You probably get what you pay for, but here's the link anyway:
http://www.amazon.com/T-Mobile-MyTo...OJLK/ref=sr_1_9?ie=UTF8&qid=1338128802&sr=8-9
Anyone want to give this a shot?
jonnycat26 said:
You probably get what you pay for, but here's the link anyway:
http://www.amazon.com/T-Mobile-MyTo...OJLK/ref=sr_1_9?ie=UTF8&qid=1338128802&sr=8-9
Anyone want to give this a shot?
Click to expand...
Click to collapse
This doesn't seem like a run of the mill chinese cheap battery. Packaging looks very professional and the company itself has amazing ratings. I would say this is a pretty safe buy. Its a company that designs the batteries in canada.
And with amazon you're well proctected. Ebay tends to always back the buyer up as well, but I always felt amazon was more legit. I have no need to ugly up my phone with a massive battery, nor do I need the extended time (stock battery suits me fine) but for someone that can't shell out a lot of money this seems like a solid deal
gtmaster303 said:
And with amazon you're well proctected.
Click to expand...
Click to collapse
Yes and no. I bought a Mugen from amazon, and everything went fine. It died after about 3.5 months, and Mugen wouldn't replace it because I didn't buy direct from them.
So, most reputable companies who sell direct on amazon are OK. Mugen doesn't sell direct, so avoid them on amazon.
I'd like to see how badly this battery bulges out the phone. I've seen pictures of the galaxy note with this battery, and it looks... big.
I'm willing to test it out. I placed the order and I'll report back once I get it.
---------- Post added at 11:11 AM ---------- Previous post was at 11:10 AM ----------
jonnycat26 said:
Yes and no. I bought a Mugen from amazon, and everything went fine. It died after about 3.5 months, and Mugen wouldn't replace it because I didn't buy direct from them.
So, most reputable companies who sell direct on amazon are OK. Mugen doesn't sell direct, so avoid them on amazon.
I'd like to see how badly this battery bulges out the phone. I've seen pictures of the galaxy note with this battery, and it looks... big.
Click to expand...
Click to collapse
That's probably the exception. I've never had a bad experience when returning an item through Amazon.
The reviews for the Galaxy S2 battery are pretty good.
And there's tons of S2 users out there. So I highly doubt this company makes crap batteries
http://www.amazon.com/QCell-Samsung-SkyRocket-Extended-Compatible/dp/B006SK5I3K
jonnycat26 said:
You probably get what you pay for, but here's the link anyway:
http://www.amazon.com/T-Mobile-MyTo...OJLK/ref=sr_1_9?ie=UTF8&qid=1338128802&sr=8-9
Anyone want to give this a shot?
Click to expand...
Click to collapse
was really considering getting the mugen 3600mah batt but the 98$ price tag was really stinky, i just might get this
ac3theone said:
was really considering getting the mugen 3600mah batt but the 98$ price tag was really stinky, i just might get this
Click to expand...
Click to collapse
I'm telling you, the Mugen pays for itself. Especially if you have the CM9 Alpha builds.
gtmaster303 said:
This doesn't seem like a run of the mill chinese cheap battery. Packaging looks very professional and the company itself has amazing ratings. I would say this is a pretty safe buy. Its a company that designs the batteries in canada.
And with amazon you're well proctected. Ebay tends to always back the buyer up as well, but I always felt amazon was more legit. I have no need to ugly up my phone with a massive battery, nor do I need the extended time (stock battery suits me fine) but for someone that can't shell out a lot of money this seems like a solid deal
Click to expand...
Click to collapse
Hmm... I don't see any reviews for the product. I'd buy it but the price worries me for how cheap it is. I mean... I like cheap, but... there are no reviews to be found which worries me.
Here is my thing about batteries. Last summer when I was on the hunt for an amazing lipo battery that would make my rc car run the fastest,coolest, longest right. Well them batteries were about 60 bucks, but what I had found through my research was there were only about 4 companies world wide who produce lipo-cells, so why waste 60 bucks when I could get a 2-cell for 12 bucks. Well it only lasted the summer because I wasn't very responable with it but its perfomance was on par with the more expensive batteries and so was temp ect. It don't have to cost the most the be effective, sometimes I feel this blacknightavalon works for mugen, because I promise you people 100 for a phone battery, they seen you coming
Sent from my myTouch_4G_Slide using Tapatalk 2
strapped365 said:
they seen you coming
Click to expand...
Click to collapse
http://www.youtube.com/watch?v=uVvcD4Czx4Y
And yeah, I've no doubt Mugen makes good batteries. But the fact that you *must* buy from them and nowhere else in order to get any sort of service makes them a bit shady.
strapped365 said:
Here is my thing about batteries. Last summer when I was on the hunt for an amazing lipo battery that would make my rc car run the fastest,coolest, longest right. Well them batteries were about 60 bucks, but what I had found through my research was there were only about 4 companies world wide who produce lipo-cells, so why waste 60 bucks when I could get a 2-cell for 12 bucks. Well it only lasted the summer because I wasn't very responable with it but its perfomance was on par with the more expensive batteries and so was temp ect. It don't have to cost the most the be effective, sometimes I feel this blacknightavalon works for mugen, because I promise you people 100 for a phone battery, they seen you coming
Sent from my myTouch_4G_Slide using Tapatalk 2
Click to expand...
Click to collapse
I would never move to f**king China. Not unless they got rid of their Maoist regime. No, I just know a good battery when I'm using one, and I think the Ankers are pretty good too (as long as you order the two-pack with the wall charger).
The battery cover in the Amazon picture is clearly not for a MT4GS, but maybe it's just the stock photo they use for all this company's batteries.
Anyhow, for $20, I took a chance.
The company as a whole seems to make quality batteries, so I doubt they would skimp on our phone. And it is an actual company, not a "no name generic" battery. And as I said before, if you look up batteries for other phones from the same company, they generally have great reviews
Good point on the picture. That battery cover does not seem to fit our phone, which means the picture is a stock picture.
im confused, i googled mugen battery and 2 different links come up. not sure which is the official link.
1-http://www.mugenbattery.com/search.php?search_query=mytouch+4g+slide&x=0&y=0
or
2-http://www.mugen-power-batteries.com/
ac3theone said:
im confused, i googled mugen battery and 2 different links come up. not sure which is the official link.
1-http://www.mugenbattery.com/search.php?search_query=mytouch+4g+slide&x=0&y=0
or
2-http://www.mugen-power-batteries.com/
Click to expand...
Click to collapse
The second link.
Sent from Spaceball One.
blackknightavalon said:
The second link.
Sent from Spaceball One.
Click to expand...
Click to collapse
thanks
Sent from my myTouch_4G_Slide using Tapatalk 2
Just got it in. The pic on Amazon is a file one. This battery and the cover will fit, but it's charging up right now. I'll test it tonight.
Sent from Spaceball One.
blackknightavalon said:
Just got it in. The pic on Amazon is a file one. This battery and the cover will fit, but it's charging up right now. I'll test it tonight.
Click to expand...
Click to collapse
Could you post pictures when you get it all set up?
Personally, I'd go for a slim extended battery if they offered it, otherwise it won't work with the dock. Still, if this works well, for 20 bucks it's a no-brainer.
jonnycat26 said:
Could you post pictures when you get it all set up?
Personally, I'd go for a slim extended battery if they offered it, otherwise it won't work with the dock. Still, if this works well, for 20 bucks it's a no-brainer.
Click to expand...
Click to collapse
It's still on the charger. It came in damn near dead.
Sent from Spaceball One.
I've been looking for a cheap extended battery since I ditched the G2. I had a $15 3500mAh eBay battery on it and it worked just fine. I'll probably order this after I hear what y'all have to say about it.
Related
Does anyone have it? Any comparison pics of the size? Do you guys mind it? How much improvement have you seen?
Mr. WootRoot just bought it.
Pics:
http://www.wootroot.com/blog/
I didnt know theres a 3200. I have the 2800. I doesnt give me twice the battery life of the stock battery
I think is better just buying a second stock battery especially since there are only $25.
They apparntly dont even show the 2800 mAh battery on thier website anymore lol.
Are there any more comparison pics or reviews out there? I am beginning to think I should have just gotten this and not a bunch of standard batteries. Swapping them is a pain, especially with Swype crapping out after every restart.
I bought the 2800 mAh and hated the way it made my phone feel and look. No cover for the camera lens either. I used it for 4 days and went back to my stock battery. My phone obviously lasted longer in between charges, but not enough for me to keep using it.
now 3200mAh
still looks urgly
http://www.seidioonline.com/product-p/bacy32hnx1-bk.htm
why not just carry an extra charged 1400 or 1600?
malicious85 said:
why not just carry an extra charged 1400 or 1600?
Click to expand...
Click to collapse
'cause then you need to turn of the phone, swap the battery, wait for it to boot again.
I'd rather have it all in one.
I've decided to just go with a Iogear GearPower Portable Battery. I think it is more versatile.
that back cover looks like a$$
i know it looks ugly but wootroot said he got 36.5 hours on heavy use! i mean, i use my nexus one HEAVILY and i get about 5.5 hours before needing to charge it. u can get it for $70 on ebay so you save a little money, i have the money (i sold my dock and some stuff for the sole purpose of getting this thing) but now that i have it, i dont know if i wanna buy it. its seems too expensive, but charging this thing 3 times a day is starting to get really annoying. if i do, ill post up some pics.
Use coupon code DFN10 for 10% off your order ($50 or more). I don't know when it expires though, but use it ASAP.
andonnguyen said:
Use coupon code DFN10 for 10% off your order ($50 or more). I don't know when it expires though, but use it ASAP.
Click to expand...
Click to collapse
Thanks dude! I just saved $20.
ayman07 said:
i know it looks ugly but wootroot said he got 36.5 hours on heavy use! i mean, i use my nexus one HEAVILY and i get about 5.5 hours before needing to charge it. u can get it for $70 on ebay so you save a little money, i have the money (i sold my dock and some stuff for the sole purpose of getting this thing) but now that i have it, i dont know if i wanna buy it. its seems too expensive, but charging this thing 3 times a day is starting to get really annoying. if i do, ill post up some pics.
Click to expand...
Click to collapse
man what the hell u b doing..
lightforce said:
that back cover looks like a$$
Click to expand...
Click to collapse
totally ruins the look of the phone
Its hella fugly...reminds me ofthose old motorola flip phones from the late eighties/early nineties.
BlackElvis79 said:
Its hella fugly.
Click to expand...
Click to collapse
That didn't stop me from ordering one. I bought the phone and extended battery for its function, not its looks.
hkfriends said:
now 3200mAh
still looks urgly
http://www.seidioonline.com/product-p/bacy32hnx1-bk.htm
Click to expand...
Click to collapse
It looks like they updated the cover considerably. It's not nearly as fugly.
Are there any places yet to get a reasonably priced spare battery for the G2x/O2x?
Sent from my Nook Color!
I just found this:
http://ioomobile.com/shopbybrand/872-momax-battery-for-lg-optimus-2x-p990-1400mah.html
I assume that an O2x battery would work on the G2x? I've used a Momax battery on my N1 and I get decent life out of it.
expansys us has one for pre order. 39 bucks i think.
here it is http://www.expansys-usa.com/lg-optimus-2x-battery-210068/
i personally wouldn't use anything other than an oem battery.
Good to know. I got two non original batteries for my Nexus One. One was a fake from DinoDirect that looked authentic but barely lasted half what it should have. But the Momax I bought from NCIX is so close to the original in performance that I usually forget which one is actually in there.
Sent from my Nook Color!
I'm interested too. Looking for "Optimus 2X" on eBay had no results.
Mugen's (www.mugen-power-batteries.com) working on a battery. Typically they're more amps than stock in the same form factor. They're more expensive than stock and better quality. They have a great reputation and I buy their batteries whenever I can.
cmstlist said:
I just found this:
http://ioomobile.com/shopbybrand/872-momax-battery-for-lg-optimus-2x-p990-1400mah.html
I assume that an O2x battery would work on the G2x? I've used a Momax battery on my N1 and I get decent life out of it.
Click to expand...
Click to collapse
that may work BUT our G2X is 1500mah so.....
Sent from my LG-P999 using XDA App
rich2thad said:
that may work BUT our G2X is 1500mah so...
Click to expand...
Click to collapse
LOL Exactly what i thought
"Great minds think ..............."
.
What about this?
http://cgi.ebay.com/1500mAh-battery-charger-T-mobile-LG-G2X-Optimus-2X-/190524967506?pt=PDA_Accessories&hash=item2c5c2c4a52
We've got another thread in here, that should probably be merged with this one, but a bunch of us are gonna start bugging Seidio to make a larger capacity battery for these. It seems like brand new, it has the standby and usage time that my year+ old Nexus one does.
ctt0002 said:
What about this?
http://cgi.ebay.com/1500mAh-battery-charger-T-mobile-LG-G2X-Optimus-2X-/190524967506?pt=PDA_Accessories&hash=item2c5c2c4a52
Click to expand...
Click to collapse
i've used that type of battery for my vibrant and i can say that it works pretty darn good.
cmstlist said:
Good to know. I got two non original batteries for my Nexus One. One was a fake from DinoDirect that looked authentic but barely lasted half what it should have. But the Momax I bought from NCIX is so close to the original in performance that I usually forget which one is actually in there.
Sent from my Nook Color!
Click to expand...
Click to collapse
Yep, I've gotten burned by fake batteries from eBay before, so be careful and only buy batteries with positive reviews.
I was a big fan of the Mugen I had in my G2, hopefully there is an 1800 mAh+ battery out in the near future.
Hey guys, is this any good? I was planning on buying this; http://www.amazon.com/Laza-Battery-Fascinate-Captivate-T-mobile/dp/B004AOAV56/ref=pd_bxgy_cps_img_a
Anybody have any luck with extended batteries? If so what is a good brand to get and where from?
I bought a generic 1800mAh battery on the cheap through eBay. It has worked fine for me.
rllebaron said:
I bought a generic 1800mAh battery on the cheap through eBay. It has worked fine for me.
Click to expand...
Click to collapse
Yes, but is it better than stock? I highly doubt it's actually 1800mAh. If it is, then the Chinese have turned into wizards.
I am currently using these. I just started using it, so not sure how different it will be. I will let you know.
The reviews are kind of hit and miss
I seen one on ebay where you remove the battery cover, and it was a case too. with like a 3500ma or so.
But I like my Otterbox to much.
I'm using an Anker 1600mAh from Amazon. It's noticibly better than the stock battery, but it takes a week of overnight charging to get the most out of it.
http://www.amazon.com/Anker-1600mAh...NRRQ/ref=sr_1_1?ie=UTF8&qid=1329521650&sr=8-1
I bought an Anker Slimtalk external battery for mine. Going pretty good so far. I can top up my battery when it goes too low in the evening.
I bought an Anker 1600 mAh and actually performs slightly better than stock battery.. maybe It's the Rom maybe not... Because with ICS I got 23 hours with stock and 18 with Anker..
Sent from my Inspire 4G using XDA App
are the really cheap batteries on ebay any good? How do they compare to the original?
I have a Dynapak(I think that's the name) from Amazon and I notice a difference compared to stock. I think I paid $16 when I bought it for two. I believe it says they're 1600 mAh or 1650. I'm happy with it.
Sent from my SAMSUNG-SGH-I777 using Tapatalk
1frgjh;adfjklgnld;
Practicing good battery conditioning habits will greatly extend the life and performance of any battery.
We were just discussing battery habits HERE Browse through that real quick if youre interested in your battery.
'whispers fade' Search Button, Search Button, Search button, search button
If it fits inside the stock battery compartment then it will never be more than 1230 mah.
surfguitar38 said:
are the really cheap batteries on ebay any good? How do they compare to the original?
Click to expand...
Click to collapse
ive got 3 ( i like having spares of everything lol ) and been using em for about a week now. they seem to work the same as stock. they say their 1800mah but i know they're not.
I have been looking at these;
"ProdiCell-Premium-1600mAH-Extended" on Amazon, I cannot post outside links yet but if anyone knows the name, any reviews?
surfguitar38 said:
are the really cheap batteries on ebay any good? How do they compare to the original?
Click to expand...
Click to collapse
No. Most have been reported as being worse than stock.
Hunt3r.j2 said:
If it fits inside the stock battery compartment then it will never be more than 1230 mah.
Click to expand...
Click to collapse
While there's no way to prove or disprove your statement without bench tests, many people have confirmed that the Anker batteries last longer in an apples to apples test.
I was gonna order the Ankers but no longer in stock
ericpbritt said:
I was gonna order the Ankers but no longer in stock
Click to expand...
Click to collapse
Might just be temporary. Even on ebay the seller laptopmate USA (same authorized seller from amazon) raised the price to $67 to keep people from bidding. But they did not remove the auctions. So they will be back.
Hey goat, still got your Eternity? I use mine as an MP3 player now. Just put a new digitizer on it and its like new.
Never actually had the eternity. I had the impression. And yeah I still got it. I had to replace mine also.
after reading reviews ,looks like i decided to get a mugen 1800mah battery,but the website
http://www.mugen-power-batteries.co...00mah-extended-battery-for-htc-sensation.html
have been out of stock for a few days now, i was wanting to know where did you get yours? i found some on ebay for 42.99
http://www.ebay.com/itm/MUGEN-POWER...ccessories&hash=item2319fa803b#ht_5836wt_1344
and also in amazon http://www.amazon.com/Mugen-Extende...UDJ6/ref=sr_1_1?ie=UTF8&qid=1330918371&sr=8-1
for 46.99 , but Im not sure if these are original mugen batteries or just a imitation, so i was wanting some links or tips on where to buy it
THANKS for the feed backs
If you're going to order a Mugen, buy the 3600mAh battery. It's $100 well-spent.
Delivered via candygram for Mr. Mongo.
i dont want my phone to be any thicker plus I want to keep using my trident case because it protects it a lot at my job. So does mugen 1800 battery last better than stock?
g2uzer said:
i dont want my phone to be any thicker plus I want to keep using my trident case because it protects it a lot at my job. So does mugen 1800 battery last better than stock?
Click to expand...
Click to collapse
It's both better than stock and better than the anker (i have both). I roared mine on amazon, and it was legit.
jonnycat26 said:
It's both better than stock and better than the anker (i have both). I roared mine on amazon, and it was legit.
Click to expand...
Click to collapse
Cool thanks, so is there anyway of really knowing if it's a real mugen or not?
Sent from my myTouch_4G_Slide using XDA
g2uzer said:
Cool thanks, so is there anyway of really knowing if it's a real mugen or not?
Sent from my myTouch_4G_Slide using XDA
Click to expand...
Click to collapse
If you're worried about its legitimacy, order it directly from their website.
blackknightavalon said:
If you're worried about its legitimacy, order it directly from their website.
Click to expand...
Click to collapse
Yea but like I said, they are temporarily out
Sent from my myTouch_4G_Slide using XDA
g2uzer said:
Cool thanks, so is there anyway of really knowing if it's a real mugen or not?
Sent from my myTouch_4G_Slide using XDA
Click to expand...
Click to collapse
Other than ordering it, I don't know. Checking the seller ratings and stuff like that helps determine if a seller is legit.
jonnycat26 said:
Other than ordering it, I don't know. Checking the seller ratings and stuff like that helps determine if a seller is legit.
Click to expand...
Click to collapse
Thanks
Sent from my myTouch_4G_Slide using XDA
mugen seems to be rather pricey. is there any place to get it at cheaper price? amazon seems to be listed in rather high price compare to other brands
ckang008 said:
mugen seems to be rather pricey. is there any place to get it at cheaper price? amazon seems to be listed in rather high price compare to other brands
Click to expand...
Click to collapse
As I keep saying, buy the 3600 if you're going with a Mugen. It's $100 well-spent.
Delivered via candygram for Mr. Mongo.
g2uzer, I had the same problem you did (Mugen being out of the MT4GS 1800 mAh battery when I finally accepted I had a bad pair of Ankers), but I found a workaround.
It turned out Mugen wasn't out of the 1950 mAh battery for the Sensation and I knew that the Ankers I was using also worked in the Sensation, so I took a chance. The fit of the Mugen is *very* tight (noticeably tighter than the Anker which I found a bit tighter than stock). I suspect that's why Mugen isn't selling them for the MT4GS.
Nevertheless it worked and I'm very happy with the results. The several days of 100% to near-zero usage Mugen recommends were painful. If I wasn't consciously heavily using my phone during the day (Bluetooth headset music, Bluetooth tethering my Transformer and plenty of screen on games/browsing time to boot), it would taked a fair bit of "work" (everything going plus max brightness and whatever else I came up with) to get to near-zero before I went to bed.
If you haven't gone in another direction, it is worth trying.
Sent from my myTouch_4G_Slide using xda premium
I'm surprised that this site hasn't been mentioned: www.mugenbattery.com. They're a US-based, authorized distributor of Mugen batteries with free shipping for orders over $50. I plan on purchasing my battery from them when my budget allows.
I'm looking for a replacement battery for my S4. Since it's replacement it doesn't have to be as good. What scares me though is that those cheap ebay/dealextreme batteries might hurt my phone somehow (those golden batteries etc). Is this possible, or is it safe to use those 'fake' batteries?
Also I would love if you guys could recommend a decent replacement battery for a good price (even better with a wall battery charger).
Check out the thread for registering your device with Samsung. You get a 50% off coupon to their store.
Sent from my SGH-M919 using xda app-developers app
mnazary said:
Check out the thread for registering your device with Samsung. You get a 50% off coupon to their store.
Sent from my SGH-M919 using xda app-developers app
Click to expand...
Click to collapse
Sadly I don't think that's possible in my country...
sofar so good
i bought some there (Ebay) was a deal 3 batteries and battery charger for 10 bucks. haven't had any problems yet. going on a week and a half.
Bmxshay92 said:
i bought some there (Ebay) was a deal 3 batteries and battery charger for 10 bucks. haven't had any problems yet. going on a week and a half.
Click to expand...
Click to collapse
Could you share a link please?
Buy a Zerolemon.
blackknightavalon said:
Buy a Zerolemon.
Click to expand...
Click to collapse
I have a problem with the huge ass batteries, I like my phone the way it is, so I'm looking for regular size.
frrlod said:
I have a problem with the huge ass batteries, I like my phone the way it is, so I'm looking for regular size.
Click to expand...
Click to collapse
Suit yourself, but I'm going on 19 hours off of a full charge with my Zerolemon and I still have 55% left.
frrlod said:
I have a problem with the huge ass batteries, I like my phone the way it is, so I'm looking for regular size.
Click to expand...
Click to collapse
ZeroLemon will be doing a regular sized battery as well which is what i'm waiting for. And ZeroLemon are known for their reliability (and actually being 3000 mAh). I wouldn't trust the ebay ones.
i got one of this to test and it was the perfect replacement battery. So just ordered this from amazon expecting delivery right about now...
http://www.amazon.com/gp/product/B00CI8L1NC/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
jax5ter said:
i got one of this to test and it was the perfect replacement battery. So just ordered this from amazon expecting delivery right about now...
http://www.amazon.com/gp/product/B00CI8L1NC/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
Click to expand...
Click to collapse
After some research I came to a conclusion I want that one too. Can you check if it's just the same size as the original battery? As I've seen some Anker batteries which were good but slightly too large.
frrlod said:
After some research I came to a conclusion I want that one too. Can you check if it's just the same size as the original battery? As I've seen some Anker batteries which were good but slightly too large.
Click to expand...
Click to collapse
the one i tested was non nfc, these are nfc enabled but i doubt that would make them that much bigger to bulge, but ill let you know as soon as this UPS man arrives at my office, gotta love amazon prime! :laugh:
I bought the Anker batteries. Get 2 batteries and a wall charger. The wall charger also has a USB port which can output 1A, which it pretty good to carry around if needed. I've read reviews how when these first came out it was a really tight fit, but it seems that they made adjustments because the ones I received fit in just fine, like the OEM ones.
Being that I dont have 10 post I can't post urls this is
Seller name was -valuebuybattery
Title-3X Battery for Samsung Galaxy SIV S4 GT-i9500 with External Charger 3250 mAh
worth it
I almost always buy the cheapo chinese batteries for my phones. Here are my findings:
They will last throughout the day about as long as genuine batteries... for the 1st year
After the 1st year, they will start to degrade.... depending on your use, lack of use, temperature, etc... I have some 2.5 year old chinese epic 4g batteries that still work.. but only last about 4 hours. My original battery will still go a good 12hrs. I only keep them around for emergencies, but I don't really use that phone anymore.
The cheapo chargers that come w/ it is very handy and usually work pretty well.
Depending on how much you use them, they will last you a couple years.
Why i think they are worth it:
For ten bucks, they are a great backup battery. By that I mean, when get home from work and my battery is almost dead.... I can swap out the battery for the rest of the evening and don't have to put my phone on the charger till bed.
I'm a normal smart phone user, a normal batter will last me the day most days. I don't game or do too many intensive things..
I get them because I know that I will get a new phone every 1.5 to 2 years... so why do my batteries need to outlast the phone?
Who shouldn't use them:
People who really drain their batteries. They simply won't go as many recharge cycles as a normal battery (by that I mean full empty to full charge).
Tips:
Mark your crappy batteries with a permanent marker. The chinese clones look so good that you probably can't tell the difference between them and a real on. Mark the fake ones so that you can use your real on days when you know you really need lasting power. This isn't so important the first 9 months... but after that it could be.
Watch for reviews on a good battery seller (if buying from ebay)... there are good cheap-o batteries and their are crappy ones. I like to let other people figure it out