all my experience with this battery.
Well, I'm on my third deep cycle to initially condition the battery and I gotta tell ya...
IT RULES.
I bought the battery after reading some reviews giving it decent feedback. It's on ebay from a company seller called "ShimShop".
It arrived in just about a week and I'm very satisfied.
The battery and extended door make the phone feel slightly heavier and more solid in your hand, It fits in both commuter and defender series otterboxs, but I suggest commuter.
I've been throuroghly impressed today as the battery has only drained 10% in 7 hours with 30 minutes of screen time. All my sync settings are enabed, running stock aosp 4.1.2 alongside franco's m6 kernel with his optimized settings.
I encourage EVERYONE to buy this battery. The stock gave me decent battery life, but this one seems much better thus far.
:cyclops:

alexdemonumber3 said:
Hey y'all,
new here to the gnex forums from nexus s and I just wanted to share with y'all my experience with this battery.
Well, I'm on my third deep cycle to initially condition the battery and I gotta tell ya...
IT RULES.
I bought the battery after reading some reviews giving it decent feedback. It's on ebay from a company seller called "ShimShop".
It arrived in just about a week and I'm very satisfied.
The battery and extended door make the phone feel slightly heavier and more solid in your hand, It fits in both commuter and defender series otterboxs, but I suggest commuter.
I've been throuroghly impressed today as the battery has only drained 10% in 7 hours with 30 minutes of screen time. All my sync settings are enabed, running stock aosp 4.1.2 alongside franco's m6 kernel with his optimized settings.
I encourage EVERYONE to buy this battery. The stock gave me decent battery life, but this one seems much better thus far.
:cyclops:
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Click to collapse
Thanks for letting us know!
Also, how much better is it compared to the stock 1750mAh Battery?

tuk1maar said:
Thanks for letting us know!
Also, how much better is it compared to the stock 1750mAh Battery?
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Click to collapse
It'll buy you a few extra hours (unless your a big gamer, then you have to measure the gain in minutes). It's worth it to get through a workday with commuting included.
Sent from my Galaxy Nexus using xda premium

There's already a thread about it which is a couple of pages long.

It seems much stronger than the 1750mah, even though its only a difference of 250mah. It literally lasted me 48 hours with 4 hours of screen time, It's taking me forever to get through the initial deep drain cycles lol

alexdemonumber3 said:
It seems much stronger than the 1750mah, even though its only a difference of 250mah. It literally lasted me 48 hours with 4 hours of screen time, It's taking me forever to get through the initial deep drain cycles lol
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Click to collapse
Same here, I can get almost 4 hours on 2 days of battery. I do disable location tracking though and only turn it on when needed.
Keep in mind guys, that you're coming from a well used 1750 to a brand new 2000 so the difference will feel much greater.

Hey, I just bought one from the same seller. Won't be here for at least a week though. Thanks for the recommendation!
Sent from my Galaxy Nexus using xda premium

http://forum.xda-developers.com/showthread.php?t=1590663

alexdemonumber3 said:
It seems much stronger than the 1750mah, even though its only a difference of 250mah. It literally lasted me 48 hours with 4 hours of screen time, It's taking me forever to get through the initial deep drain cycles lol
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Click to collapse
You don't need to do any conditioning of modern batteries, just use it. I've been using the extended battery in my new GNex and it's going on forever from my normal charging habits

My Review after 6 months of the 3800mah extended battery with cover

In the beginning it gave me around 2-2.5 days worth of battery per charge which was fantastic. The extended battery weighed about 3x the stock battery for outputting almost 2x. I liked the fact that it lifted the phone up so it wouldn't damage the camera lense (since the lense does stick out past the back cover). It was the same plastic as the rest of the phone so it made the phone look stock.
But after about 5 months, the battery capacity greatly decreased to the point where I was getting about 7 hours until I received the 20% battery warning. This battery was preforming worst than the stock battery.
So in the end I went back to the stock battery. What was everyone else's experience with these extended batteries?

Thanks. I was just shopping for an extended battery this morning. My stock battery is still doing okay after 14 months, but I wanted something to counter the effect ICS has had. I saw Seido's on sale at Newegg and was about to pull the trigger, I'll hold off until I hear more.

you might as well give it a try. I bought mine for around 10usd

AssMilk said:
you might as well give it a try. I bought mine for around 10usd
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Would you mind indicating exactly which 3800mAh battery you are reviewing?
Cell phone batteries and memory cards both suffer from a large amount of poor-product masquerading as quality. Reviews of this type of product are not actually helpful unless they identify the specific product, brand, and even seller.
I wouldn't be surprised in the slightest if I purchased an extended battery for $10 and it started to go bad after 5-6 months. As comparison, my stock battery went bad after about 13 months. While paying more doesn't guarantee that you'll get something great, it is generally true in my experience that you get what you pay for.

http://www.tvc-mall.com/details/Sam...th-Battery-Cover-3800mAh-BATY-EpicTouch4G-01/

Assmilk......lol
Didnt get it till I watched chappelle show
I ordered the qcell I had the Trexcell which started to go from 10hrs screen on time (wifi) (5-7 3g/4g) to back to stock oem. You should try that one I read nothing but good reviews on it

Kn0wBuddy said:
Would you mind indicating exactly which 3800mAh battery you are reviewing?
Cell phone batteries and memory cards both suffer from a large amount of poor-product masquerading as quality. Reviews of this type of product are not actually helpful unless they identify the specific product, brand, and even seller.
I wouldn't be surprised in the slightest if I purchased an extended battery for $10 and it started to go bad after 5-6 months. As comparison, my stock battery went bad after about 13 months. While paying more doesn't guarantee that you'll get something great, it is generally true in my experience that you get what you pay for.
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This is good to know. Thanks.

I bought the trexell 3800 mah battery from amazon. Its flat out amazing. I get 2.5-3 hours of screen on time on stock. With this I get 6+ . Worth every penny!! It always last all day even playing games all day!
http://www.amazon.com/Trexcell-Sams...8957470&sr=8-6&keywords=epic+4g+touch+battery
Sent from my SPH-D710 using Tapatalk 2

I was gonna try the Trex or QCell batteries but held back after reading many so-so and bad reviews. Instead I decided to give the one made by Gorilla Gadgets a shot. I'll be receiving mine this week. I'll post up a review after I've had it for a few days. Hope it's awesome~!

Gorilla gadgets extended battery works really good. Had it on HTC evo, evo shift for my 12 yrs old son. On my ET4G too. No complaints at all.
Sent from my SPH-D710 using xda premium

altamonte32 said:
Gorilla gadgets extended battery works really good. Had it on HTC evo, evo shift for my 12 yrs old son. On my ET4G too. No complaints at all.
Sent from my SPH-D710 using xda premium
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Click to collapse
I hope you're right. I just got mine today and I'm using it right now after it hit 100% charge. I hope this didn't turn out to be a waste of money. How long did the Gorilla batteries last for you on average? (not phone battery life but the actual battery itself life)?

You gotta follow this video how maximize the use of your extended battery.
https://www.youtube.com/watch?v=An4LjtOqLdA&feature=youtube_gdata_player
Sent from my SPH-D710 using xda premium

If you guys need a case for your ET4G wih extended battery check the link below.
http://www.amazon.com/gp/aw/d/B006X1FZXC
Sent from my SPH-D710 using xda premium

my trexcell took a dump awhile back, now my stock battery is doing the same that did (say its charged then freezes and reboots to an empty battery) i just bought 2 cheap extended 3800s on ebay with a battery charger and extended backs for 17bux, will see how these fare in comparison.

I've seen a 4100mah battery on Amazon for about $30
Sent from my SPH-D710 using xda premium

Jared King said:
I've seen a 4100mah battery on Amazon for about $30
Sent from my SPH-D710 using xda premium
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Click to collapse
It's the Qcell, and it's amazing so far
sent from my ET4G on Paranoid Android using XDA Premium HD in hybrid mode

I have the Trexcell battery and it sucks. It drains so fast that it feels as if I have the OEM battery in the phone.

Prey521 said:
I have the Trexcell battery and it sucks. It drains so fast that it feels as if I have the OEM battery in the phone.
Click to expand...
Click to collapse
The Hyperion I got is like that too, I'm sticking with only Qcell for now
Sent from my SPH-D710 using Xparent Skyblue Tapatalk 2

Yeah, after three trexcells, two that need to be thrown out because of bulging, I just got a qcell 4100. I know the number means nothing. It said to do 6 full charge and discharge cycles in the beginning, and let the first one charge for nine hours. I'm on my second charge so far. Don't know if it's true but I read somewhere to charge with the phone off. The first charge ran reaaaly long before dying. Don't know if it was bad batteries or bad external chargers, but both my Samsung externals would only charge the trexcells to 95%, even if it was a 12+ hour charge.

Here I am about 4-5 months in on my 3800 batteries. 1 trexcell and 2 generic. Far as comparing to stock? Stock batteries make me sick now. They drain so much faster. The big ones amaze me how long they last. I do rotate the stockers in so they dont sit and go bad. So ill have a few days of extended then stock then extended ect. The performace of extended is so good I now see the big lump as sexy! I did find a great use for my stockers. (have 4) I was in my best friends wedding the other day and with no case and slim battery the phone slid in tux pocket easy lol. +1 but half way through reception I had to drunken walk way out to car and get spare -1. Right now as I set im about to hit 2 days on Trexcell on the newest Jellyverse sitting at 37% +20.

[Q] Buying new extended battery

I'm thinking of buying a bigger battery for my GNex for better battery life.
I found a normal sized one of 2450MAh (http://dx.com/p/replacement-3-7v-2450mah-li-ion-battery-for-samsung-galaxy-nexus-i9250-golden-215299)
and one that is 3800MAh (http://dx.com/p/replacement-3-7v-38...e-for-samsung-galaxy-nexus-prime-i9250-127595) but heavier, and bigger is size such that it needs a different cover (that comes with it).
What are you guy's thoughts on it? Forget the price, is the extra weight and bulkier phone worth the 3800MAh? Or should I go for 2450MAh? Perhaps I should just stick to the stock battery that came with it? Please give your opinions and reason why.
Cheers

I think you should stick with stock. If you play around a bit you van get a full day out of the battery. That's pretty decent for a smartphone. With the stock battery your phone stays slim and light. If you do want a extended battery I should go with the 2450 mah. Than you have a good balance between battery life and weight. 3800 mah seems too over the top to me.
Sent from my Galaxy Nexus using XDA Premium HD app

mrgnex said:
I think you should stick with stock. If you play around a bit you van get a full day out of the battery. That's pretty decent for a smartphone. With the stock battery your phone stays slim and light. If you do want a extended battery I should go with the 2450 mah. Than you have a good balance between battery life and weight. 3800 mah seems too over the top to me.
Sent from my Galaxy Nexus using XDA Premium HD app
Click to expand...
Click to collapse
Are we talking GSM or LTE here? Because that's a dream come true to have a full days use on the LTE variant with stock battery. I need to charge this bastard 3+ times a day on moderate to heavy use.
Sent from my Galaxy Nexus using Tapatalk 2

Dont buy those "golden batteries" , they can harm ur device, better go with orignal 2100 mah from samsung
Sent from my Galaxy Nexus using xda app-developers app

Also these golden batteries probably don't support NFC.
Sent from my Galaxy Nexus using Tapatalk 4 Beta

I'm not content with my 1750 mAh battery, so I ordered a 3800 mAh extended battery. It will probably degrade after half a year if not earlier. But heck it was only €13 and thats like nothing for 6 months. The looks are horrible (from what I've seen on the internet), but I'll get used to it.

razi914 said:
Dont buy those "golden batteries" , they can harm ur device, better go with orignal 2100 mah from samsung
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
Can harm, or will harm (confirmed)? And how is it that it can harm the phone? By delivering more than the mentioned voltage?
Oh, thanks. I just started looking into these batteries; didn't realize there is an official extended battery.
Oh, and I don't care about NFC, I never use it anyway. Heck, I don't even know how to use it haha.
Rapydax said:
I'm not content with my 1750 mAh battery, so I ordered a 3800 mAh extended battery. It will probably degrade after half a year if not earlier. But heck it was only €13 and thats like nothing for 6 months. The looks are horrible (from what I've seen on the internet), but I'll get used to it.
Click to expand...
Click to collapse
I guess €13 is cheap spread over 6 months, but there that's not all there is to it right? The 3800 needs a different cover, so no more casing will fit on the phone isn't it? There is the hassle of having to order a battery from overseas every 6 months, and not to forget, the phone will become bulkier, heavier and uglier :/
If the 3800 battery degrades that fast (is this confirmed?), does the 2450 too?
DroidOnRoids said:
Are we talking GSM or LTE here? Because that's a dream come true to have a full days use on the LTE variant with stock battery. I need to charge this bastard 3+ times a day on moderate to heavy use.
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
I can only last a day with stock battery with light use (GSM version). Otherwise I also have to charge it 2/3 times a day with heavy use. That's why I'm looking into these batteries.

A noob question. Does "extended battery" always mean you need a different back cover because of it's increased thickness? I know it's the case for the 3800, but also for the 2450???

Djalaal said:
A noob question. Does "extended battery" always mean you need a different back cover because of it's increased thickness? I know it's the case for the 3800, but also for the 2450???
Click to expand...
Click to collapse
well the 3800 is thicker than 2450 so it will need a bigger case

I once got 6hrs of screen-on time with a Seidio 3800MaH battery. I kid you not.
Sent from my Galaxy Nexus using xda premium

6 hours screen-on from 3800? With what connectivity settings turned on?
I kind of found the answers to my own questions. 2450 needs a new cover too, because it is slightly thicker than the stock battery. Every battery that has a different thickness need a special cover for it.
With different size covers, you need different casing too. While I found nice casings for 3700-3900 type covers, and quite nice casings for 2000-2500 type covers, I've seen almost nothing but complains about the batteries themselves. Not deliveries the promised MAh (from the start) or performance degrading very fast are very common complains. Some even talk of overheating, and ofcourse many don't support NFC (which I don't use).
I can't trust the battery will do what it says it will do anymore :/ I'll stick with the stock OEM battery. I'm now considering buying a power bank/portable battery charger. In a way it also gives me longer battery life - when I want/need it. Plus side is also that others can make use of it too.
Oh, and just for the hell of it. Check out this monster extended battery people: http://www.amazon.com/ZeroLemon-Ext...=1-1&keywords=samsung+galaxy+nexus+zero+lemon It's the only extended battery I've found so far that I consider buying. Very good (and many) reviews too. *EDIT* It's only for the LTE Nexus, not GSM... */EDIT* But it's price is a little high for me...

It was quite impressive actually.
I had the used the phone particularly heavily that day, and suffice to say, I was quite.. Well, impressed.
Sent from my Galaxy Nexus using xda premium

Appearantly not all Nexus batteries are the same? I'm using the GSM Nexus. Tell me if I understand this correctly, but CDMA Nexus is from Verizon, and LTE Nexus is from Sprint, and both are not GSM devices, meaning their battery (LxW dimensions) are not the same? How about these Nexus from T-mobile? Are they GSM?

Meh for me the bulky back of the phone doesn't matter. It's not like you're looking at it all the time.

Rapydax said:
Meh for me the bulky back of the phone doesn't matter. It's not like you're looking at it all the time.
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I don't care much about the look either, but the weight, size, and especially difficulty in finding a good case for it, I do care about.
And external battery (power bank) is cheaper for the amount of MAh you get, gets to much higher amount of MAh (10000MAh is quite common), can charge any devices (that need 1A or 2A input to charge) and mutiple devices simultaneously (unless you got a real cheap one). So for me I'm sticking with the power bank. A cheap one like this one can already completely charge your nexus from 0: http://dx.com/p/swpkpower-a22620-rechargeable-2600mah-mobile-power-bank-w-aroma-white-228492