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hi all,
I've just bought a 2nd-hand XDA iis and is battery is not so good.
So I intend to buy a new one.
But I'm wondering which bat is the best now.
I've gone to ebay and see that they have some types: original 1500 mAh, 2400mAh, "slim" 3200 mAh and "fat" 3600mAh.
I think the 3600mAh is the most suited for my xda.
Is there any better choice? Where could I buy it?
With the 3600mAh, how long would the xda would last if I use wifi IE with the lowest backlight?
Do any of you have any problems with it?
Could I use my old charger or Do I have to buy a bigger one?
Could I still use my usb-cable (not cradle) for charging my xda?
And is there any conflict with WM5? (I've just read in our forum that someone have problems with WM6).
Thank all of you so much.
son_volam002 said:
But I'm wondering which bat is the best now.
I've gone to ebay and see that they have some types: original 1500 mAh, 2400mAh, "slim" 3200 mAh and "fat" 3600mAh.
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Click to collapse
I would say that primarly it would depend on if a 'fatter' and heavier phone bothers you.
Keep in mind that just about all the cases and various accessories that hold or clip on to the phone are designed for a phone that has the original battery, so a thicker battery may well make them unusable (cases are the primary example I would give).
How long it would last is impossible to say, as it depends on how you use the phone, what apps are on the phone, and so on. Also, 3rd party battery quality does vary. Which manufacture is the best, I can't say as I've never seen any place that reviews battery life.
I've never heard of any incompatibilities when talking about a particular version of win mobile and a certain capacity battery, and can't imagine that it's even possible.
Pick one and see what you get, then post the results here so the every one else can benefit from your experience.
jdc said:
I would say that primarly it would depend on if a 'fatter' and heavier phone bothers you.
Keep in mind that just about all the cases and various accessories that hold or clip on to the phone are designed for a phone that has the original battery, so a thicker battery may well make them unusable (cases are the primary example I would give).
How long it would last is impossible to say, as it depends on how you use the phone, what apps are on the phone, and so on. Also, 3rd party battery quality does vary. Which manufacture is the best, I can't say as I've never seen any place that reviews battery life.
I've never heard of any incompatibilities when talking about a particular version of win mobile and a certain capacity battery, and can't imagine that it's even possible.
Pick one and see what you get, then post the results here so the every one else can benefit from your experience.
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At last, I've bought a fat 3600 battery and I think it's a good decision.
Now, I can use my fone for browse Internet in near 6 hour with wifi; or I could use it with 5 day stanby (how amazing).
some small problems are:
- the fone is thicker and heavier (no problem with me).
- My third party charger is a bit hotter.
- And the charging time is longer (ofcourse).
do not by batteries by ACME power. I have bought 2400mAh and feel no difference compare to standard old battery. Besides, I have troubles with bt. it turns off by its self with only this battery.
I bought a battery for my Htc Harrier about 4-5 months ago. Sorry i dont know the brand of it but its says its 3200mah and "replacement for XDAIII". The inside of the battery is kind of bloated out from the heat and looks a little dodgy but still works. Ive had a few problems with it where it powers off for no reason. When i turn it on again the battery charge looks fine.
Just a couple of days ago for the first time my phone just completely hard resetted and lost all my data. I again turned it on and the battery charge was fine. im blaming that on my battery.
I use my phone mainly for listening to music on my bluetooth headphones while im driving to school and for typing things out on my bluetooth keyboard at school. The standared battery that comes with the phone simply has not enough charge time to do all this.
With all its annoying problems i still use my battery. I just make sure i back up my most important things on my storage card. And charge it every night.
Soon im going to buy a HTC Blue Angel due to my countrys crappy plans that the Harrier comes with. Maybe i might buy the 3600mah while im at it.
So my advice is if you dont need the charge of a extended battery then stay away. Unless you are like me and need the extra battery power then beware of some stress ahead that it might give you.
I found some 1500mah batteries on ebay. They are dirt cheap and even have free shipping. Sounds to good to be true so anyone tested one of these batteries already?
since i cant post links look on ebay for: Legend 1500mah
The legend only came out a month or so ago, and you really believe that there are already replacement batteries with a higher capacity on the market?
If you're lucky they'll only be of inferior capacity. If you're not so lucky you might end up with a destroyed phone, or worse like severe body burns from an exploding piece of crap battery made by a Chinese company that couldn't give a damn.
Protect your phone by not buying one. Protect other consumers by not buying one, thus reducing the amount of counterfeit product on the market. Protect yourself from bodily harm by not buying one...
Sent from my HTC Legend using the XDA mobile application powered by Tapatalk
Although I praise your concerns about my personal safety that wasn't the question. I know they are dirt cheap and I know what the risks of faulty batteries are. But you can't judge everything on gut feeling so that's why I'm asking if anyone had experience with them. If they are selling them people must be buying them.
Sadly people buying a product doesn't actually say much about it's build quality but I'll not bother you further with that
If someone has a good report on those batteries I'd also be interested in reading it. But are people allowed to browse the net from the Intensive Care unit? (only kidding)
Sent from my HTC Legend using the XDA mobile application powered by Tapatalk
wow, sounds very ominous, beware the evil battery
I would be interested to know if these are a scam or not.
Does anyone offer a larger capacity battery for the Legend yet? (Or is it likely they will?)
for alot of phones there are large capacity batteries how ever for the legend its harder i guess. Mostly the higher capacity batteries are slightly bigger but the legend design doesnt allow any room for that. So it has to be a battery with exactly the same dimensions.
GeoMil said:
I would be interested to know if these are a scam or not.
Does anyone offer a larger capacity battery for the Legend yet? (Or is it likely they will?)
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Well if you look all over eBay (sorry can't post link) there are 1500mAh battery's widely available from Hong Kong and the likes!
But for €6, i dunno will it even work!
Why do you want others to "test" these batteries for you?
Why not buy one yourself - test it - then let us know what they are like?
ziffos said:
Why do you want others to "test" these batteries for you?
Why not buy one yourself - test it - then let us know what they are like?
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Haha!
Nice!
my nkia e71 battery is virtually the same size, so there is no reason why there can't be a good quality 1500 at some point
nokia e71's screen is about half the size, not a touchscreen, inferior technology to the legend's, far fewer apps so much less usage etc etc etc
I'm not comparing the phone, only the battery.
but the battery is only as good as the power requirements determined by the phone's components and applications. I'm sure if you stuck the legend's battery into an old brick it would also last ages, but that's largely because it's not being drained by anything
KK43 said:
but the battery is only as good as the power requirements determined by the phone's components and applications. I'm sure if you stuck the legend's battery into an old brick it would also last ages, but that's largely because it's not being drained by anything
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He is saying the battery has the about the same physical dimensions and packs 1500mAh, so it is possible to make a good quality battery with these specs.
Got it, but I meant the current battery is probably just as good quality wise, but more juice is being sucked and at a faster rate.
Here's another way of putting it, do you know of any amoled touchscreen smartphone that runs many apps, WiFi, gps etc etc and lasts several days of regular use?
ive just ordered one 1500mAh HIGH CAPACITY BATTERY FOR HTC LEGEND its on ebay but its a uk company called ecell, ive had stuff of them before and the quality always seems good, ill post back when ive got it and tested
bazz7777777 said:
ive just ordered one 1500mAh HIGH CAPACITY BATTERY FOR HTC LEGEND its on ebay but its a uk company called ecell, ive had stuff of them before and the quality always seems good, ill post back when ive got it and tested
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Any results yet =)?
I have exactly the same one in mine Legend.
To be honest....it is ****.
Some e-mailing, browsing, a hour of music listening and BOOM...it's drained.
Beware.
I honestly think original battery is better.
KK43 said:
Got it, but I meant the current battery is probably just as good quality wise, but more juice is being sucked and at a faster rate.
Here's another way of putting it, do you know of any amoled touchscreen smartphone that runs many apps, WiFi, gps etc etc and lasts several days of regular use?
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That's completely irrelevant. The Legend packs a 1300mAh battery, the Nokia E71 apparently has a 1500mAh battery with the same dimensions.
All he's saying is that it's possible to make a trustworthy 1500mAh battery that would fit the HTC Legend. No one's comparing battery life, we're comparing battery capacity. I don't see how the draining rate of the battery is relevant. A 1500 mAh battery has 15% more capacity than a 1300mAh battery and thus has 15% longer battery life. What's not to understand about this?
Whatever...
So.... after being out for half a year... a extended SLIM battery has not been released yet?? I mean, I know i'm not the most "technical" person in the world.. but honestly?? how HARD can it possibly be??!! doesn't make one bit of sense.... and they still haven't made an OEM battery cover.. with a kick stand??!! ridiculous.. the person in charge of the accessories.. needs to be fired...
sorry just a little rant.. after seeing my friend buy a extended slim 1750mah battery for his EVO.... which is a HD2 replica..... the battery sizes are identical... and I'm not even asking for 1750... 1500mah is all i really need.. if i had an extra 2-3 hours of battery life.. then it would be PERFECT for a full days use
I posted similar thing awhile back with some moronic replies saying that there is not a market for that.
These people, rather, want you to believe that it's better to buy ebay/chinese fakes for $5-10 bucks that, ironically, labeled "1500" or "1600mah"! I dont understand why other phones, with similar form factor to the HD2, manage to get standard size extended battery with the added 200-300mah, but the HD2 only get +70mah (1300mah) from Mugen.
lude219 said:
I posted similar thing awhile back with some moronic replies saying that there is not a market for that.
These people, rather, want you to believe that it's better to buy ebay/chinese fakes for $5-10 bucks that, ironically, labeled "1500" or "1600mah"! I dont understand why other phones, with similar form factor to the HD2, manage to get standard size extended battery with the added 200-300mah, but the HD2 only get +70mah (1300mah) from Mugen.
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hear hear. The thing that annoys me the most is the battery life on the HD2, or rather, the pace on which it drains. The biggest improvement would be a battery with a bigger capacity.
How hard can it be? probably just as hard as trying to fit 2 litres of water into a 1 litre bottle
richo27 said:
How hard can it be? probably just as hard as trying to fit 2 litres of water into a 1 litre bottle
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i think thats a slight overexaggeration... first of all take the evo for example.. they managed a standard size 1700mah battery... you're telling me our battery with practically the same size as the evo.. can't even get a 1500?? no sir this isn't a technical issue.. trust me.. this is just bad marketing on the hTC HD2 part.. thats all.
Are the physical dimensions of the battery the same?
Maarten_0031 said:
hear hear. The thing that annoys me the most is the battery life on the HD2, or rather, the pace on which it drains. The biggest improvement would be a battery with a bigger capacity.
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Nope - biggest improvement would be a device that uses much less energy, so a battery with a capacity of 250mh would be enough for two days full of work.
the largest capacity for the stock battery size is so far mugen at 1300..
but its very very expensive.. and comes with only 70mAh more juice.. wth man..
I have designed a solution for the short battery life of the HD2, it solves a couple of problems ive seen complaints about and will increase the battery capacity beyond anything available currently, and its not and ugly lump im hoping to put it in production very soon, the only compromise is extra thickness of the phone...
Bright.Light said:
Nope - biggest improvement would be a device that uses much less energy, so a battery with a capacity of 250mh would be enough for two days full of work.
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My problem with this is that manufacturers start making power management decisions for me. They start reducing power output from wifi and bluetooth, they restrict standards on things like wifi (allowing 802.11g but not n), they limit screen brightness, etc. All in order to say that their unit last longer on a single battery charge.
I'm sure that the technology is there to have processors that run twice as fast as ours yet still fit in the HD2 device. They just can't make one that will last on such as small battery for more than 10 minutes. That's fine with me. Make it and let the user select how fast the processor runs.
They won't do that because they would still have to advertise that the battery lasted 10 minutes and there would be consumers out there saying, your device needs to use "much less energy, so a battery with a capacity of 250mh would be enough for two days full of work."
Just started using a mugen power extended battery and am getting a lot more use out of the handset, haven't cycled it the recommended 5 times either, so expecting a little more juice as time goes on!Recommended!
Hi judd5000
Good to hear !
I have ordered the 1800 mAh battery from Mugen, hope it will arrive soon.
As soon as I get it performing properly after the correct cycles, I will post my feedback along with phone settings used.
cyb0tr0n
i hope this battery would fix the problem of original battery
I got mine yesterday - even the residual power in it got me through a whole night with GPS on and two email accounts checking once an hour. So far today after first full charge the battery has dropped a little since this morning but is still at about 80% and has been so for at least 2 hours. This is with light to medium use, though I did go out for an hour or so and had to switch from wi-fi to 3G, and I live in a terrible signal area that kills batteries, so so far I'm impressed. If it improves even more with a few more conditioning cycles I think 2 days will be within reach.
Also, and why this would be I have no idea, I seem to have a slightly better signal reception too. This is probably coincidence though, so don't take too much notice of it!
Is this the same size as the original battery or is it bigger? If so do you need a new back cover?
mb76 said:
Is this the same size as the original battery or is it bigger? If so do you need a new back cover?
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exactly the same size
Got just over 30 hours from mine today with light to moderate use, mainly on WiFi but in a bad signal area. And that's just the first charge/discharge cycle so there's more to come. Impressed!
OK, final verdict - the Mugen 1800 mAh battery is much better than the 1300 mAh stock battery and well worth the investment. Once properly conditioned, 24 hours with moderate to heavy use was easily done (GPS on, 2 email accounts on hourly check, an hour or so of newsgroup reading, 1/2 an hour of gaming, an hour or so of web browsing, 1/2 an hour or so on the marketplace, a fair bit of texting and a 20-min phone call in a bad signal area). With fairly light use (email accounts on manual, a few texts, just the occasional 5-min check of Twitter/Facebook and brief web browsing), I've managed over 40 hours and I suspect 2 days is well within possible - I tend to leave GPS on out of habit and have brightness on auto. Knock the GPS off and have brightness on low and that'd save a bit more again.
Obviously having a smartphone you don't use a lot of the functions of isn't ideal, but if you go away for a long weekend and forget your charger, it's good to know you can make it through (if you have the right battery!).
just ordered one.
How much is it?
Sent from my 7 Mozart T8698 using XDA Windows Phone 7 App
I bought a 2430mah Battery and han have everything turned on all day. Heavy usage equals 15-20 hours of Battery life. Will update name... I paid 22gbp british currency. http://www.ebay.com/itm/13054206017...X:IT&_trksid=p3984.m1497.l2649#ht_2154wt_1113
Sent from my 7 Mozart T8698 using XDA Windows Phone 7 App
where can I get one of these from in the uk do you know?
Ebay
metalgearslug said:
where can I get one of these from in the uk do you know?
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As I wrote before... it worked wonders for me:
http://www.ebay.com/itm/13054206017...X:IT&_trksid=p3984.m1497.l2649#ht_2154wt_1113
I should mention that charging time is long... I recon at least 2 hrs for from 0% to 100%.
Is there a way to get a performance comparison between the Mugen battery and this GOLD 2430MAH Japanese one? Thanks
2430mah? so almost DOUBLE the capacity of the original battery, but the same size?!
That's actually physically impossible. If you're lucky this fake "Gold" battery is 1600-1800mah.
50% better than original...
i9o said:
Is there a way to get a performance comparison between the Mugen battery and this GOLD 2430MAH Japanese one? Thanks
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My 2430mAh is no match for a two day mugen, but still quite a bit better than the original. In my case appx 50%.
you're probably right
Aphasaic2002 said:
2430mah? so almost DOUBLE the capacity of the original battery, but the same size?!
That's actually physically impossible. If you're lucky this fake "Gold" battery is 1600-1800mah.
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guess you're right, but now I have a Battery that laste a full day.
the_Enlightened said:
guess you're right, but now I have a Battery that laste a full day.
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with the mugen i can do 1.5 or 2 fully days
I am afraid all these batteries are produced in Asia, Mugen included. If we assume the Japanese one is truly Japanese, perhaps this latter is better, but I doubt it, due to its unrealistic capacity.
Given the obvious environmental concerns related to the manufacture of batteries in China, I certainly prefer to wait until some good alternative is provided by a German company (usually very efficient in these jobs). ATM there's nothing convincing on ebay and amazon.
If you are in Europe this involves in addition having batteries shipped within the EC and no extra customs' costs!
i9o said:
I am afraid all these batteries are produced in Asia, Mugen included. If we assume the Japanese one is truly Japanese, perhaps this latter is better, but I doubt it, due to its unrealistic capacity.
Given the obvious environmental concerns related to the manufacture of batteries in China, I certainly prefer to wait until some good alternative is provided by a German company (usually very efficient in these jobs). ATM there's nothing convincing on ebay and amazon.
If you are in Europe this involves in addition having batteries shipped within the EC and no extra customs' costs!
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Just take some research,u will find That mugen is the biggest manufacturer of battery
& every stock battery is from china because all the company build them there for Save money
so if u wait for an european battery well good luck ^^
Just keep in Mind to not buy a batterry on eBay,it can be dangerous
Disclaimer: I know there is already another thread on Mugen HD2 Extended Battery 2,600mAh, but I would like to state that this is an official review since Mugen has provided me with a review unit to debunk the many bad comments given concerning their battery quality. This you can read from http://forum.xda-developers.com/showthread.php?t=1294124.
[BACKGROUND]
I have contacted www.mugen-power-batteries.com directly after hearing many comments concerning their false claims. I was surprised that they actually responded by providing me a review unit of the 2,600mAh. It is now on the way.
My review unit will be coming in about 2 weeks time. I will try to conduct an extensive review to determine the actual worth of the battery and whether they work as advertised. I will be conducting a few tests specifically on the battery, as objectively as possible. This would cover video playing, 3G usage, full valuation of the battery charge (using battery widget pro) to name a few.
If you would like a particular test to be conducted on the battery, please state and give a few ideas below. I will be comparing them against the original 1,230mAh from HTC.
I think as faithful users of our HTC HD2, I would really want to get the best extended battery. If this provides even 90% of the advertised capacity, it is already worth the money. Anything less would be pointless.
Thank you.
Larger cell will indeed be good but 2600mAh will be higher than reality as Mugen have admitted this already in a round about way on responses to another testers results.
A new standard HTC cell & new standard size 1500mAh Mugen is the test that needs to be done.
Any chance of a sample 1500mAh review unit ?
Mister B said:
Larger cell will indeed be good but 2600mAh will be higher than reality as Mugen have admitted this already in a round about way on responses to another testers results.
A new standard HTC cell & new standard size 1500mAh Mugen is the test that needs to be done.
Any chance of a sample 1500mAh review unit ?
Click to expand...
Click to collapse
I will try to get a 1,500mAh review unit after this one is done Oh, have Mugen admitted to that? Would be good if you can provide me with the link. Thanks!
Cant Wait for the review
Im Planning on getting one myself a 2,600mAh
BOOKMARKED
erlern said:
I will try to get a 1,500mAh review unit after this one is done Oh, have Mugen admitted to that? Would be good if you can provide me with the link. Thanks!
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This was response to Dougs battery testing.
Not in any way slating Mugen but the mAh ratings marked on their cells are higher than what would be achieved in any lab test.
1500mah is the one I would love to see tested side by side with genuine cell in device & technician mAh testing.
Mugen cells are ok quality but for the asking price we need total transparency on actual cell capacity ...
I have no idea how good that battery is, but I bought this one about 6 months ago and it's working very well, doesn't gain much heat and it doesn't discharge itself much. Average battery consumption in standby is 6mA. All I can do is recommend you guys this one. And cover is really strong. And it's "bit" cheaper than Mugens
[email protected]/MB434B/review_MB434B.html
looking forward to seeing your test results...i just got me a 2400mAh battery and it lasts me about 15hours under heavy use...
Hi guys,
Sorry for the silence... I just received the battery today! Give me some time to get it charged and conditioned for testing
Let me know what else you would like me to test it with.
Display use is interesting for me, such like browsing etc.
Open a browser with some ads or something and look how long the Battery live..
My Galaxy SII gets there 4,5h.
Start the Match
Idc really care about that battery. I know its fake, but is there any real battery that's better then the original stock? 1400, 1450, 1500?? Not the fat ones with the kickstand
Just an update, I am still conditioning the battery. The first charge/recharge was really pathetic, at 12 hours before it was flat (moderate-heavy use). The second charge/recharge is much improved, I am on 25 hours on (moderate use) with 25% left (taking pictures, listening to music, games, surfing, etc.). I will begin formal testing after 4 full runs to find the optimum condition.
One things I have to say is that the ROM does play a high factor. I was on Dorimanx 3.0 and somehow the governors for oc/uc is not working properly as I kept getting some high drainage. Once I reverted to 2.9, the drainage was gone and it seems to sip battery at a much, much lower rate.
So many factors!!!!
By the way, I really like the battery cover. It is not cheap like the other China made products (unlabelled). I have already 4 different covers, and while I would prefer a metal back cover, this is the 2nd best
Can You please also start the heavy display usage test?
And put some pics please
Greetings
erlern said:
Just an update, I am still conditioning the battery. The first charge/recharge was really pathetic, at 12 hours before it was flat (moderate-heavy use). The second charge/recharge is much improved, I am on 25 hours on (moderate use) with 25% left (taking pictures, listening to music, games, surfing, etc.). I will begin formal testing after 4 full runs to find the optimum condition.
One things I have to say is that the ROM does play a high factor. I was on Dorimanx 3.0 and somehow the governors for oc/uc is not working properly as I kept getting some high drainage. Once I reverted to 2.9, the drainage was gone and it seems to sip battery at a much, much lower rate.
So many factors!!!!
By the way, I really like the battery cover. It is not cheap like the other China made products (unlabelled). I have already 4 different covers, and while I would prefer a metal back cover, this is the 2nd best
Click to expand...
Click to collapse
I have a few questions which i hope you dont mind answering:-
1. How did you recondition the battery?
2. Does your kernel recognise the battery's full capacity or do you do a battery pull then it jumps back up significantly? Im facing this problem at the moment...
thank you in advance!
how long will the battery last for heavy use like playing 3d games?this is important as i use my phone for gaming most
damnshah said:
I have a few questions which i hope you dont mind answering:-
1. How did you recondition the battery?
2. Does your kernel recognise the battery's full capacity or do you do a battery pull then it jumps back up significantly? Im facing this problem at the moment...
thank you in advance!
Click to expand...
Click to collapse
1) I conditioning it by charging it overnight for 6-8 hours and then depleting it until it powers off (Actually, this is based on the instructions they gave in the parcel). I need to do it 5 times. Once done, I will be able to charge and stop charging when the indicator hits 100%. I basically use Battery Widget Pro (they have a feature called 'calibration'). Apparently, the battery itself states that it is 2,300mAh, but I think this is not accurate (hence the testing). You will know that the battery is fully charge when the indicator goes down to 0 (zero) mA (shows that the battery is not receiving any more charge).
2) Most cheap batteries have wrong indicators (e.g. temperature detection is not working, no indication of battery capacity). And yes, they suffer the need to 'pull the battery out first' before an additional amount is given. I bought one a while back, apparently one that has 3,000mAh. My observation is that the indicators are really gone. In fact, it will slowly go down to 50%, after which if you pull, it will give you 70%, once it goes down to 15%, it will last for a long while (30 minutes of browsing over 3G) before going down to 14%. Using that battery, I have been able to last 31 hours of moderate use (1 hour of music, 1 hour of gaming - not 3D, a few hours of browsing and a lot of photo taking). It costs only USD12 (thereabouts), which to me is the best deal yet. Down side of that battery is the very poor back battery cover. Using Battery Widget Pro (you have to charge fully and discharge until it shuts down and charge up again continuously), I got an estimated charge capacity of 1900mAh. Not bad don't you think?
The Mugen 2,600mAh easily matches my fake 3,000mAh one. The question is by how much. Sorry for the delay but my HD2 is my daily phone. So, I cant conduct full test like Engadget and other websites. But I'll do my best
relldroid said:
Idc really care about that battery. I know its fake, but is there any real battery that's better then the original stock? 1400, 1450, 1500?? Not the fat ones with the kickstand
Click to expand...
Click to collapse
Try Andida batteries. I had the 1600mAh one and it was slightly better than the original (giving me about 1300mAh). I had that a while back.
After much charging and recharging, I can confirm that the battery has about 2,200+mAh. See the attached images to see the estimated calculation using Battery Widget Pro.
Charging takes about 2 hours plus using the wall charger. The last 2% takes the longest.
As per request I ran 2 emulation apps (sorry, no 3d games), fpse & n64oid. The former ran Strider 2 while the latter ran Legend of Zelda: Ocarina of Time. Do note that I have overclocked my phone to 1.6ghz. All in all, it ran for 4.5 hours with 15% battery left. I'm pretty sure it could have clocked 5hours easily. I think that it is a good performance for 2.2kmAh battery don't you think? See the images below for a read of what other apps I was running. I managed to deplete the whole charge after nearly 10 hours of extremely heavy usage!
What do you guys think? Okay?
Sent from my HD2 using xda premium
[Not the Mugen 2,600mAh Battery]
As an aside, I took and strip out the cheap battery which I bought for USD10, which claimed a 3000mAh, which only was about 2000mAh (+/- 200mAh) and took some photos of it. I can understand these extended batteries better. I am not an electronics person, but this would explain why it takes a restart to 'recognise' the 'remaining' battery on our devices.
Notice that they are basically two lower capacity batteries which are slapped together with the thin connectors and wrapped together with scotch tape.
I am not sure whether Mugen's the same, since it does not suffer from the 'restart-phone-to-get-additional-battery-reflected' scenario. However, I wonder whether there are any manufacturers who would just manufacture a genuine 2000mAh without merely slapping two products together (like in this picture). In light of this, it is much better to carry an external battery charger (anything more than 6,000mAh around!).
Anyone with electronic expertise want to comment on the pictures, please do.
Opps, forgot to add the photos of the battery and the battery cover which I mentioned. I find that after the first fall (yes, I tend to have accidents with my HD2 ... ) there is a slight creeking sound with the battery cover (nothing is chipped though). It is a rubberised battery cover, unlike the original metal cover. Still, the feel of the cover is great to the touch.
I am no longer using this device, but my dad is! It still works and have survived loads of damage... mostly dropping the device with the battery cover!