Develop Bugs

Mugen 1800mAh & 3600mAh Battery

Here's two batteries from Mugen Powers, a 1800mAh and 3600 mAh. From my understanding, The 1800mAh will work with the original stock battery cover. And of course the 3600mAh, has the bulkier build. Here's some links for those interested.
http://www.mugen-power-batteries.com/sony-ericsson/sony-ericsson-xperia-x10.html
http://www.xperiax10.net/2010/05/06/mugen-power-releases-1800mah-3600mah-batteries-for-xperia-x10/

3600mAh is sick but im going to order the 1800 mAh i wish they made a 2000mAh normal looking battery with the stock cover.
Thx for the post!

sexyvito said:
3600mAh is sick but im going to order the 1800 mAh i wish they made a 2000mAh normal looking battery with the stock cover.
Thx for the post!
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Let us know how it works out. I'm curious if there are any heat issues associated with the larger-capacity battery.

I just bought the 1800mAh, but it will be shipped in 10 days and will take 10 more to arrive!

anybody got a 1800mah one yet? thinking of getting one but im not sure they are worth it, has anyone had a battery from these guys before?

Mugen is one of the best second party manufacturer for batteries! It's really quality, no Hongkong Crap.

Interesting, Ive always wondered about suposedly good aftermarket batteries. ....Mugen you say !

OEM batteries is the only option unless the battery is inbuilt. Why are people so gullible? The manufactures always uses the best cells for their phones as it is part of the features present, i.e. long talk/standby time.
I have a HD2 and bought two original batteries which were not from Ebay.

mg77 said:
OEM batteries is the only option unless the battery is inbuilt. Why are people so gullible? The manufactures always uses the best cells for their phones as it is part of the features present, i.e. long talk/standby time.
I have a HD2 and bought two original batteries which were not from Ebay.
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maybe its because the people who know they are no good are so patronising when they are saying such. Not everyone has knowledge of these things and not everyone has had experience of this before but thats no reason to talk down to them. Its logical that these batteries should be better, after all they are rated 400mah higher, if thats not the case then you cannot blame the person who buys it thinking it is.

After market batteries is not a new phenomena and people buying such batteries should have learned by others which have made those mistakes before. It does not matter if it says Mugen or whatever on the battery.
I bought a battery for SE P1 on Ebay for 3 GBP and the picture was showing the retail package. When I received the package it was a "Walkman" branded when P1 is a business phone. I filled a complaint and received my money back. I would never do it without PayPal covering the full amount. I knew it from the beginning, if it sounds to good to be true it is not.

mg77 said:
After market batteries is not a new phenomena and people buying such batteries should have learned by others which have made those mistakes before. It does not matter if it says Mugen or whatever on the battery.
I bought a battery for SE P1 on Ebay for 3 GBP and the picture was showing the retail package. When I received the package it was a "Walkman" branded when P1 is a business phone. I filled a complaint and received my money back. I would never do it without PayPal covering the full amount. I knew it from the beginning, if it sounds to good to be true it is not.
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no, but what about somebody doesnt know anything about battery tech, or somebody who simply bought their phone from and o2 shop and has never had experience of other people buying aftermarket batteries? how are they supposed to know?
i came into this thread asking questions because to me it seems a little too good too be true, i know very little about battery tech but i do know a fair bit about other areas. other people, even those on this site may not have the slightest clue other than 1800 is more than 1400 and to talk down to them because of this is very unfair.

wertzius said:
Mugen is one of the best second party manufacturer for batteries! It's really quality, no Hongkong Crap.
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I laughed.
loggy said:
Interesting, Ive always wondered about suposedly good aftermarket batteries. ....Mugen you say !
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I laughed more. Beat me too it.
Mugen makes horrible batteries and have a long history of such incidents such as the ones above.

£26+ for 400mAh more - seems a bit steep IMO.
Better to buy a second genuine BST-41 from SE - seen them for the same money all over the place:
For example: http://www.amazon.co.uk/EMARTBUY-GE...6?ie=UTF8&s=electronics&qid=1274285908&sr=1-6
and
http://www.play.com/Mobiles/Mobile/4-/13628512/Sony-Ericsson-BST-41-Battery-For-Xperia-X1-Xperia-X10-Xperia-X2/Product.html?_$ja=tsid:11518%7Ccc:%7Cprd:13628512%7Ccat:Mobile+
So long as it arrives with SE logo and hologram on it, it's probably fine.

StampedChipmunk said:
£26+ for 400mAh more - seems a bit steep IMO.
Better to buy a second genuine BST-41 from SE - seen them for the same money all over the place:
For example: http://www.amazon.co.uk/EMARTBUY-GE...6?ie=UTF8&s=electronics&qid=1274285908&sr=1-6
and
http://www.play.com/Mobiles/Mobile/4-/13628512/Sony-Ericsson-BST-41-Battery-For-Xperia-X1-Xperia-X10-Xperia-X2/Product.html?_$ja=tsid:11518%7Ccc:%7Cprd:13628512%7Ccat:Mobile+
So long as it arrives with SE logo and hologram on it, it's probably fine.
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Not true. The P1 battery from Ebay did have a hologram but when comparing against the original battery there was a visible difference.

Mugen 3600 mAh battery
I got my 3600mAh battery on Friday and it works great! 5% drain an hour even with heavy useage. I can go the whole day without charging and still have 30% before I go to bed, beats the OG battery which I had to charge 2 times a day which sucked...

I'm personally a bit skeptical to 3rd party batteries, but I would like to have a 3600mha battery, the added thickness is not a problem. But as far as I know there only available battery from Sony is the stock 1500mha battery?

catfish said:
I got my 3600mAh battery on Friday and it works great! 5% drain an hour even with heavy useage. I can go the whole day without charging and still have 30% before I go to bed, beats the OG battery which I had to charge 2 times a day which sucked...
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That's exactly how my original battery behaves... lol

Not for me.
My original 1500mAh battery was dead by 3.30-4pm after taking it off charge at 8.30am and that was with moderate use. Its been dead by 2pm before now.
Got my 1800mAh Mugen battery and i can take it off charge at 8.30am and have it still on 40% at 5pm after heavy use during my lunch hour.
It does work much better

Saw an eBay auction for the Mugen battery set up by "Mugen Battery".
Read the lower lines and they want to add 19% VAT after the sale is completed to all EU buyers by sending you a separate bill for the VAT (totally against eBay rules)!
What a bunch of shysters!
-> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=180522287953&ssPageName=STRK:MEWAX:IT

Evostance said:
Not for me.
My original 1500mAh battery was dead by 3.30-4pm after taking it off charge at 8.30am and that was with moderate use. Its been dead by 2pm before now.
Got my 1800mAh Mugen battery and i can take it off charge at 8.30am and have it still on 40% at 5pm after heavy use during my lunch hour.
It does work much better
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I agree. I've been using the Mugen 1800mAg battery and it lasts all day without a charge. I even use moxier on direct push for work email.
Sent from my X10i using Tapatalk

Any stock sized exteded batteries?

Are there any battery that can get me a little extra juice (~1800MAh) that stick inside the stock cover?

I saw one on eBay that works with the captivate stock but it's only 1600MAh.....unless I find a bigger one, I plan on purchasing it in the near future...
Sent from my SAMSUNG-SGH-I897 using XDA App

search "samsung sgh-i900 1800" on ebay

thejushinator said:
search "samsung sgh-i900 1800" on ebay
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Can anyone confirm that this battery fits in the Captivate? It doesn't look like it's the same dimensions at all; however, Ebay pictures are usually never what the end up being, so I could be wrong.

dont buy it. it's for samsung omnia

mrdlpatterson said:
I saw one on eBay that works with the captivate stock but it's only 1600MAh.....unless I find a bigger one, I plan on purchasing it in the near future...
Sent from my SAMSUNG-SGH-I897 using XDA App
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Yeah, I saw those on a few places. 1600 doesn't seem worth it to me. Especially if they cheap out on the battery tech, it could easily be a lower battery life than stock
mojmojmoj said:
dont buy it. it's for samsung omnia
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Nice catch, thanks.

what about this one?
http://cgi.ebay.com/1800mAh-Samsung...66762?pt=PDA_Accessories&hash=item230c5844e a

eep2378 said:
what about this one?
http://cgi.ebay.com/1800mAh-Samsung...66762?pt=PDA_Accessories&hash=item230c5844e a
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Good find. I'd be willing to bet it'd work. For ten bucks, I'd say it's worth taking a shot at.....
Sent from my SAMSUNG-SGH-I897 using XDA App

mrdlpatterson said:
Good find. I'd be willing to bet it'd work. The one in my post was for the i900 and it explicitly stated that it'd work for the captivate. This one is for the i900 too, and for ten bucks, I'd say it's worth taking a shot at.....Although I do feel wary about the quality and improvement over the stock battery since the price is that low.
Sent from my SAMSUNG-SGH-I897 using XDA App
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I900? It states I9000 galaxy S so I'm assuming its safe and reliable to use with the captivate

ebay has 2x 1500mah batteries plus charging dock for 10 bucks, free chipping. that's what i'm gonna get. i know they're not going to give me more time per battery, but for 10 dollars, i can afford to treat them like semi-disposable batteries, only i can recharge them and have a couple on standby if i need them.

all those expensive $80 (FAT ONES) mugen batteries are a waste of money imho. the 1600 mah are an ever worse ripoff.
you're paying a premium for the privilege of being spared the horror and anguish of schlepping an extra battery around.
THANKFULLY, our batteries are pretty small and thin, so it's really not such a terrible thing.
anyone use the "EXTENDED" batteries before? how much extra life do you get? NOT VERY MUCH.
if i use my phone "normally" with a 1500 mah battery, it lasts the whole day, or around 15 hours for me.
if i use my phone "normally" with a 1600 mah battery, how much longer battery life will i get?
mah = milliamp/hour = milliamp per hour
1500 ma/15 h = 1600 ma/ X h
plug and chug, cross multiply, whatever, SOLVE FOR X hours.....15.999 hours.
WOW! 1600 mah batteries give you just ONE (1) extra hour of battery life.
the cheapest you can find a 1600 mah battery on ebay is $37.99. you can buy THREE (3) 1500mah batteries for $11.99 and free shipping.
i think it's quite simple to see that the "extended batteries" are just not that great an option.
i quite enjoy math. nergasm ;P

note: i know the longer we use a battery and the more times we charge it, it's maximum capacity gets smaller and smaller over time. i decided for the purposes of my post, this battery "age" factor was negligible.

waikuk said:
all those expensive $80 (FAT ONES) mugen batteries are a waste of money imho. the 1600 mah are an ever worse ripoff.
you're paying a premium for the privilege of being spared the horror and anguish of schlepping an extra battery around.
THANKFULLY, our batteries are pretty small and thin, so it's really not such a terrible thing.
anyone use the "EXTENDED" batteries before? how much extra life do you get? NOT VERY MUCH.
if i use my phone "normally" with a 1500 mah battery, it lasts the whole day, or around 15 hours for me.
if i use my phone "normally" with a 1600 mah battery, how much longer battery life will i get?
mah = milliamp/hour = milliamp per hour
1500 ma/15 h = 1600 ma/ X h
plug and chug, cross multiply, whatever, SOLVE FOR X hours.....15.999 hours.
WOW! 1600 mah batteries give you just ONE (1) extra hour of battery life.
the cheapest you can find a 1600 mah battery on ebay is $37.99. you can buy THREE (3) 1500mah batteries for $11.99 and free shipping.
i think it's quite simple to see that the "extended batteries" are just not that great an option.
i quite enjoy math. nergasm ;P
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What about 1800mah for $10 see my previous link....worth it? Think so
By your math that would be 3 extra hours for same price as 1500mah

ah, not exactly. i can't post links yet.. but there's a seller on ebay who sells THREE (3X) 1500 mah batteries for $11.99 free shipping. even includes the battery dock so you can charge an extra battery on the side while using/charging your phone's battery.
get the 3x 1500 mah. you just get more! plus if you get three batteries, you can leave them places, like one in the car, one at work, one at home, etc

i think it comes down to user preference. if that extra three hours is just what you need to get you through that last leg of your commute to home + the charger, then sure, go for it.
me personally, i was looking for a case on ebay and stumbled on that 3x battery deal. i wasn't originally looking for an extended battery

Id rather get the extended battery than buying 3 1500 batteries. The risk of breaking my phone changing batteries is high. I just bought innocase rugged. It is a hassle putting it in and out of the case. I already bought the one from ebay. 2batteries+dock charger. I don’t use it anymore because im scared to break my phone with those cheap bat. I can use the oem which has better battrery life imo so why take the risk. But the charger is nice to have.
Im not also into buying mugen expensive 1600. I might buy the 1800 for 10 if its been proven it gives more battery life compare to 1500.
Sent from my SAMSUNG-SGH-I897 using XDA App

valid point. you never know what can happen with those non-oem parts. personally i like the idea of always having a spare battery at the ready. having THREE spares is probably overkill though
be sure and let us know how much more life you get with whichever extended battery you get, it would be fun to see the margin of error between real-world battery life and theoretical

eep2378 said:
what about this one?
http://cgi.ebay.com/1800mAh-Samsung...66762?pt=PDA_Accessories&hash=item230c5844e a
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Interesting. Looks good, but I'm skeptical of ebay batteries. Hmm.
mrdlpatterson said:
Good find. I'd be willing to bet it'd work. The one in my post was for the i900 and it explicitly stated that it'd work for the captivate. This one is for the i900 too, and for ten bucks, I'd say it's worth taking a shot at.....Although I do feel wary about the quality and improvement over the stock battery since the price is that low.
Sent from my SAMSUNG-SGH-I897 using XDA App
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i900 and i9000 are not the same phone.
waikuk said:
ebay has 2x 1500mah batteries plus charging dock for 10 bucks, free chipping. that's what i'm gonna get. i know they're not going to give me more time per battery, but for 10 dollars, i can afford to treat them like semi-disposable batteries, only i can recharge them and have a couple on standby if i need them.
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Click to collapse
I'm not looking for a multibattery solution. I'd much rather get two or three extra hours out of one battery, than have 12 extra hours sitting in my pocket.
waikuk said:
all those expensive $80 (FAT ONES) mugen batteries are a waste of money imho. the 1600 mah are an ever worse ripoff.
you're paying a premium for the privilege of being spared the horror and anguish of schlepping an extra battery around.
THANKFULLY, our batteries are pretty small and thin, so it's really not such a terrible thing.
anyone use the "EXTENDED" batteries before? how much extra life do you get? NOT VERY MUCH.
if i use my phone "normally" with a 1500 mah battery, it lasts the whole day, or around 15 hours for me.
if i use my phone "normally" with a 1600 mah battery, how much longer battery life will i get?
mah = milliamp/hour = milliamp per hour
1500 ma/15 h = 1600 ma/ X h
plug and chug, cross multiply, whatever, SOLVE FOR X hours.....15.999 hours.
WOW! 1600 mah batteries give you just ONE (1) extra hour of battery life.
the cheapest you can find a 1600 mah battery on ebay is $37.99. you can buy THREE (3) 1500mah batteries for $11.99 and free shipping.
i think it's quite simple to see that the "extended batteries" are just not that great an option.
i quite enjoy math. nergasm ;P
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Click to collapse
1600 mAh is nothing, I agree. 1800 mAh is not bad, a definite improvement.

I put an order for the 1800mah battery. Ill see if its any good. At worst it doesn't work in which case im out 10 bucks, or 3 cups of coffee.
Im expecting it to be worse than stock so at least ill have an emergency battery.
Sent by an Assonance.

r3ferrei said:
I put an order for the 1800mah battery. Ill see if its any good. At worst it doesn't work in which case im out 10 bucks, or 3 cups of coffee.
Im expecting it to be worse than stock so at least ill have an emergency
Sent by an Assonance.
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Let us know how it performs
Sent from my SAMSUNG-SGH-I897 using XDA App

Do yourself a favor guys....

Stop the debacle and concern on whether or not the 1700mah, 1600mah 1500mah blah blah blah batteries are better than stock.. I have a LOT of experience with Li-Po and Li-Ion batteries (cell phones use Li-Ion technology) and I can tell you WITHOUT a doubt that all these knock off companies are full of SH^* trying to say there batteries are of a higher capacity than the stock battery while staying the same size. Although it is possible to cram more mah into the same size package with li-ion batteries it is VERY unlikely to be able to do so with the current technology out right now. Most of these companies rate their mah on a different scale and actually will pull the battery to a lower voltage to justify their claims when it dosent matter because cell phones have a safety feature that has to shut the phone down at the specified voltage to prevent fires. Yes fires, Li-Ion has a fire risk if it is depleted all the way, not the same risk as a Li-Po battery but a risk just the same. HTC has a separate department that deals specifically with batteries and I can assure you they know and use the most up-to-date batteries they can get their hands on for these devices. There is nothing for them to gain by using inferior batteries in our phone. Those that have purchased the seidio 1600 extended battery and claim to have a better life on the phone are under a placebo effect. If you are just purchasing this "Extended" battery as a spare than buy all means go right ahead but dont expect a miraculous two hours extra from it because it is of lesser quality than the stock battery. I have hundreds of dollars in battery testing and logging equipment and If you guys dont believe me i will run some tests on the stock vs. whichever battery you'd like me too and post the data for all to see, but Ive been down this road before with htc phones and have always come up with the same conclusion......The aftermarket "Extended" batteries actually have less mah's than their stock counterparts.
Of course Im not referring to the htc extended battery in this post, its obviously pushing more mah's with its monstrous size, lol.
....just sayin..

Oh' and to elaborate because Ive also read some concerns over the length of time for charging the thunderbolt (which does seem lengthy I will admit).
Since our phone has such a hard time time keeping up with a normal days use I believe what htc has done is given the battery a longer "saturation charge" for the battery to completely charge before it completes the charge cycle.
Li-ion batteries are charged on a 3 cycle charge system and stage two is what is considered the saturation cycle where the battery may sit at a relatively static voltage for a period of time to saturate the cells with current to top off the charge, some cell phones skimp on this step to give the phone a fast charge time which is termed "charge-and-run" and people assume the device has been adequately charged when it has not. For an adequate "FULL" charge without harming the battery or affecting battery life, typically li-ion batteries take approx. 3-4 hours.

So the 3 batteries I got for 12$ on ebay ARE paperweights?

1234567188 said:
So the 3 batteries I got for 12$ on ebay ARE paperweights?
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No. The two I bought for $44 are. How much do oem batteries cost?
Sent from my ADR6400L using XDA App

I wouldnt go that far, I doubt any of the batteries are "paperweights" yet. Im just making the point that the claims of higher capacity are unfounded and the cheap knock-offs are of lesser quality. Also check where the batteries are made. Good quality Li-ion cells come from Japan.
One thing to note with the cheapies is the temp while charging or under heavy use. Get a temp monitor app and compare between the stock and your aftermarket batteries, they will probably run hotter. Unfortunately I dont have any other batteries to test for you guys other than the stock OEM battery otherwise I would. If I pick any up Ill cycle the stock vs. aftermarket and post the data log between the two.
Also I didnt mean the "fire" comment to worry anyone, Li-ion batteries have protection curcuit that will render the battery useless and unserviceable if the cell reaches a voltage of 2.70v or lower which is where the chemistry of li-ion becomes unstable.

I'll ship your one of the two 1700 when I get it if you wanna test it and post results. Just ask that you ship it back after your done.
Sent from my ADR6400L using XDA App

good info, thanks!

1234567188 said:
So the 3 batteries I got for 12$ on ebay ARE paperweights?
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ha, I bought the same ones you did.
I didn't expect them to be as good as the 1400 mAh battery that comes with the phone. I just wanted to have a spare battery available in case I'm traveling and watching movies or something (on a plane). Even though it says it's 1500 mAh, I expect them to be more around 1200 - 1400 mAh.

Check this website for some information on similar battery testing.
http://batteryboss.org/
I used their results when I purchased the Seido 3500 for my Evo.

I've used Chinese batteries every chance I get. They do work. From an Eris to the Dinc. 3500mah. Never had a problem. Emails and games etc. I bought the extended battery along with the Tbolt. Just don't like the hump on the back. I'm on eBay every night waiting for the Chinese to strike with a extended battery. At least a Better extended back cover. For $10.99 free shipping ill wait 2 weeks for it. F%$% what u heard their cheap batteries work.
Sent from my ADR6400L using XDA Premium App

Every cheap battery I have ever used has worked great.... for 2 weeks.

reg83ny said:
For $10.99 free shipping ill wait 2 weeks for it. F%$% what u heard their cheap batteries work.
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lol thats hilarious

1234567188 said:
So the 3 batteries I got for 12$ on ebay ARE paperweights?
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ddgarcia05 said:
No. The two I bought for $44 are. How much do oem batteries cost?
Sent from my ADR6400L using XDA App
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This was the best part of the thread.

Awwz.... Well I DO know of one way.... connect a bunch of AA batteries in parallel, bust out a dremel, and create a frankenbattery!

ddgarcia05 said:
I'll ship your one of the two 1700 when I get it if you wanna test it and post results. Just ask that you ship it back after your done.
Sent from my ADR6400L using XDA App
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I appreciate it bro, but Id rather not be responsible for someone elses battery lol. Im sure Ill get bored soon enough and order up the batts then do some tests just for shi^s and giggles...

firedude12 said:
I appreciate it bro, but Id rather not be responsible for someone elses battery lol. Im sure Ill get bored soon enough and order up the batts then do some tests just for shi^s and giggles...
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If you do I recommend you buy the 1500 MyTouch4G batteries from ChiChi's htcexpress or their store on amazon. They should be the same a the 1700 Thunderbolt batteries and $20 cheaper.

y2ktibltd said:
Check this website for some information on similar battery testing.
http://batteryboss.org/
I used their results when I purchased the Seido 3500 for my Evo.
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When I get around to ordering up the batteries Ill post a chart like that on a seperate thread for our phone. I have some pretty sophisticated logging equipment. It shows the temp, charge capacity, voltage, mah, cell balance and health in an easy to read graph.
Im not a battery nerd but I used to be into RC helicopters BIG time and when you have a $5000.00 helicopter that can kill someone its just normal practice to have the equipment to check your $800 batteries so they dont fail 80 feet in the air and blow up or decapitate someone, lol

Heres a video of one of my helicopters (Trex 700 electric) , this one uses two 6s 5000mah li-po batteries and each one costs over $300 and they only last 8 minutes before there dead The video isnt of me however, I need a video camera to post mine but the helicopter is identical for the most part.
http://www.youtube.com/watch?v=ANsH5FZq6XA

(speaking from g1, nexus, and g2 experience only)
i've bought extended batteries for phones for less than $15 each all in the 2400 to 3600 mah range. they last 2-3 days with normal use. the oldest one is 3 years old (g1) and still performs like new.
iirc the seller was based in hongkong.
just saying.

the htc extended battery
personally of all the batteries i have tried this is by far the best one until sedio has an 3500mah then i will be getting that i think

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

Mugen Extended Batteries! Woopie!

Hey everyone! I asked Mugen if they're going to make any extended batteries for the SGS2! Guess what?:
Look at my attachment They said yes!
I've been a big supporter of Mugen, they've made some WONDERFUL batteries for my older devices (blackberries mostly), and I certainly hope to get an OEM sized (20% more powerful) mugen battery in my device.
Will you guys?

zkyevolved said:
Hey everyone! I asked Mugen if they're going to make any extended batteries for the SGS2! Guess what?:
Look at my attachment They said yes!
I've been a big supporter of Mugen, they've made some WONDERFUL batteries for my older devices (blackberries mostly), and I certainly hope to get an OEM sized (20% more powerful) mugen battery in my device.
Will you guys?
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Had one of their batteries on my previous phone.
3400mAh... though it was quite bulky. What id really like if they would develop a battery which is wider above the battery compartment.

rikc said:
Had one of their batteries on my previous phone.
3400mAh... though it was quite bulky. What id really like if they would develop a battery which is wider above the battery compartment.
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Samsung makes that, as well: http://samsunggalaxysforums.com/sho...ective-case-extended-battery-power-pack-combo
Which I might get as well. It all depends. I'm waiting this week to get mine SGS2, most people say it's OK. While others moan about its horrible battery life. So I'm not sure. I'll test it out and see. Regardless, I will get the mugen one that fits OEM. And if it's too little as well, maybe the case. All I know, is that I'm already in love with the SGS2

If they would be able to make 2500mAh batteries with the same thickness as the original, I would be happy

CandyAndy said:
If they would be able to make 2500mAh batteries with the same thickness as the original, I would be happy
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Well, they can't do that, maybe 1850, 1900 mAh tops.
What I was thinking off was a battery which is a cover at the same time. A bit like the batteries on the nokia 6210 and 6310i of long ago. You could get those from Nokia in the 'small', normal, and 'large' variants.
The SGS2 and battery construction allows for this. I.E. a battery that 'snaps' on and is the same height as the thicker part of the telephone on the bottom. Such a battery if constructed properly should easily be able to hold +/- 4000mAh while adding little to the overal phone thickness.

anything over 30% more power as the same original size i think its worth change anything under that change my vote to from YES to NOOOOOOO WAY.

rikc said:
Well, they can't do that, maybe 1850, 1900 mAh tops.
What I was thinking off was a battery which is a cover at the same time. A bit like the batteries on the nokia 6210 and 6310i of long ago. You could get those from Nokia in the 'small', normal, and 'large' variants.
The SGS2 and battery construction allows for this. I.E. a battery that 'snaps' on and is the same height as the thicker part of the telephone on the bottom. Such a battery if constructed properly should easily be able to hold +/- 4000mAh while adding little to the overal phone thickness.
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Easily 4,000? I don't think so. You're talking about the actual battery + a few more mm for the top. Now, the rest of the body will be the same thickness of the same cover, right? Then that'll make it impossible to construct any usable MAH into that! So we'll get around 2,000 mah. Which by my standards is just frikken fantastic! I'd buy that in a second

I would highly recommend all of you to take a look at this page:
http://batteryboss.org/
The findings are pretty clear; 3rd party batteries _never_ hold up to their supposed mAh-rating.
If there was a way to make a battery of the same size larger capacity why wouldn't Samsung have done it? Battery capacity is a _huge_ selling point for mobiles, Samsung has truckloads of money and huge departements doing R&D. The same can also be said for all the other big manufacturers.
But lo and behold, time and time again some rather small battery making companies release 3rd party batteries that offers upto 30% increase in capacity at the same size as the OEM batteries, it's just amazing!
One thing is oversized batteries giving you some more juice for your phone (not exactly what it says on the box there either...), but never take a 3rd party's word for it if they say they can cram more capacity into a same-size battery than the original. More often than not they have lower capacity than the OEM batteries despite being rated much higher.

Those are awesome news!
I hope they release it soon!
My experience with the 3200mAh extended battery for SGS was excellent!
I wish they released a smaller one of about 2500mAh of capacity for SGS II, that would be astonishing!
Either way I am looking forward!

SBS_ said:
The findings are pretty clear; 3rd party batteries _never_ hold up to their supposed mAh-rating.
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You obviously never bought or used a geninue Mugen brand battery before then. They're probably the only company that doesn't make ridiculous claims about battery life.
And just because the manufacturer doesn't squeeze more power into their batteries doesn't necessarily mean it can't be done. They do have cost considerations and a profit margin to think about after all.
EDIT: I expect Mugen's OEM size battery to probably be around 1750-1800mah, or about 10% more capacity than the Samsung one.

SBS_ said:
I would highly recommend all of you to take a look at this page:
http://batteryboss.org/
The findings are pretty clear; 3rd party batteries _never_ hold up to their supposed mAh-rating.
If there was a way to make a battery of the same size larger capacity why wouldn't Samsung have done it? Battery capacity is a _huge_ selling point for mobiles, Samsung has truckloads of money and huge departements doing R&D. The same can also be said for all the other big manufacturers.
But lo and behold, time and time again some rather small battery making companies release 3rd party batteries that offers upto 30% increase in capacity at the same size as the OEM batteries, it's just amazing!
One thing is oversized batteries giving you some more juice for your phone (not exactly what it says on the box there either...), but never take a 3rd party's word for it if they say they can cram more capacity into a same-size battery than the original. More often than not they have lower capacity than the OEM batteries despite being rated much higher.
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Just to clarify, it's not always OEM size. It could be a tiny bit larger, but still fits in the OEM slot. That has been the case with all my blackberry batteries. Why my trusty OEM batteries fit comfortably, the mugens still fit well, but are a little bit tighter. So that DOES justify an increase in mAh.
I have also tried non-mugen / seidio and OEM batteries, and those are ALWAYS crap! Capacity usually drops after 2 weeks or even less sometimes. They're horrible. But mugen has always made great batteries (at least in my case) and I would highly recommend them to anyone Seidio ... meh... Not so much! Because they're REALLY over priced haha.

aussiebum said:
You obviously never bought or used a geninue Mugen brand battery before then. They're probably the only company that doesn't make ridiculous claims about battery life.
And just because the manufacturer doesn't squeeze more power into their batteries doesn't necessarily mean it can't be done. They do have cost considerations and a profit margin to think about after all.
EDIT: I expect Mugen's OEM size battery to probably be around 1750-1800mah, or about 10% more capacity than the Samsung one.
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You quoted one sentence and didn't bother to look at the link I posted?
Let me paste it here then (first mAh rating is what they claim, 2nd is actual mAh rating):
TP2 Mugen 1800mAh 1414mAh 79%
TP2 Mugen, exchanged 1800mAh 1256mAh 70%
Hero, Mugen, oversized 3200mAh 2396mAh 75%
And to add some OEM batteries:
TP2 OEM standard issue 1500mAh 1414mAh 94%
Nexus One, OEM 1400mAh 1357mAh 97%
TP2 OEM, new 2150mAh 2150mAh 100%
What tests have you done that proves Mugen's claims are true? Oh really, you didn't do any except anecdotal ones about your own use?
If people want to spend money on batteries with supposed higher capacity, good for them. But us rational people at least won't have to

I had a bad experience with a mugen battery. Bought it, charged it, used it for one time and it crapped out on the second charge. Dead.
Called and emailed for support and they wanted me to send it back, plus tracking, I wasn't going to pay more.
Basically I threw it out. My loss. But I would never by a battery from them again. It looks like cheap stuff of ebay anyways.
Maybe you'll have better luck though.

SBS_ said:
You quoted one sentence and didn't bother to look at the link I posted?
Let me paste it here then (first mAh rating is what they claim, 2nd is actual mAh rating):
TP2 Mugen 1800mAh 1414mAh 79%
TP2 Mugen, exchanged 1800mAh 1256mAh 70%
Hero, Mugen, oversized 3200mAh 2396mAh 75%
And to add some OEM batteries:
TP2 OEM standard issue 1500mAh 1414mAh 94%
Nexus One, OEM 1400mAh 1357mAh 97%
TP2 OEM, new 2150mAh 2150mAh 100%
What tests have you done that proves Mugen's claims are true? Oh really, you didn't do any except anecdotal ones about your own use?
If people want to spend money on batteries with supposed higher capacity, good for them. But us rational people at least won't have to
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True, I was feeling a bit lazy yesterday
Interesting link. Yes, my last Mugen experience was anecdotal (Xperia X1), but if my extended battery had really only lasted ~70% of claimed capacity I would've noticed (plus there would be more people complaining in the forums).
Guess they need to tighten their QC then.

Latest infos:
Dear Thomas,
Thank you for your email!
Yes, we will have XL and SL size for this battery very soon.
It will be around 1700mAh for SL and about 3000+ mah for XL.
We will announce this on our social networks and on our site!

goofy584 said:
Latest infos:
Dear Thomas,
Thank you for your email!
Yes, we will have XL and SL size for this battery very soon.
It will be around 1700mAh for SL and about 3000+ mah for XL.
We will announce this on our social networks and on our site!
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Click to collapse
was looking forward to a plausible 1800mAh standard size battery from mugen... 1700mAh is barely any jump and in all seriousness would have the same or even lesser battery life than the original one.

goofy584 said:
Latest infos:
Dear Thomas,
Thank you for your email!
Yes, we will have XL and SL size for this battery very soon.
It will be around 1700mAh for SL and about 3000+ mah for XL.
We will announce this on our social networks and on our site!
Click to expand...
Click to collapse
Wow, 1700 from 1650? That's nothing. That's literally minutes (10 maybe?) of the screen being on! I would totally skip on that one.
Samsung also makes its own extended battery case, which might also interest me... We'll see