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Review: 2000 mAh Battery for Mytouch 3g

So one of the biggest flaws of the early android phones (in my own opinion) has been battery life. One of the quickest and simplest options for early adopters is to buy an extended battery. So that question remains where can someone get a reliable battery? Well after perusing forums and coming to the conclusion that this field seems to be relatively untouched, I decided to splurge and buy the 2000 mAh battery by Seidio.
Normal retail price is 60 dollars but I found mine on mobilecityonline for 30 dollars
http://www.mobilecityonline.com/wireless/store/productdetail.asp?productid=25418
Note: I am currently running cyanogen 5.0.8 stable with the community hero mix theme
First impressions: After unpacking the battery, it is THICKER but that is to be expected. It comes with a replacement cover which has a matte rubbery feel to it. Feels good
WARNING: The battery cover will not accommodate models with a 3.5mm jack, so if you want to use this battery you may need to do some tinkering
First day of full use : After putting the battery through two charge cycles I noticed a GREAT improvement on battery life. Starting at about 11AM with some light browsing and youtube, battery was still in good condition. Afterwards a few hours of mild calling and texting and finally some more youtube and browsing at about 7 or 8 along with plenty of texting. By midnight the battery was still at 75 percent and lasted through the night and allowed me to watch some more videos until about 3 in the afternoon.
That's all I can say about it so far after 3 days of use.
Definitely a battery to consider if you need a little more life in your phone from day to day, Follow up review, video and pictures coming soon!
Feel free to leave comments and questions, and if you decide to buy one give us your thoughts!

well im looking into it now, and just to make sure it will work with my htc magic from rogers with no 3.5jack, right?
because for 30$ its worth it to have better battery life IMHO

That's my issue is that I'd love to buy an extended battery for my 1.2 but I haven't seen any battery covers that account for the headphone jack. I'm sure you could rig it with a Dremel or something.

sike89 said:
well im looking into it now, and just to make sure it will work with my htc magic from rogers with no 3.5jack, right?
because for 30$ its worth it to have better battery life IMHO
Click to expand...
Click to collapse
Yes it should work just fine
zmattmanz said:
That's my issue is that I'd love to buy an extended battery for my 1.2 but I haven't seen any battery covers that account for the headphone jack. I'm sure you could rig it with a Dremel or something.
Click to expand...
Click to collapse
It seems easy to cut a hole out for the 3.5mm jack, I'm sure you could do it fairly easily

it just hit clearance for $19.99. Really wishing it had the option to choose a white cover. I may get one anyway though.

Seems they just cleared out their stock of it, anyone out there get one from mobilecity before they sold out?
Have no fear though, theres still plenty of vendors you can get this product at (for a slightly higher price, but I think it's worth it)

is the battery's size bigger then regular mytouch 3g?? or same???

satanic666 said:
is the battery's size bigger then regular mytouch 3g?? or same???
Click to expand...
Click to collapse
As far as I understood the battery is thicker then the stock one, so the original cover won't work.
They have a lot of different batteries on aliexpress DOT com.

Battery solution for the HD2

Many people complain about the short battery life of the HD2. Many complain about the bulkyness and uglyness of the extended batteries on offer. Many dream that a larger than stock capacity battery of the same size as stock will become a reality.
I am interested to know what is important for HD2 users, you cant have slimness with larger battery capacity, this is a law of physics. So tell me, if a solution came about that would significantly increase the battery capacity (beyond 2400mah), look good (not a lump on the back of the phone), provide a flat surface on the back of the phone, allow you to use your spare stock size batteries without the need to swap them all the time, with the only real compromise of doubling the thickness of the phone, would you buy it for a reasonable price (less that $50)?
I guess my basic question is, whats more important, slimness or capacity (lots of capacity I mean too, 3000mah+)?

I must say that I have never complained about the battery life when using Windows Mobile, even with heavy use I could get 2 days of life from it.
BUT since I'm now on a daily basis with Android, I must say that this is a problem, I can barely get to a full day with moderate to heavy use.
Now about you question, I WOULDN'T USE IT.
I like the size and feel of my HD2 (TMOUS one) and it happens that I have two extra batteries (bought because of android) even never having to use them yet I do change them and charge outside of the phone for easiness of not having to be near a wallplug everytime.
I just put those in the back of my phone to have an ideia of the size it would be with such an adapter. I would be inpratical to have this, so deep and big. It takes the easy and sleek feel of the HD2, to a bulky Kaiser (or more) stile.
Just buy a new battery, and if needed change it ONCE a day, ONE reboot in some sporadical day is better than a ALWAYS BIG phone wich is used to the full length of battery life rarely. .
My two cents.
Santroph

santroph said:
I must say that I have never complained about the battery life when using Windows Mobile, even with heavy use I could get 2 days of life from it.
BUT since I'm now on a daily basis with Android, I must say that this is a problem, I can barely get to a full day with moderate to heavy use.
Now about you question, I WOULDN'T USE IT.
I like the size and feel of my HD2 (TMOUS one) and it happens that I have two extra batteries (bought because of android) even never having to use them yet I do change them and charge outside of the phone for easiness of not having to be near a wallplug everytime.
I just put those in the back of my phone to have an ideia of the size it would be with such an adapter. I would be inpratical to have this, so deep and big. It takes the easy and sleek feel of the HD2, to a bulky Kaiser (or more) stile.
Just buy a new battery, and if needed change it ONCE a day, ONE reboot in some sporadical day is better than a ALWAYS BIG phone wich is used to the full length of battery life rarely. .
My two cents.
Santroph
Click to expand...
Click to collapse
You get nearly a full day with moderate to heavy use? Since I put android on I barely get a full day with little use

Interesting, considering the amount of complaining about the battery life, slimness is still more important. I can see why these fake 1600mah batteries are selling like hot cakes.
Thanks for the input! Keep it coming, id love to hear everyone's 2 cents on this issue.

Extended batteries make the beautiful Hd2 look like crap.
To give an example: If you could bring a bulky backpack of energy drinks with you all throughout the day to give you more energy BUT you had to wear that bulky backpack 24-7 (even at the office at work, while your going to the bathroom, EVERYWHERE) would you?
I sure wouldn't. I don't care how much more energy I would have throughout the day...
The only people who need extended batteries are people running Android since it sucks down the battery like crazy.

battery extender a better solution.
i have a gum pro 4400mAh battery extender. it can charge the hd2 2.5x from flat and since it can deliver 1A, you can use the hd2 while it's being charged. its small size and the fact you don't need to power the phone down to top it up make it a more practical solution for me than any extended battery.

I like the slimness of the HD2 and I intend to keep it that way.

the slimness is just perfect in pocket...the hd2 is huge, but thankfully slim. if it would be both, i couldnt take it with me
and for me the extented one looks horrible..and i'm just a WM-User, so i have no batterydrainproblem
DN41

Does anyone know if it is possible to power the HD2 from the micro USB supply while I swap batteries. I don't want to have to do a soft reset which loses what you are doing. But I'm worried that without the battery to absorb the power there is a risk of damaging the circuits?
I don't want to just try it because I already blew my main board by powering the USB through a cheep adapter and a Nokia charger that supplied too much power and had I to get it repaired/replaced. I'm hoping someone already knows. :???:
Sam

geon106 said:
You get nearly a full day with moderate to heavy use? Since I put android on I barely get a full day with little use
Click to expand...
Click to collapse
Get SetCPU and Autokiller. Make profiles with setcpu, and set autokill on agressive mode. Your phone should last more than a day with little use.

I was using my original battery for normal everyday use
and the extended 2400 ah with kickstand for times when I knew I would have heavy or extended use. Next thing I knew I was just leaving the extended in all the time. It goes days on a charge and is not noticeably bulkier in my pocket and I am slim and wear jeans. Actually feels easier to hang on to. Fits the hand better and all that juice is there whenever I might need it.

i voted battery capacity :
BC if u ran outta battery then the slimness will become just overweight.
but if u have battery capacity then it worth it !
(Just a Point Of View)

I bought an extra battery off of ebay for $5.
The Hd2's battery is small enough to keep it in my wallet.
Why would anyone not keep a spare battery in their wallet/pocket and instead use a bulky battery case?

HD2 outdoor
I know, one can look crazy taking out HD2 somewhere out there in woods, but i do like wild hiking, and i do use GPS occasionally for getting directions. And My HD2 with Garmin well serves for that. For the battery - in my case i care about capacity, as my backpack and front pockets have enough space for "bulky" extension.
For "going green" - I have a wind charger (a device which charges itself when you bike using the power of wind, and can be used as a charger for mobiles), but it can charge the phone only up to 60%. So the spare battery for 3-4 days walk is a must have for my case.
My point is - It really depends on your needs. I am pretty sure extended thickness is somewhat a burden in everyday life.
Cheers
Correction: The wind charger sucks! Do not buy it. It has major flaws which render the device not worth the price.

2600mAh Extended Battery Review(VIDEO)

Hey, guys this battery is one of the newer ones found in Ebay. I took a stab and went for it as it was only 10 bucks. As you can see in the video this Quality of the construction is very good for a plastic cover. The cover and the device is flush on the sides, which is is perfect for me and ITS THINNER THAN OTHER ONES THAT I HAVE SEEN ON XDA. KICKstand is great too.
Take a look at the video.(incomplete due to the 256mb SDHC card )
http://www.youtube.com/watch?v=sPQ3zZLH-R4
part 2 http://www.youtube.com/watch?v=U66JxD75bWk
Performance: Still testing the battery. Not sure how to, but I will recharge the battery with the device shut off and open up android to see how good the battery actually is. Seems like its using only the first half of the battery(16hrs with 80% left - I was listening to music, texing my cuz who was at bestbuy line for 55" LED Samsung, while I was at sears waiting in line till 1am . My cuz got the tv for 1500 so ) But I will try to recalibrate it.
The interesting thing was, when i first tested it, it was with mdjeejay 2.3 clean with NON EXTENDED Kernel. So, Im not sure whats going on there. (MAY BE ITS A FAKE)
But I kinda need help about testing the battery. Cause Im not really sure how to recalibrate it.
10.99+1.99
LINK: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rt=nc&nma=true&item=250721652435&si=JMrYADEdlnpBwpyJ35JhNcj6PUM%253D&viewitem=&sspagename=STRK%3AMEWNX%3AIT
UPDATE: This battery works with any kernal available, whether or not the kernel supports extended battery does not seem to matter.

May i have link to it?
Thanks

Link added.

I have both the official and this 2600mah/2400mah (advertised elsewhere) with kickstand. The kickstand will fall apart after a short time... The hinges that keep them in place are very weak. Mine broke in less than a week.
The battery life is very good and doesn't add much thickness to the phone. I would say the total thickness is about 15mm compared to 11mm of the phone without the extended battery. I do prefer this battery in some sense to the official one with kickstand as it is quite a bit thinner (guess about 18mm) however HTC OEM has a "real" kickstand...

ez2remember said:
I have both the official and this 2600mah/2400mah (advertised elsewhere) with kickstand. The kickstand will fall apart after a short time... The hinges that keep them in place are very weak. Mine broke in less than a week.
The battery life is very good and doesn't add much thickness to the phone. I would say the total thickness is about 15mm compared to 11mm of the phone without the extended battery. I do prefer this battery in some sense to the official one with kickstand as it is quite a bit thinner (guess about 18mm) however HTC OEM has a "real" kickstand...
Click to expand...
Click to collapse
Can I see a picture of the broken kickstand?

ez2remember said:
I have both the official and this 2600mah/2400mah (advertised elsewhere) with kickstand. The kickstand will fall apart after a short time... The hinges that keep them in place are very weak. Mine broke in less than a week.
The battery life is very good and doesn't add much thickness to the phone. I would say the total thickness is about 15mm compared to 11mm of the phone without the extended battery. I do prefer this battery in some sense to the official one with kickstand as it is quite a bit thinner (guess about 18mm) however HTC OEM has a "real" kickstand...
Click to expand...
Click to collapse
I have the HTC extended battery... Can these extended batteries be used with the HTC extended battery case??? I just need another extended battery... Want to use my HTC case and kickstand????

i doubt if you can buy just the battery.

Tech Savy said:
I have the HTC extended battery... Can these extended batteries be used with the HTC extended battery case??? I just need another extended battery... Want to use my HTC case and kickstand????
Click to expand...
Click to collapse
Yes, I can use the HTC case with these 3rd party batteries but not vice versa as the HTC extended battery is thicker.

Another problem and mentioned on other threads the battery acts like 2 batteries. The controller is el-cheapo. Once you run out of juice, remove the battery and re-insert then you get another 50-60%+

but i have heard or read somewhere that you could calibrate the battery somehow to make android show the whole battery percentage. Any idea how?

Extended Battery?

I found these going for $30 including back-cover..
1) why are they so cheap?
2) if they are really are 3500 mAh, why isn't it included with by default?
3) if it does have 3500 mah, does it have 2x the capacity?
4) does the back cover have no logo's?
Thanks

do you have a link to the site? or a brand at least?

These usually advertise full capacity and in the fine print they say battery charges up to 80% or so of capacity. Essentially 3600mAh advertised is to be read 2800mAh. So don't expect 2x battery life. And this, given you get a reputable battery not "original" brand for example often seen on ebay for about that price. You'll have to be fine phone looking like a brick too.
Be ready phone not to read the battery properly too. Anything beyond the BF6X will wack the battery gauge.
Sent from my XT860 using Tapatalk

This is the one i'm talking about
http://www.ebay.com/itm/Brand-New-3...770038?pt=PDA_Accessories&hash=item2a14c03ff6
Top-rated seller
Member id hi-etech ( Feedback Score Of 356572)
99.2% Positive feedback
Click to expand...
Click to collapse
or this (looks like the original)
http://www.ebay.com/itm/OEM-MOTOROL...184513?pt=PDA_Accessories&hash=item43aa225101
BF6X

Just saw this picture.
Nevermind hahaha
Does the official 19xx mAh battery also make the droid 3 thicker?

DoubleYouPee said:
Just saw this picture.
Nevermind hahaha
Does the official 19xx mAh battery also make the droid 3 thicker?
Click to expand...
Click to collapse
Yea, definitely go with the 1960 (or is it 1980? Can't remember, but I have it in my phone). It's literally about 0.5mm thicker, and so it comes with a custom battery cover. If you snap on the standard battery cover, it just barely fits (very tight squeeze), but I'd recommend using the case that comes with it (it's literally impossible notice a difference in thickness). The only reason it's slightly bigger even though the battery is barely bigger than the stock one is because the extended battery tends to expand a bit more when hot, so you need just a tiny bit more room.
I get about 30% extra life with the extended 1960 battery in comparison to the stock one.
Hope this helps.

I've bought the 3500 mah battery from ebay. Only ten dollars when I bought it. Battery life will last a bit more than seven hours with the following running (using Steel Droid 3.0 by the way):
Music (playing One Mic by Nas on repeat 320 kbps mp3)
Angry Birds (just sitting on the first level zoomed out as far as possible)
Max Brightness
Maps and navigation (directions to Walmart by foot)
Used battery graph to monitor until battery died
As the person said above me though, the battery reports incorrectly
After the battery meter stayed at one percent after the fifth hour
I know I don't have to worry about my battery life anymore though
Phone hasn't died on me since I've done the above benchmark
Sent from my DROID3 using XDA App

Lyxdeslic said:
Yea, definitely go with the 1960 (or is it 1980? Can't remember, but I have it in my phone). It's literally about 0.5mm thicker, and so it comes with a custom battery cover. If you snap on the standard battery cover, it just barely fits (very tight squeeze), but I'd recommend using the case that comes with it (it's literally impossible notice a difference in thickness). The only reason it's slightly bigger even though the battery is barely bigger than the stock one is because the extended battery tends to expand a bit more when hot, so you need just a tiny bit more room.
I get about 30% extra life with the extended 1960 battery in comparison to the stock one.
Hope this helps.
Click to expand...
Click to collapse
Thanks. Does the cutstom cover have the verizon/google logo? Is the cover of the same quality as the standard one?

Extended batteries (3500mah in this case)

Well... so far I've ordered a 3500mah extended battery from Hong Kong.. but as I believe this will take rather a long time to get here... I've ordered another one from the UK as well from ECELL, which apparently has a silver extended cover.
I'm well aware that these are likely cack batteries and I have a plan for that
Basically I'm hoping that whichever one I consider to be the worst will either die on me... or I will simply end it's life prematurely. I am going to cut open the battery (Carefully!) and try to replace the cell's with two Genuine OEM 1500 mah batteries, for a true 3000mah. I bit elaborate but I think it should be possible as long as I cut in the right places.
EDIT: I found genuine LG batteries for about £8.50 each plus about £5 postage, so will order 2 batteries for around £22. They are special order though, so will take 14-28 days. (I am also getting them to confirm the capacity is defo 1500mah, as no point buying them otherwise.)
Update: Images in post #29 : http://forum.xda-developers.com/showpost.php?p=23120430&postcount=29

Well.. I was getting a little impatient... so when I was really tired (and may just a little to drink), I ordered one from ECELL on ebay. It had a silver cover and a 3600mah battery (We all know it isn't that much), and was listed for the 2x P990. Turns up.. it's for the LG Optimus S :-( Bummer. Just trying to get a return/refund.
So... experiment is delayed somewhat.
Update: Two LG OEM batteries have been ordered ; The incorrect extended battery sent back ; Still awaiting the HK Extended battery. Bizarrely I thought I actually ordered a 2nd UK based battery.. but I was so tired I think I forgot to do it lol. Can't wait to have a play with these

Refund form ECELL given without issue Have now received the 3500mah battery, and just running that to see how thing's are with it. I am waiting on the two OEM batteries to turn up from LG before I can start modding this extended battery.
Since I also have a bigger case now, I am going to look to see if I can play around with an external antenna as well.. and maybe fit a bigger antenna inside the expanded case. With that in mind I have ordered two antenna's of different types to see which one fits (expensive.. but then at least we all know )

Sounds really interesting.. keep us updated please!
Sent from my Optimus 2X using xda premium

Scougar said:
Refund form ECELL given without issue Have now received the 3500mah battery, and just running that to see how thing's are with it. I am waiting on the two OEM batteries to turn up from LG before I can start modding this extended battery.
Since I also have a bigger case now, I am going to look to see if I can play around with an external antenna as well.. and maybe fit a bigger antenna inside the expanded case. With that in mind I have ordered two antenna's of different types to see which one fits (expensive.. but then at least we all know )
Click to expand...
Click to collapse
i got the 2400Mah battery(2 days of usage) i'm looking forward for you're results
specially the modded one pictures will also be great if u can.
thanks!

Apparently the LG batteries have been dispatched now, so should get them within a few days. Only annoying thing is that even LG were unable to confirm whether these batteries I'm getting are 1500mah. I will be gutted if they are not lol.
btw.. you should see my desk at present at home. I have about 5 phones, four of them in bits awaiting tinkering, LED bike lights (all modified), circuit boards from laptops everywhere, reparing a 4x 18650 battery pack + routers etc lol. And I just realised that I actually don't know where my soldering iron is ROFL. Must dig one out.
Anyway... I'm looking forward to it and if I can get it working, I'll put up pics etc. I'm very interested in trying to get the temp sensor working (although I realise it may only work for one of the batteries.).
P.s. as for extended cases and covers I bought this w w w.ebay.co.uk/itm/Clear-Black-Trim-Rubber-Case-Cover-LCD-Film-Pro-LG-Optimus-2X-G2X-/180782656771?pt=UK_MobilePhones_MobilePhonesCasesP ouches&hash=item2a177c6d03 and then cut out the back clear part. It's not a perfect fit, but it will work for the moment (Buy at your own risk.. I actually stretched mine too much when getting the clear part out).

Genuine LG batteries have just arrived about 30 seconds ago. They are 1500mah
So with the delivery charge added in they were £11.04 each (£8.49 each without delivery charge). So if you ordered more it would be less due to the one time delivery charge of £5.10. Not bad for a 1500mah genuine battery! Batteries dated 10/09/2011.

Scougar said:
Genuine LG batteries have just arrived about 30 seconds ago. They are 1500mah
So with the delivery charge added in they were £11.04 each (£8.49 each without delivery charge). So if you ordered more it would be less due to the one time delivery charge of £5.10. Not bad for a 1500mah genuine battery! Batteries dated 10/09/2011.
Click to expand...
Click to collapse
Sounds good so will u start Modding them now?
Sent from my LG-P990 using XDA App

shpapy said:
Sounds good so will u start Modding them now?
Sent from my LG-P990 using XDA App
Click to expand...
Click to collapse
Yes. I've now ordered a second "3500" mah battery so I have a spare cover and shell in case I **** anything up. I am just trying to gauge the capacity of the 3500 battery. On my first run it lastest almost 2 days on stock rom, with a fair amount of use. I would prob say only around 2000mah at a guess though.
I'm just trying to get it to run down again for a 2nd charge now.
Once all that's done, I'll open it up and start tinkering I will have to get both the LG batteries to the same state of charge as well (same voltage level) before hooking them up.)
Bear in mind I've spent £22 on original batteries that I am about to hack open for the cells inside, so there is no going back lol. Pretty expensive mistake if I **** it up relatively speaking.

Scougar said:
Yes. I've now ordered a second "3500" mah battery so I have a spare cover and shell in case I **** anything up. I am just trying to gauge the capacity of the 3500 battery. On my first run it lastest almost 2 days on stock rom, with a fair amount of use. I would prob say only around 2000mah at a guess though.
I'm just trying to get it to run down again for a 2nd charge now.
Once all that's done, I'll open it up and start tinkering I will have to get both the LG batteries to the same state of charge as well (same voltage level) before hooking them up.)
Bear in mind I've spent £22 on original batteries that I am about to hack open for the cells inside, so there is no going back lol. Pretty expensive mistake if I **** it up relatively speaking.
Click to expand...
Click to collapse
no doubt it could be an expensive mistake, but if u succeed which i think you will the results will be probably a 4 day battery. so i think its worth it
i got the 2450Mah battery and it holds about 2 days with medium usage, so im really thrilled about ure test as i dont care about the size of the phone,
if you can share pictures it will be great you can also p.m if u want!!
thanks.
Shpapy.

No problem, will do
I charged the battery again last night, and rapid drained it running bluetooth (nothing connected), some GPS usage and wifi with smartshare running a video across from my NAS drive. In the morning it was down to about 25 percent so tried GPS on cycle to work and then drained it with music and GPS until 1%. Charged it without using it, and it's reporting about 1900mah estimated for the battery. I don't rate the estimator as highly accurate btw, but it's a guide .
I will try to take the battery apart tonight if I can. Not sure on best way to open it though, as I will need to reuse the carcass.

Damn.. was taking it apart and fried the circuit it came with. Unfortunately the metal legs that bring power from either side slipped off and touch the outer shell of the battery, was enough for a small yellow spark :-( oh well. (EDIT: Hmm.. circuit may still be alive actually...)
It's two batteries pressed together with several layers of thin plastic between them, either for insulation, spacing or both. I'm actually pretty surprised the cells weren't isolated better from each other.
Update 1: Well, for the first time.. I just managed to burn myself with electricity opps. These packs are really badly isolated. Shorted it on the tip of my finger... beginning to hurt lol. There are NO ratings on these batteries whatsoever. However, one thing they are is... amazingly well balanced. Just measured them and they are both exactly 3.78V's.
Update 2: The circuit and LG Battery will NOT fit directly into the old casing. There will need to either a mod to the extended casing, or we'll just have to 'go without', and make a casing up. It's looking like it's best to do without using the old battery at all actually, and just wire the two batteries together using the LG circuitry. (Well only one of the circuits).
Update 3: Will dig out the soldering iron tonight and get this double battery running
Update 4: Have VERY BADLY soldered the batteries together and combined battery is now charging in the phone. Due to the excess solder on the sides the battery is not quite proper fit, so I will have to redo it at some point. Really very dissappointed with how awful the soldering is, I will simply HAVE to redo it once this experiment is tested. Any tips on a soldering iron chaps? On the plus side, the one thing I do get is a temperature reading :-D
Tip number 1: Quickly snip the circuit off first and DO NOT let it touch the side of the battery casing, it will short out.
TIp number 2: h t t p://www.technfun.com/pages/article.php?id=22 Excellent guide. Take note of the safety tip!!!!
Points of interest
A) The extended battery is EXACTLY double the width of an LG battery.
B) LG OEM Batteries are made by Sanyo
C) Don't use a conventional soldering iron... it is almost impossible to solder the negative side and you will end up overheating the battery if you are not careful. (Any tips here guys?)

Charge battery up last night, and stayed up wayy too late trying to drain it.
Technique... used the 'flashlight' app to keep the LED on, turned on bluetooth, turned on wifi, and use smartshare to stream a movie (at full screen brightness) to the phone. Played Dungeon Defenders for a while as well at full brighness so hopefully the graphics core would take more power. Battery Temp got as high as 40C under 1400mah draw. Odd thing was that battery widget pro at times reported +25000 Mah(ish), yes PLUS '+', and 25000mah, that's just insane..not sure where it was getting the figures from :-(
7% battery left when I put it down, voltage was 3.550 or very close. This morning, voltage it still had 7% left and voltage had increased to 3.7 ish. Guessing it's because the battery was warm last night when under heavy strain, and now it's relaxed and cooled it's feeling better lol. (Or maybe something else?)
Running gps client down now in attempt to drain the rest before recharging. Ideally want to get it down to 1% before a full charge.

Scougar said:
Charge battery up last night, and stayed up wayy too late trying to drain it.
Technique... used the 'flashlight' app to keep the LED on, turned on bluetooth, turned on wifi, and use smartshare to stream a movie (at full screen brightness) to the phone. Played Dungeon Defenders for a while as well at full brighness so hopefully the graphics core would take more power. Battery Temp got as high as 40C under 1400mah draw. Odd thing was that battery widget pro at times reported +25000 Mah(ish), yes PLUS '+', and 25000mah, that's just insane..not sure where it was getting the figures from :-(
7% battery left when I put it down, voltage was 3.550 or very close. This morning, voltage it still had 7% left and voltage had increased to 3.7 ish. Guessing it's because the battery was warm last night when under heavy strain, and now it's relaxed and cooled it's feeling better lol. (Or maybe something else?)
Running gps client down now in attempt to drain the rest before recharging. Ideally want to get it down to 1% before a full charge.
Click to expand...
Click to collapse
cool progress , can we get some pictures of the new battery?
how were u able to fit it in? i get u got a bigger case but still....
share with us ure images / knowledge its sounds really cool doing.

I basically copied what they had done on the 3500mah battery, and merely connected up the positive to positive and negative to negative terminals of the batteries using thin strips of metal, and only used one circuit from the LG battery. Basically I parallel the batteries to increase capacity.
I used a small spacer to keep the batteries seperated, but thinking about it, I could have use the bodies themselves as the 'negative' but it wouldn't have been a good connection). I then just taped the battery up and use the 3500mah battery sticker to hold it all together.
This really is just a 'prove it works' / prototype, and I will remake it neater, although I may have to buy a better soldering iron.
Pics later.
Note: After charging back up from 1% this morning to 100%, the 'estimated' mah by Battery Widget Pro is 1551mah. This would indicate to me that one battery is not connected properly unfortunately. I'm gonna run the battery and see how long it lasts under general usage. If it lasts only a day and a half, then I suspect I will have to resolder.

I bought a 3500mah half a year back and it wasn't any good. Twice the width but lasts the same as the original one. It'll be good if you could show us some pictures? I may consider making one too!

To be fair the estimated capacity of the 3500mah was around 1800 to 2000 mah. Pretty good considering it came with an extended back cover for under £5. It does seem entirely random though, and I was never comfortable without a temperature sensor.
The work I have done so far is rubbish to be honest. I thought I'd make a better job of soldering. I will have to redo it, as the fit is terrible due to the solder being too big/messy, and the connections are not very or or not working/broken.

Can't wait to see the results.
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For some reason, battery widget pro was recording very high mah draw/drain. I do not believe I soldered the negative terminals well enough. I took it apart and tried to prise a little flap of metal up for soldering, and managed to rip the terminal off the pack. I will do my best to remedy this of course and let you chaps know the result.

I also have the 3500 mAH and I was wondering if it was really giving 3500 mAH. I'm getting about 1.5 days on this battery with moderate usage. Heavy usage I get about a day. I wonder what I'm doing wrong. I think it's supposed to last longer.