Develop Bugs

Mugen 3200mAh battery for TP2 works in EVO

In case you need an extended battery now, I can report success with a Mugen 3200mAh unit that was intended for a Sprint Touch Pro 2. It cost $70 or 80 when I bought it around Christmas time from an eBay vendor (couldn't find it anywhere else online). Turns out the person I got it for had a Touch Pro 1 and this battery was not compatible so it's been sitting around the house ever since. I just popped it into my EVO 4G and it works perfectly as far as I can tell. Boots up normally and is charging as expected. Of course the back plate does not fit over the fat battery so I left that off and replaced the jelly case which stretches over the whole thing well enough.

os10 said:
Of course the back plate does not fit over the fat battery so I left that off and replaced the jelly case which stretches over the whole thing well enough.
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can we see some pics?

Hero batteries work also.. a lot of HTC phone's use the same batteries. I have like 4 batteries for my evo lol
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280492889203&ssPageName=STRK:MEWAX:IT
I bought these a while back.. worked great in my hero and work just as good in my evo. Plus now I have a standalone wall-charger. Took about a week or so to get here since its coming from Hong Kong.. But it was well worth the ~$10 for 2 batteries and a charger..

ok, i stole its soul for you.

well im glad i order mine from seidio since it comes with the back case but this is good info so i can pass my oem battery to my wife for hero hero with weak battery life

Lol. Nice evo . It's the humpback of xda.
Sent from my Evo 4G

that is disgusting! but more power to you hahaha...lets hope seidio lets you buy just the ext battery cover

oh sweet mother of god i would feel all grossed out if i tried to handle my phone and it was all squishy at the parts that aren't touching the battery or the frame...
How's the battery life with the 3200? After doing some battery life tweaks and mods mine seems to almost be sufficent with the stocker, but it can always use some improvement.

If you don't mind sacrificing the case, I would try cutting a rectangle in it that would leave the protruding part of the battery exposed and let the case hug the phone the way its supposed to. If you cut it just right, the batt should stay in place since it looks like it has a bit of an edge for the case to grip on to.

I'M starting think I should just cancel my order for the 3500 battery and get me 2 1500. What do you guys think?
Sent from my PC36100 using XDA App

I'm using the battery from my tp2 as a spare, and carry it in the smaller pocket in my jeans,i don't even feel it there sometimes. With battery tweaks and charging it in my car (usually around 30 min at a time), I only have to occasionally change to the 2nd battery. If you are sensitive to bulk, then go for 2 batteries to split the load, otherwise a bigger battery is more convenient.
Sent from my Evo 4g using tapatalk

bwg2469 said:
I'M starting think I should just cancel my order for the 3500 battery and get me 2 1500. What do you guys think?
Sent from my PC36100 using XDA App
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Given some of the results from BatteryBoss, I'd say that the battery isn't going to perform at a full 3500mAh. It will still be more than an OEM battery, sure, but I couldn't justify doubling the size of the phone to put it in. You might be better off getting another OEM battery, HTC seems to give about 99% of what they say.

if that site batteryboss is accurate then Mugen's batteries are crap. twice the size for 50% more juice. however, some anecdotal evidence to the contrary: after buying the wrong one, i bought another Mugen extended battery that does work for the TP1 and the recipient is very happy with it. reports that the 3200mAh it lasts about twice as long as the OEM battery.
probably smart to just get another HTC 1500mAh. after the latest update battery drain is much less of an issue anyway.

So can I just go in to a sprint store and ask for a hero battery For free?
Sent from my PC36100 using XDA App

Tundricles said:
So can I just go in to a sprint store and ask for a hero battery For free?
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and if that works, try asking them for a handful of money.

bwg2469 said:
I'M starting think I should just cancel my order for the 3500 battery and get me 2 1500. What do you guys think?
Sent from my PC36100 using XDA App
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The batteries + charger that was listed earlier in this thread work GREAT I've been using them for a few days now great freaking deal ($10 shippped)

Anyone know if the Tilt battery here will fit the Evo with a modified case / back plate? http://www.amazon.com/HTC-Extended-Li-Ion-Battery-RHOD170/dp/B002Y24MJ2
I know Seidio makes a modified back plate that looks like it would fit this and according to battery boss this is the gold standard of extended batteries.

Also confirmed, the Mugen 4500mAh battery for Sprint Touch Pro 2 works in the Evo as expected. It's very... thick. About as thick as the Evo with a jelly sleeve on. Put together it's like the Evo has it's own little podium to stand on.
Assuming batteryboss tests are accurate then true capacity is closer to 75% or ~3375mAh. Main purpose for me is a power supply that can run GPS tracking apps like Cardio Trainer all day uninterrupted. Thickness not an issue since the whole package is tucked away in a Camelback.
Got it on eBay, I don't know where else to find them. Mugen is OOS and ridiculously expensive anyway. An alternative would be an external battery pack that supplies power through a USB port, then cable it to Evo.

2000 mah battery

Did anyone had tried ebay 2000mha battery? I winder what is the best and cheapest battery that I can get that does not require new cover.

tritron777 said:
Did anyone had tried ebay 2000mha battery? I winder what is the best and cheapest battery that I can get that does not require new cover.
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I got the battery, I didn't notice a huge difference but I haven't tracked it at all.

They're are lying to you. basically any battery that's the same size as the stock battery is going to have the same amount of power as the stock battery. The only way to get extra juice is to add extra bulk. However, Seidio makes batteries that don't add extra bulk. Those are rated at 1750 mah. While I still you won't get much more battery life out of these, there at least a reputable company you can trust.

Andida is suppose to be better than a no-name battery. It is a name brand, just a cheaper name-brand and known in China. I bought their 2000mah battery and it seems to be about as good as the stock 1500mah. Then, i found that BatteryBoss tested the Andida 2000mah and it actually tested to be worse than the stock 1500mah Evo battery. I wouldnt want you to waste your money. I guess Seidio would be the only option because Mugen didnt do to good either at BatteryBoss. Sucks too, because they are so expensive, but if you MUST keep the factory battery door and want more juice than thats about your only option. I bought the 3000mah ebay battery with extended battery door and it is just awesome!! Yes, it is bigger. But, its actually VERY nice and looks and feels good with the bigger cover. Oh, and it is hard to kill . I turned on every radio and streamed music over wifi to bluetooth speakers for hours last night trying to run it down and only lost about 7% in the 2 hour span of doing this....

I tried the Andida 2000 and was not better then the OEM battery. Also have the extended 3500 from ebay(10.00) and works well, go a whole day+ with wifi, gps, sync on with mild to moderate use. Switch off and on with the oem and extended.

The 2000mah battery is garbage doesnt last longer than oem bat like others have said. I bought a 1800mah battery from ebay. its been over 24hrs and Im at 22% after 2hrs of calls, 30 txts, 1hr web browsing, & 1hr of pandora, bt is on all day too! I highly recommend, here's the link
http://cgi.ebay.com/2x1800mAh-Battery-Dock-Charger-Sprint-HTC-Evo-4G-/250661324218?pt=PDA_Accessories&hash=item3a5c9445ba#ht_3914wt_807

The andida 2000 I purchased was a good battery but I guess I was one of the lucky ones. I currently have a 3500mah battery. I see that there are also 2000mah galiliO batteries now available. I was thinking of getting one and comparing it to the stock battery and the andida 2000. I don't know if the galilieO batteries are 2000mah or just the re-labeled 1800mah batteries that are all over ebay.

@snowplow
you say the only way to add more juice is by adding bulk, but then in the next sentence say seidio is able to do it without adding bulk? not really making sense there! seidios battery i believe tested to be in the 1400s, below the OEM.
Sent from my Supersonic using XDA App

I have it and is not any difference.
Sent from my PC36100 using XDA App

Just bought 2 for $16 with a charger... So I'll let you know. Can't see myself being uber angry if it is the same as stock, as having a few spare batteries for mere pittance is great. Gotta love that eBay...
Galilio 2000mah. We'll see.

I actually got the Galileo batteries as well, so far, I'm seeing a little better than usual battery life. which makes me optimistic, considering you don't see the true potential until a few charge cycles, I just got them yesterday.

If you guys are running after market batteries here's a tip.
I have been running my Sedio 1800 mah (I know tested only comes to 1500) and lately my phone has been powering off on it's own. It happened to at the same time as I was running various gingerbread roms so I thought it had something to do with that. After some experimentation I realized that it was happening when I dropped my phone on the desk(ohh, yes I have a tpu case on the phone). I thought great, its a hardware issue and I don't have a warranty. Then after a long day streaming and lots of phone calls I needed to swap batteries and I installed my stock battery. I then noticed that my power off issues went away. I dropped the phone on the desktop 10 more times and no issues. So apparently the Sedio battery doesn't fit quite right in the phone, so wedged some paper at the top of the battery to try to give a little more pressure on the battery pins and that seems to have solved the issue.

the galilios are good batteries for the price, but i believe them to be closer to 1300mah based on my results vs stock.
Sent from my PC36100 using XDA App

Just got a "Galilio" 2000mah yesterday. I'll be seeing how it works out over the next few days and report back. It is blatantly for a TP2 but fits VERY snugly in the EVO, (almost too snugly) and is a pain to get in and out. I have to use the corner of my back cover to pry it out...but if it gives me more battery I'll be taking it out less...

Tuffgong4 said:
Just got a "Galilio" 2000mah yesterday. I'll be seeing how it works out over the next few days and report back. It is blatantly for a TP2 but fits VERY snugly in the EVO, (almost too snugly) and is a pain to get in and out. I have to use the corner of my back cover to pry it out...but if it gives me more battery I'll be taking it out less...
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hmmm.. out of the 3 ive used i cant say i had that problem.

Tuffgong4 said:
Just got a "Galilio" 2000mah yesterday. I'll be seeing how it works out over the next few days and report back. It is blatantly for a TP2 but fits VERY snugly in the EVO, (almost too snugly) and is a pain to get in and out. I have to use the corner of my back cover to pry it out...but if it gives me more battery I'll be taking it out less...
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I have the exact same thing!. I actually had to rake a razor to one of them and Shane off a little bit of plastic from the top of the battery. Just a tiny bit. Fits perfect now.

There's already a discussion regarding this battery and others at this thread:
http://forum.xda-developers.com/showthread.php?t=925298
That thread is more current than this one that started in Sept '10. Should we use that thread instead of keeping 2 very similar ones? Just a thought.

I have the Andida battery- worked great for a few weeks. Then I started to notice it would lose its charge fast. But this battery stated it was for the TP2- either way it fits the Evo. But when I had it on my TP2- it would hold a good charge.
I love the ebay 3500 batteries- great and still holding a charge (had it for almost a year). I use this one I am going on a long trip or Army training.
I have two of the Galilio 2000mah batteries- made for the TP2- no need to shave any crap- fits perfectly on my Evo. I measured both the OEM and the Galilio batteries- no difference. The Galilio is worth my $9- and I want that OEM look- I also ordered a white OEM Htc back cover. Read somewhere here in XDA- charge your batteries atleast once on a wallcharger- not usb. I find the batteries last longer.
Note, i did buy a generic 2000mah (non Galilio brand)- that was crap.
I have (2) 3500 mAh batteries, (1) 3000 mAh battery, (2) Galilio 2000 mAh batteries, (1) 1750 mAh Seidio battery... and others.

Normal Size Extended Battery Thunderbolt

So i found this NORMAL sized extended battery on ebay. It has 1700mah opposed to the 1400 mah the factory one has. I have the verizon extended battery and it works great but, IT IS HUGE and there are no decent cases. So for $15 bucks i gave it a shot. When i get it ill let you know if the 300mah makes a difference.
http://cgi.ebay.com/HTC-Thunderbolt-Verizon-1700mAh-Extended-Slim-Battery-/150597849293?pt=PDA_Accessories&hash=item231054d0cd
UPDATE
THIS BATTERY SUCKS

albotz21 said:
So i found this NORMAL sized extended battery on ebay. It has 1700mah opposed to the 1400 mah the factory one has. I have the verizon extended battery and it works great but, IT IS HUGE and there are no decent cases. So for $15 bucks i gave it a shot. When i get it ill let you know if the 300mah makes a difference.
http://cgi.ebay.com/HTC-Thunderbolt-Verizon-1700mAh-Extended-Slim-Battery-/150597849293?pt=PDA_Accessories&hash=item231054d0cd
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If I am not mistaken...there are threads on this battery and some people didn't find that much of a difference....but each phone is different..
I have the extended battery.....I have a silicone skin that I cut to fit the extended batter cover and then I bought a holster for it...works AWESOME

I didn't see a thread for this specific battery. I cut the case also, and it falls off every time i put it in my pocket drives me crazy lol. Something has to give a 2in thick phone doesn't do it for me. Plus that battery is heavy. So lets see how this cheap battery does

There's a thread somewhere about an independent test from "battery man" or something of the like.
He's stated that these batteries are often rated higher than whey they actually are, like 1700 actually being a 14 something. I'll see if I can find it. It was an interesting read.
Here you go.
http://forum.xda-developers.com/showthread.php?t=1021992
and
http://batteryboss.org/

It's not a 1700 mAh battery. It's a battery with a 1700 mAh sticker on it. With all the complaints about battery life, and the rumors that the TB was delayed while they worked to improve it, HTC would have gone with a higher capacity battery if one were available in a suitable size.
I got a couple of "1500 mAh" batteries and a charger from Hong Kong for $9 from ebay. They seem to work about the same as the OEM, enough to get me through a day (no 4G here, yet).

Some others had purchased these. If you run Battery Monitor Widget, it tells you how many mAh your battery is, it reports the correct 2750 for my extended, but on these 1700's it reported 1350.

I just need to come out and say it. A battery is a battery, you can't get a huge amount more of mah out of a battery that is the same size. There is no amazing battery that can hold 30% more energy and be the same size. You can increase capacity by taking out circuits, thinning the wall, and optimizing space in the battery but you can't make it tons higher. These batteries promoting themselves and so much more charge in the same package are a scam.

I've been posting on threads on these "1700mAh" batteries because I dislike the company that makes these ads. Its false advertising.
The story is that the seller already had "1500mAh" batteries on Amazon for the MyTouch 4G. Then when the TB came out he listed them on Amazon for the TB advertising them as 1500mAh. A week later he raised the price from $35ish to $50ish for 2 batteries and changed the title to state that its a 1700mAh battery.
For a short period of time people purchased this "1700mAh" battery for the TB. When they received it the sticker still stated 1500mAh. Then later people started getting the batteries with the stickers saying "1700mAh"
Summary: False advertising. Do not buy. Exactly the same as the $3-5 eBay batteries, so SAVE YOUR MONEY

BELIEVE ME I HAVE MY DOUBTS .ill test it and see what it does. it popped up on ebeay and ill try it out. gEeEeez. negative negative negative lol

albotz21 said:
BELIEVE ME I HAVE MY DOUBTS .ill test it and see what it does. it popped up on ebeay and ill try it out. gEeEeez. negative negative negative lol
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No one is being negative. They're just trying to let you know that you're getting scammed. Even if it was actually 1700 mah you'd get what, a extra hour out of it?

i have this battery and i got to say ain't worth it unless you want an extra battery just like the one that comes with the tbolt...

Hemorrdroid said:
Some others had purchased these. If you run Battery Monitor Widget, it tells you how many mAh your battery is, it reports the correct 2750 for my extended, but on these 1700's it reported 1350.
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That sounds about right, mine is on its way back to the company!

Hemorrdroid said:
Some others had purchased these. If you run Battery Monitor Widget, it tells you how many mAh your battery is, it reports the correct 2750 for my extended, but on these 1700's it reported 1350.
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There's a setting where you can change the capacity. My stock battery read 1350 also.
With that said, I bought these 1700 mah batteries and they are worse than stock. I guess it's a decent price for two extra batteries and a charger, but they suck. They dont extend anything.

i have tried this battery, it is the same, if not worse then the OEM battery.

I bought two of these 1700 mah batteries with a charger a few days ago. I only paid about $26 after shipping so we'll see how well they do. I'm not expecting miracles, I just need one to leave at the office and one for home. If my battery dies, I can still use my phone.
Sent from my 4G Thunderbolt.

you would probably be better off just flashing a kernel/rom that isn't all bloated and is more energy efficient. Ever since flashing the perfect storm rom my battery life was better. Flashed CM7 when the prealpha came out and its even better.

I'm on the Twisted Sense rom with the bamf_4.3b kernel. I have no complaints with the rom or kernel. My battery drain comes from me never putting the phone down.
Sent from my 4G Thunderbolt.

Never seem to get anyone posting results in these threads. I'd imagine there won't be much of a difference, but still would be nice to see what people are getting.

I'm still waiting on mine to come in.
Sent from my ADR6400L using Tapatalk

My extended batteries came in yesterday. I charged them and carried one today. My phone had drained by about 2:00 pm so I popped in one of my new ones. It's 8:30 and I'm at 69%. I wont say that I'm getting fantastic battery life, but it's fair. I did use navigation and I browsed the web a bit. After around 5 pm, I was on wifi so I'm sure that helped. For $26, I don't think I made a bad deal.
Sent from my ADR6400L using Tapatalk

Affordable Extended Battery

Does anyone know of a good, reliable extended battery that won't charge up the ass like the Mugen one does? (I'm sorry, but my Fascinate got a whole day on a $20 extended, $100 is unacceptable)
Sent from my SCH-I535 using XDA Premium HD app

obsidianchao said:
Does anyone know of a good, reliable extended battery that won't charge up the ass like the Mugen one does? (I'm sorry, but my Fascinate got a whole day on a $20 extended, $100 is unacceptable)
Sent from my SCH-I535 using XDA Premium HD app
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I got one from an Amazon seller for $12. I think it's 3,700 mah and I easily get a day out of it. However, it's stupid to use something that large and that adds weight and bulk to such a thin and light device. Especially when it's just as inexpensive and easy to simply buy 2 or 3 stock-sized batteries and a wall charger on eBay. I carry 1 or 2 spare batteries in my back pocket and don't even notice they're there. Why wouldn't you do this?

im currently testing this one.
on my 2nd cycle right now with 26% left im at:
21hs up time, 3hrs screen time about 1hr Pandora. been on 4G/3G the whole time with all my radios on but GPS.
it seems like im getting about 30% more life out of this batt vs the OEM. which seems to be getting me over a full day of use with out needing a charge.
http://forum.xda-developers.com/showthread.php?t=1787678

obsidianchao said:
Does anyone know of a good, reliable extended battery that won't charge up the ass like the Mugen one does? (I'm sorry, but my Fascinate got a whole day on a $20 extended, $100 is unacceptable)
Sent from my SCH-I535 using XDA Premium HD app
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MUGEN is a great brand, i know because i own their battery for my G2 and S2, you get what you paid for man. on test i found that the MUGEN outlast the SEIDO by 30-40 min screen on time under hard benching...now this data is of course base on S2 battery.
right now i am testing Hyperion, look for my post, i will give more update soon as i am on my 3rd full charge right now, will bench by the end of the week. I am in talking with MUGEN and Anker to give me a free sample to do a review on their battery,

id agree that "namebrand" batteries tend to yield better results.
in fact i would have personally preferred a Samsung Extended battery. but i cant see spending $100 one a 4000mAh battery from Mugen when a replacement 63Wh batt from Samsung for my M11x is $125.

pieces of cake said:
I got one from an Amazon seller for $12. I think it's 3,700 mah and I easily get a day out of it. However, it's stupid to use something that large and that adds weight and bulk to such a thin and light device. Especially when it's just as inexpensive and easy to simply buy 2 or 3 stock-sized batteries and a wall charger on eBay. I carry 1 or 2 spare batteries in my back pocket and don't even notice they're there. Why wouldn't you do this?
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Just throwing out counterpoints: It can be a hassle to have to shut down, take the phone out of a case (if you have one), swap batteries and put it back together, etc. With an extended, you don't miss a beat. Also, since the phone is thin and light, having a big, heavy battery isn't so bad -- makes it feel about the same as a lot of older phones.
That said, I'm using a stock battery, but have been considering a nice extended battery eventually.

ponyboy82 said:
Just throwing out counterpoints: It can be a hassle to have to shut down, take the phone out of a case (if you have one), swap batteries and put it back together, etc. With an extended, you don't miss a beat. Also, since the phone is thin and light, having a big, heavy battery isn't so bad -- makes it feel about the same as a lot of older phones.
That said, I'm using a stock battery, but have been considering a nice extended battery eventually.
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These are my exact gripes with multiple batts.
Has anyone tried this battery/company in general? http://www.amazon.com/gp/aw/d/B00757ERD2/ref=aw_ls_1_1?colid=3EACYNGZLF0SP&coliid=I2TMXT0T6H4NMI
Sent from my SCH-I535 using XDA Premium HD app

Delete

^ +1
I just don't see how any one can justify carrying extra batteries on a +600$ phone?
I mean the battery life is great already, not shabby by any means. I got 1d 11h with 3 hour screen on time on my Verizon phone this weekend on stock battery. But no call or hotspot like I do during my work day. But a ~2500mAh would probably last me the whole day even on a work day. I'd pay $45 for that with nice cover. (slightly thicker won't be such a bad thing on this phone)
I have few more days before I can return this phone to verizon for full purchase price of 600 bucks. But it's making me think twice about returning it because it's still 2x better than my rooted galaxy nexus.

Carrying extra batteries, at least for me, is zero hassle. They slip into my back left pants pocket and I never even notice they're there. Granted, I can see swapping batteries being somewhat of a hassle for some people but, even if you had an extra step in removing a protective case, how long could it really take? 1 or MAYBE 2 minutes? This phone shuts down quickly and boots up just as fast.

[Q] Slim extended battery?

Hey everybody,
I've tried looking to see if there was a thread about these two batteries before posting but came up with no results. I'm running a stock SGSII (4.0.4) with an Otterbox Defender (downhill skateboarding/military protection). Phone usage includes emails, texting, FB and games.
I'm looking for an extended battery after going through TWO Samsung OEM batteries within 11 months. Both the batteries got the bulge of death. Sprint store techs have run multiple diagnostics and replaced parts but have no idea why this is happening and won't replace my phone.
I came across a 'Galilio' 2500mAh battery as well as a 'Sporting Persistence' 2520 mAh battery while searching around on eBay. I'm staying away from the Andida 2300mAh after reading several stories about how the contacts were misaligned and the battery wasn't really 2300mAh.
I don't want to go with a big, bulky case due to my requirements for protection. I've read about the Mugen 1950mAh batteries being pretty decent, but they're a bit more than I want to spend.
Thoughts? Ideas? Anyone tried either of these?
Thanks!

I got a 2100mah battery that was really just a fake. It does work fine as a spare and it was cheap but its worse life than stock. I suspect those 2500mah you found are fakes too. I tried the andida which had better life than stock but the contact misalignment caused random reboots after a while.
My suggestion is to just buy an external charger and multiple batteries. I just pop an extra battery in my pocket and go about my day then if I burn thru two batteries in one day I still have the third at home.

Anything on the mugen battery? I want to keep my protective Trident case on my phone instead of putting on the cheap back and 3200mah siedo battery where I can't protect my phone... and wish to have increased battery life and I keep having the problem where when I reboot I go from 69% to 19%..... I haven't checked for battery bulge yet
Sent from my Galaxy Nexus using xda premium

Beware of Lithium battery scams, ONLY BUY MUGEN!!!
xPIZZLEx said:
Hey everybody,
I've tried looking to see if there was a thread about these two batteries before posting but came up with no results. I'm running a stock SGSII (4.0.4) with an Otterbox Defender (downhill skateboarding/military protection). Phone usage includes emails, texting, FB and games.
I'm looking for an extended battery after going through TWO Samsung OEM batteries within 11 months. Both the batteries got the bulge of death. Sprint store techs have run multiple diagnostics and replaced parts but have no idea why this is happening and won't replace my phone.
I came across a 'Galilio' 2500mAh battery as well as a 'Sporting Persistence' 2520 mAh battery while searching around on eBay. I'm staying away from the Andida 2300mAh after reading several stories about how the contacts were misaligned and the battery wasn't really 2300mAh.
I don't want to go with a big, bulky case due to my requirements for protection. I've read about the Mugen 1950mAh batteries being pretty decent, but they're a bit more than I want to spend.
Thoughts? Ideas? Anyone tried either of these?
Thanks!
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Click to collapse
In my search for extended slim batteries I learned many lessons. I kept buying them from eBay until I got to the bottom of the conspiracy.
The batteries I purchased were for my Galaxy S2 and my Galaxy S3.
Lesson #1: If the battery price is too good to be true, it probably is. Case in point, I purchased several great deals on 'Samsung' brand OEM replacement batteries, all were under $10 bucks and all were counterfeits. All lasted only 2/3s of the time compared to the old and well used battery I was trying to replace. Some of these fakes didn't even have the chip inside that communicated with my phone, so as soon as you plugged in the wall charger the phone would immediately cut off, which is bad for your operating system. If the battery doesn't communicate with your phone properly, it's a fake. I went one step further and weighed the stock battery against the replacement battery and the replacement was far lighter, further proving it was a fake.
Lesson #2: High capacity fakes. I decided to try my luck at after market name brand and generic batteries that claimed longer battery life (a higher milliamp hours [mAh] or higher capacity). I ordered them one at a time, each time one came I would weigh it, it would ALWAYS be lighter than the stock battery (the only exception is Mugen). That was my first clue at fraud. Some of these brands communicated perfectly with my phone and charged OK but they were still lighter, telling me they had less lithium and less capacity. I tested each several times (because it takes a few charges to break in a new battery) but they were the same as the others, all would last only 2/3s the time of the worn out stock battery I was trying to replace. In all cases I would return the battery and try a different brand. In the end buying Mugen brand for $40-$45 a battery is the only way to get a quality replacement battery that lasts a long time but fits like the stock battery.
Mugen batteries are the only brand I can find that actually weigh more than stock OEM batteries. Mugen batteries last a long time, just like they claim. Now I only buy Mugen. Save up your money, it is worth the extra cash for the longer life. Would you want to carry replacement batteries around with you and swap them out twice a day or just use one Mugen? I charge my phone once at night and then use it all day long. Even on days with heavy use I still put it on the charger with a charge left.
I've tried most of the names you mentioned and many more. Maybe there are other illegitimate companies other than Mugen, but I wouldn't know, and I've looked. For anyone wanting to continue my search, the key is to research the name brand and see if they have a website that looks illegitimate. Do they sell batteries for other model phones and devices? Do they sell their own brand of battery charger? If not they are fly by night and are selling you a low capacity battery with a short life but have slapped a label on that claims a higher capacity. If you order one WEIGH IT and compare the weight to your OEM battery that came with the phone.

Batteries
joeiipuff said:
In my search for extended slim batteries I learned many lessons. I kept buying them from eBay until I got to the bottom of the conspiracy.
The batteries I purchased were for my Galaxy S2 and my Galaxy S3.
Lesson #1: If the battery price is too good to be true, it probably is. Case in point, I purchased several great deals on 'Samsung' brand OEM replacement batteries, all were under $10 bucks and all were counterfeits. All lasted only 2/3s of the time compared to the old and well used battery I was trying to replace. Some of these fakes didn't even have the chip inside that communicated with my phone, so as soon as you plugged in the wall charger the phone would immediately cut off, which is bad for your operating system. If the battery doesn't communicate with your phone properly, it's a fake. I went one step further and weighed the stock battery against the replacement battery and the replacement was far lighter, further proving it was a fake.
Lesson #2: High capacity fakes. I decided to try my luck at after market name brand and generic batteries that claimed longer battery life (a higher milliamp hours [mAh] or higher capacity). I ordered them one at a time, each time one came I would weigh it, it would ALWAYS be lighter than the stock battery (the only exception is Mugen). That was my first clue at fraud. Some of these brands communicated perfectly with my phone and charged OK but they were still lighter, telling me they had less lithium and less capacity. I tested each several times (because it takes a few charges to break in a new battery) but they were the same as the others, all would last only 2/3s the time of the worn out stock battery I was trying to replace. In all cases I would return the battery and try a different brand. In the end buying Mugen brand for $40-$45 a battery is the only way to get a quality replacement battery that lasts a long time but fits like the stock battery.
Mugen batteries are the only brand I can find that actually weigh more than stock OEM batteries. Mugen batteries last a long time, just like they claim. Now I only buy Mugen. Save up your money, it is worth the extra cash for the longer life. Would you want to carry replacement batteries around with you and swap them out twice a day or just use one Mugen? I charge my phone once at night and then use it all day long. Even on days with heavy use I still put it on the charger with a charge left.
I've tried most of the names you mentioned and many more. Maybe there are other illegitimate companies other than Mugen, but I wouldn't know, and I've looked. For anyone wanting to continue my search, the key is to research the name brand and see if they have a website that looks illegitimate. Do they sell batteries for other model phones and devices? Do they sell their own brand of battery charger? If not they are fly by night and are selling you a low capacity battery with a short life but have slapped a label on that claims a higher capacity. If you order one WEIGH IT and compare the weight to your OEM battery that came with the phone.
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Have you ever tried the Anker brand? I have also read that those are legit. But I will like to hear that from someone that actually runs serious tests on them. Thank you

I've had the anker battery for over a week now. With my normal use I get about 20% more life than my stock non bloated battery
Sent from my SPH-D710 using Tapatalk 2

I have the andida and it seems to last about 2 hrs more then the stock one but ever once in awhile when it over heats the phone resets and you lose about 20% battery
Send from a mircowave

Chichitech is legit, 20$ and got a higher capacity, heavier battery for my HTC Evo 3d. I will buy from them again.
Edit not happy with my chi chi tech batteries for sgs2. Loved it for HTC evo v 4g but it seems to be decidedly higher quality than these ones for the sgs2