Develop Bugs

Correct way to cycle the EVO battery?

Hi can anyone tell me the correct way I should go about charging the EVO when I first get it? I'm getting it tomorrow and want to break the battery in the right way (if there is a right way), let me know!

I don't see how you should go about it in a special way different than every other phone
It's a LiIon battery as all of them, none basicaly needs to be cycled to work efficiently.
Or was this your own way to broadcast that you're getting the device tomorrow to let the rest of us drool in envy?

I definatly will say that the first few charges of the battery do NOT last long at all, battery drains REALLY fast.
This may be placebo, as I know that Android will get more efficient as the OS "settles down"
I always make sure to let it run until the device shuts off by itself before charging. Then charge to full and repeat. I try to do this 5 times, but it helps that I have a hero I can drain with, then charge and always have a full battery in my Evo.

ephestione said:
I don't see how you should go about it in a special way different than every other phone
It's a LiIon battery as all of them, none basicaly needs to be cycled to work efficiently.
Or was this your own way to broadcast that you're getting the device tomorrow to let the rest of us drool in envy?
Click to expand...
Click to collapse
so completely drain it then charge, drain, charge, etc?

lithium ion batteries do not need conditioned ... and actually prefer to be charged frequently (or so I have read). Just do a google search for lithium ion conditioning and almost every reference says that only the older technologies need it.

It's actually the phone that needs to learn the batteries fully charged to fully drained levels. A couple of full charge-drain cycles teaches the battery meter in the phone. Same deal for notebook computer batteries.

ephestione said:
I don't see how you should go about it in a special way different than every other phone
It's a LiIon battery as all of them, none basicaly needs to be cycled to work efficiently.
Or was this your own way to broadcast that you're getting the device tomorrow to let the rest of us drool in envy?
Click to expand...
Click to collapse
it was a way to get you guys to drool!

chazglenn3 said:
It's actually the phone that needs to learn the batteries fully charged to fully drained levels. A couple of full charge-drain cycles teaches the battery meter in the phone. Same deal for notebook computer batteries.
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Click to collapse
* Not sure if this applies to the battery in the EVO as I have never taken one apart yet ***
From what I recall most notebook (if not all) Lithium * batteries have an integrated charging / safety chip on the battery http://www.sbs-forum.org/ that maintains information about the battery level (via SMbus) and charge information. It is this chip that will report the current battery level and will disallow you to charge a battery at a certain point due to safety concerns.
What is common though is that it takes a couple of cycles for the onboard / outboard battery chip to learn the charge level which the host OS will just blindly read for the most part.

condition your battery
When you have a new cell phone battery there is a residual charge left from manufacturing..it may even say it is fully charged but it is a false reading. You need to charge the battery before you start using it for 8-12 hours. Then, use it down to about 25% and charge for another 8-12 hours. Repeat this process for the first 3-5 charges and then your battery will be conditioned.
After the initial conditioning your battery will last the longest if you do not let it run out until it dies. It is best to charge when at 25%-30% capacity.
Good luck!

kphenix said:
When you have a new cell phone battery there is a residual charge left from manufacturing..it may even say it is fully charged but it is a false reading. You need to charge the battery before you start using it for 8-12 hours. Then, use it down to about 25% and charge for another 8-12 hours. Repeat this process for the first 3-5 charges and then your battery will be conditioned.
After the initial conditioning your battery will last the longest if you do not let it run out until it dies. It is best to charge when at 25%-30% capacity.
Good luck!
Click to expand...
Click to collapse
Wow. First off, thanks for resurrecting a thread that's over a year old.
Second, your post is completely wrong. Lithium ion batteries do not need to be conditioned at all. Just plug it in, let it charge, and you are good to go.

They do need conditioning
Sent from my PC36100 using XDA Premium App

bootny said:
They do need conditioning
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
Says who? Lithium ion batteries do not need any conditioning.

Really cuz It took a month for my battery to get 36+ he's because I didn't charge it right ( i use sbc) when I got and with my 3d I get 24+ hrs due to battery conditioning. Say what you will my girl does the same with her iPhone and get 2 1/2 days out of it while another friend of mine didn't and her battery is dead after twelve hours... no dis respect dog but it works contrary to beliefs
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bootny said:
Really cuz It took a month for my battery to get 36+ he's because I didn't charge it right ( i use sbc) when I got and with my 3d I get 24+ hrs due to battery conditioning. Say what you will my girl does the same with her iPhone and get 2 1/2 days out of it while another friend of mine didn't and her battery is dead after twelve hours... no dis respect dog but it works contrary to beliefs
Conditioning works for unknown r
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Click to expand...
Click to collapse
Conditioning works for unknown reasons. Not for the reasons, most people say. And its true lithium ion don't have memory any more so its not nearly as effective to condition. Also where are you getting those results? Those are f***ing insane
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lilman355 said:
Conditioning works for unknown reasons. Not for the reasons, most people say. And its true lithium ion don't have memory any more so its not nearly as effective to condition. Also where are you getting those results? Those are f***ing insane
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Results for the Evo? I use a 2600 mah sprint battery and when I use an eBay battery 3500 mah I get 14hrs max ( weird but it was only $15 for 2)... gonna try seidio next and see how they work... and w the 3d I ( also the 4g) I charge til green then unplug and plug til green ten times as suggested by xda thread that was on miui website only
Sent from my PC36100 using XDA Premium App

Use the search please..calibration methods are tried and true..nothing more to see here..let this thread die as the other poster indicated.
Search for battery calibration. I would copy and past the url's for you but I literally found 10+ threads about calibration methods for the EVO within seconds so it will be super easy for you to read one of the methods and apply for what we now see as perfect results.
As far as I know now, nobody complains about EVO battery life anymore unless they are using something to drain the power, bad coded app, kernel or poorly coded ROM etc. It happens sometimes but usually enough information out there to support fixing the issues once you see them.
Hope that helps and good luck..

waterbound said:
Use the search please..calibration methods are tried and true..nothing more to see here..let this thread die as the other poster indicated.
Search for battery calibration. I would copy and past the url's for you but I literally found 10+ threads about calibration methods for the EVO within seconds so it will be super easy for you to read one of the methods and apply for what we now see as perfect results.
As far as I know now, nobody complains about EVO battery life anymore unless they are using something to drain the power, bad coded app, kernel or poorly coded ROM etc. It happens sometimes but usually enough information out there to support fixing the issues once you see them.
Hope that helps and good luck..
Click to expand...
Click to collapse
Thank you!
Sent from my PC36100 using XDA Premium App

Defective battery?

Battery consumption is going trough the roof lately..
Can someone tell me if it is normal to go from 56% to 28% in an hour of surfing and listening to music? (see screenshots) Screen brightness is 10% and just surfing, no downloading from the market etcetera..
I think it's unacceptable.. Took my phone from the charger 7:30 this morning, i charged it at work from 50 to 60% in the afternoon.
Current charge is 17%.
I already changed my ROM (clear cache, dalvik, storage) and radio but it doesn't seem to help at all...
I ordered a replacement battery for only 10 euro at ebay so i hope it will solve the issue..
Also, is there a known fix for the 90% charge on wakeup? It's rather annoying.

Yep thats 3G for you.. I've just been doing the same fir about 10 and already a 15% drop.. at least yiu can change the battery unlike the iPhone..
xx
Sent from my HTC Desire using XDA App

!PANDA said:
Yep thats 3G for you.. I've just been doing the same fir about 10 and already a 15% drop.. at least yiu can change the battery unlike the iPhone..
xx
Sent from my HTC Desire using XDA App
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Click to collapse
That's ridiculous.. Are you telling me it's normal to drop a percent per minute when actually using the device? (happened to me the other day)

Yeah I hear you. This phone has absolutely pathetic battery life. Even worse than an iPhone! Even using SetCPU to underclock it has little effect.
Just 10 minutes after unplugging it from the charger its at 94%. Another 10 minutes later its at 89.
Disturbing.

If you are sure you don't have an app running in the background, or a badly coded app draining your battery, I'd try THIS. I get around 48 hours of medium use on a full charge.
Calibrating the battery made a massive difference to me.

I forgot to mention that in fact i did calibrate my battery. Twice. Already 6% down in 10 minutes as we speak.
Sent from my HTC Desire using XDA App

Imperium said:
I forgot to mention that in fact i did calibrate my battery. Twice. Already 6% down in 10 minutes as we speak.
Sent from my HTC Desire using XDA App
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Click to collapse
Im not trying to be rude but im assuming you have checked all your settings & applications for wakelock bugs and syncing related stuff?
You should roughly have ~1% per hour consumption when idling(screen off).
Try typing *#*#INFO#*#* and see battery history for any abnormalities, like way higher "running" % than "screen on" %. They should be pretty much equal.

Jgruar said:
Im not trying to be rude but im assuming you have checked all your settings & applications for wakelock bugs and syncing related stuff?
You should roughly have ~1% per hour consumption when idling(screen off).
Try typing *#*#INFO#*#* and see battery history for any abnormalities, like way higher "running" % than "screen on" %. They should be pretty much equal.
Click to expand...
Click to collapse
Yes i checked all those things numerous times also no abnormalities in applications sucking up all the juice.
I think we can conclude the battery(consumption) just sucks monkey balls.

When your battery is fully charged go to phone and type the following. *#*#4636#*#* then tap battery information. It should say battery health good, and then Battery voltage. What doe that read?
I'd also try calibrating the battery again, following the instructions to the letter. If all else fails I'd try a factory reset and run it at stock for a while to test and ensure you don't have a rogue app.
One thing I'd say about your cheap replacement battery. They are never going to be nearly as good as an original, as they are mostly poorly made and deliberately wrongly labelled to make them look like they are high powered, and at worst can be dangerous. Just be careful with that one.
I really can't understand why you would have such poor battery life. I'm happilly getting at least 48 hours with mine. I have wifi and data enabled all the time, use it a lot for twitter, make a few calls, and send texts.
Anyway, good luck and let me know how you get on.

rolfd said:
When your battery is fully charged go to phone and type the following. *#*#4636#*#* then tap battery information. It should say battery health good, and then Battery voltage. What doe that read?
I'd also try calibrating the battery again, following the instructions to the letter. If all else fails I'd try a factory reset and run it at stock for a while to test and ensure you don't have a rogue app.
One thing I'd say about your cheap replacement battery. They are never going to be nearly as good as an original, as they are mostly poorly made and deliberately wrongly labelled to make them look like they are high powered, and at worst can be dangerous. Just be careful with that one.
I really can't understand why you would have such poor battery life. I'm happilly getting at least 48 hours with mine. I have wifi and data enabled all the time, use it a lot for twitter, make a few calls, and send texts.
Anyway, good luck and let me know how you get on.
Click to expand...
Click to collapse
Cheers for your reply,
I checked using *#*#4636#*#* and nothing out of the ordinary to be honest.
When fully charged it's around 4100mV so that should be ok as well.
About the cheap battery, it's from E-cell in the UK and my previous purchases were of good quality. So will see if it's crap or not

Having the same issue as you. Bought my phone 5 days back and I calibrated the battery too. No sneaky app trying to drain the battery.
Will wait for couple of days and then as suggested will reset the phone to factory settings and then check.

May be a noob battery question

Can someone explain why my battery sheds the first 10 percent from full charge within a half hour or direct me to a post that could explain this?
Sent from my PC36100 using XDA App

From what I've read, there's a chip inside the OEM batteries (the ones sold by HTC and included with the Evo) that prevents the battery from maintaining a full charge. This is because maintaining a full charge can overheat and overvolt the battery and cause problems.
Thus, when you unplug, your battery drops to where the charge actually ends up when the chip stops the charge from destroying the battery.
We used to have SBC kernels that rectified this problem, but after a couple of idiots forgot the part where it says "this may harm your phone, use with caution" they went on a terror-filled witch hunt and had them all taken down.
So, until there's another way, you're stuck with that buddy. Best of luck.

this is one of the more discussed topics nowadyas, or more the fix is.
so, li-on batterys like the evo one, can be damadged/metallic plated by containing a full charge for an extended period of time. so, battery manufacturers made charginng cycles, so once the battery is full, the charger will fully turn off until it has reached 90, and then power back up again.
recently, ms(numbers i cant remember. confusing username) made sbc (superior battery charging) kernels, that trickle charged, so your phone would sit at 4.2mV and not cycle. there has been much controversy about these, including some finger pointing and borked batteries (mine has never been the same since using these, but i really dont want to blame ms########) have lead to most if not all links being removed from the xda. too bad.

Thanks for the info guys, I just flashed a different kernal and did some set CPU clocking tweaks that have made me over joyed but for now it seems that the first 10 percent will have to be sacrificed, before I rooted my phone I got almost 18 hours out of my batt using juice defender I'm hoping for similar or better scores but I can't complain too much with the performance now
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joemaldo said:
Thanks for the info guys, I just flashed a different kernal and did some set CPU clocking tweaks that have made me over joyed but for now it seems that the first 10 percent will have to be sacrificed, before I rooted my phone I got almost 18 hours out of my batt using juice defender I'm hoping for similar or better scores but I can't complain too much with the performance now
Sent from my PC36100 using XDA App
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Click to collapse
Easiest way to fix the instant drain is to unplug your phone when it has a full charge. Let it drop to around 92 percent <---My personal preference or you can wait about fifteen minutes. Plug your phone back in and wait for the led to turn green and unplug it right after it turns green. BOOM! All problems solved!

Good humor man....
If your phone was at 100% for a period of time, you would feel more at ease about using it. That would bring about three things.
First increased network usage. Secondly increased phone position among its competitors because of one. Thirdly an increased consumption of batteries, since batteries are based on a chemical reaction which is limited by design. You don't have to be a rocket scientist to understand it. Go to a university chemistry department and they will point you in the right direction. No flashing of internet credentials.
So you want a solution? You can't handle a solution.

Why not give this a shot http://forum.xda-developers.com/showthread.php?t=701567

Battery Life

My battery has been depleting at a very rapid rate and am wondering if it's normal or something I can do on my end to fix. For example, I made a phone call and left a voicemail and the battery went down about 3%. I was thinking of just buying a replacement battery, but if there is something I can do to try and fix the current one, I'm open to that.
Thanks!

pchieng said:
My battery has been depleting at a very rapid rate and am wondering if it's normal or something I can do on my end to fix. For example, I made a phone call and left a voicemail and the battery went down about 3%. I was thinking of just buying a replacement battery, but if there is something I can do to try and fix the current one, I'm open to that.
Thanks!
Click to expand...
Click to collapse
Depending on your reception (and length of call/voicemail), that could be quite normal. There are other factors as well; is this a new phone? Have you recently flashed a new ROM, restored a backup or done a factory reset?
Sent from my HTC Vision using XDA App

OriginalGabriel said:
Depending on your reception (and length of call/voicemail), that could be quite normal. There are other factors as well; is this a new phone? Have you recently flashed a new ROM, restored a backup or done a factory reset?
Sent from my HTC Vision using XDA App
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Click to collapse
I just checked my phone since I posted the initial thread and it went down another 8%?! It definitely didn't used to be like this. The phone isn't new, it's about 14 months old. And yes I did recently root my phone and flash CM7 on it, but I thought it would have improved the battery life, not make it worse!
Let me know if any other info is needed, thanks!

Using the phone in the same location (like work or home) as you previously used the phone? Reception is often tied to location. I get rapid battery drain when in poor reception areas.
How long ago did you flash the ROM? You should cycle the battery from full charged (100%) to about 20% (but not empty) and repeat this a couple times in order to properly calibrate the battery meter. This needs to be done every time you flash a new ROM, in order for battery readings to be accurate. You can also clear the battery stats before you do this, to make sure any previous data is not screwing up the calibration.

pchieng said:
I just checked my phone since I posted the initial thread and it went down another 8%?! It definitely didn't used to be like this. The phone isn't new, it's about 14 months old. And yes I did recently root my phone and flash CM7 on it, but I thought it would have improved the battery life, not make it worse!
Let me know if any other info is needed, thanks!
Click to expand...
Click to collapse
As redpoint stated, you need to cycle a few times after flashing a new ROM.
Let's say your battery was at 60% when you flashed CM, the ROM is basically going to think that 60% is as full as it gets; after a few cycles, the ROM will "learn" your battery.
Additionally, there are so many tweaks one can do with CM that you can actually kill you battery faster if you max everything out (overclock all the way, turn on all the eyecandy, etc.)
Sent from my HTC Vision using XDA App

Check your parameters, set OC profiles in order to optimize energy consumption, also as said upper calibrate battery meter and then see how your battery holds, i don't think it's a physical defection because hardware is well made but you never know so do this and then we'll see.

download battery monitor widget from market and track the history and usage statistics, that will give you a starting point to trace the issue. as a reference, my DZ running miui and cm7 kernel is using roughly 26-29 mah with screen off
Sent from my HTC Desire Z using xda premium

I'd suggest flashing a new kernel for better battery life if all else fails.
Currently I'm running EliteMod's kernel, U flash it just like you would a rom
http://forum.xda-developers.com/showthread.php?t=1246682

I've been getting some bad battery life but not nearly as bad as you have.
I suggest fiddling with SetCPU or turning off all your usual wireless services like Wi-Fi, 3G and GPS

I bet the problem is that you got sync on! That NAILS AND KILLS BATTERY FAST!
Here you new gameplan.
Step 1: Download battery dr.
Step 2: Shut off all sync (manually sync when you need email updates etc.)
Step 3: buy 2 backup batteries from Ebay for cheap
Step 4: Shut off volume vibrate on keypress, shut off all animations, shut off volume noise on keypress, turn screen of from inactivity to 15 seconds.
That should help. Let me know your results.

Horrible battery life while just being idle?!!?

I've had this phone for about a month. Started off on stock, and rooted it and flashed different ROMs and kernels. I never really got good battery life with any ROM. Typically I would get around 7 to 10 hours of moderate usage.
I fully went back to stock firmware and kernel using ODIN, to flash 2.3.6. I rooted it and removed some bloatware apps. BUT, the battery life seems so bad.. it's been 2 days, I've done calibration 2 or 3 times.
Leaving my phone idle, in one spot, I lose about 4-5% an hour. 4G Data on, wifi off, 2/4 bars of signal, sync on (only gmail, google docs, contacts, calendar).
But today, I think it got worse, as shown here: http://i51.photobucket.com/albums/f380/wordk4/SC20120319-230121.png
Graph: http://i51.photobucket.com/albums/f380/wordk4/SC20120319-230126.png
Note: the data icon on top shows that it's on 3G, because I moved out of good signal area when I took the screenshots. The phone was idle in a spot with 4G getting 3-5mbps.
What's wrong with this? The phone is a month old, so I don't think it's a battery problem. I've calibrated 2-3 times since I went back to stock.
Also, don't recommend me to use Juice Defender. I use Google Voice to call and text, so I need data on all the time. And I know this phone can last over a day with data on (my friend has the same phone and it has lasted 2 days on one charge, completely stock firmware).
ALSO, when I press "Android System" on the battery history, here's a list of what it shows:
http://i51.photobucket.com/albums/f380/wordk4/SC20120319-231629.png
and
http://i51.photobucket.com/albums/f380/wordk4/SC20120319-231651.png
IS THIS NORMAL? :O

8-10 hours heavy usage? That seems like a lot...
Sent from my Sensation using XDA

Sensation-al! said:
8-10 hours heavy usage? That seems like a lot...
Sent from my Sensation using XDA
Click to expand...
Click to collapse
Actually that would be more of light/medium. Checking facebook every 30mins, a few texts now and then, playing a game for 30 minutes, listening to music for an hour, a call or two about 2mins each, a few instant messages on facebook, GPS use for 5 minutes, and idle for about 5 hours. Brightness at 50% or below. All on data connection, no wifi.

xFrozen said:
Actually that would be more of light/medium. Checking facebook every 30mins, a few texts now and then, playing a game for 30 minutes, listening to music for an hour, a call or two about 2mins each, a few instant messages on facebook, GPS use for 5 minutes, and idle for about 5 hours. Brightness at 50% or below. All on data connection, no wifi.
Click to expand...
Click to collapse
Well what do you think is suppose to happen when you USE your phone? Lol
Sent from my SAMSUNG-SGH-T989 using xda premium

cashyftw said:
Well what do you think is suppose to happen when you USE your phone? Lol
Sent from my SAMSUNG-SGH-T989 using xda premium
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Click to collapse
I know, but overall the time the display is on is 1-2 hours.. I know other people have been getting 16+ hours, 4 being with display on. With 4G data on.

xFrozen said:
I know, but overall the time the display is on is 1-2 hours.. I know other people have been getting 16+ hours, 4 being with display on. With 4G data on.
Click to expand...
Click to collapse
I see easily over 12 hours on a charge with my phone, and i use it heavily... 2 to 3 hours of phone time (at the least) wifi tether here and then, a lot of facebook iming and checking. Reading....
Something i noticed though. I got the phone in October or so, and the battery life started off pretty bad. I didnt do anything special, i figured it would be bad with such a massive screen. Over time though the battery improved, and now im seeing wonderful battery life. I usually unplug it at about 6:30 or so in the morning when i head to work, and yesterday at 10-something is when it started *****ing it had low battery life.
Moral of the story? Be patient, itll get better as time goes by.

xFrozen said:
I know, but overall the time the display is on is 1-2 hours.. I know other people have been getting 16+ hours, 4 being with display on. With 4G data on.
Click to expand...
Click to collapse
Your battery looks fine. Playing games rapes the battery. Also 4g rapes the battery.
There are ways to improve the battery but like you said... You need to use all of these features.
Go get a spare oem battery or a reputable extended battery.
Sent from my SGH-T989 using xda premium

Im at 52% right now, 34% display, time on 3 hours 14 minutes, and sitting at 1d 1h 39m on battery. Light usage.

Something is definitely draining your battery. As you can see your phone is awake when the screen isn't even on. It's just likely an app you downloaded or something in the background. good luck narrowing it down
Sent from my SGH-T989 using xda premium

Teo032 said:
Something is definitely draining your battery. As you can see your phone is awake when the screen isn't even on. It's just likely an app you downloaded or something in the background. good luck narrowing it down
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Lol way to back up your answer.
His battery is fine...
Sent from my SGH-T989 using xda premium

G1ForFun said:
Your battery looks fine. Playing games rapes the battery. Also 4g rapes the battery.
There are ways to improve the battery but like you said... You need to use all of these features.
Go get a spare oem battery or a reputable extended battery.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Just right now i'm on a bus and lost 5% in less than 10 minutes. Listening to music. All i did was send five texts, check Facebook for a minute and read the posts on this thread. That doesn't seem normal at all. 4G on, sync on.
blackangst said:
Im at 52% right now, 34% display, time on 3 hours 14 minutes, and sitting at 1d 1h 39m on battery. Light usage.
Click to expand...
Click to collapse
this is more than what I'm expecting, but definitely shows that something is wrong with my battery life.
Sent from my SGH-T989 using XDA

Oskiee said:
I see easily over 12 hours on a charge with my phone, and i use it heavily... 2 to 3 hours of phone time (at the least) wifi tether here and then, a lot of facebook iming and checking. Reading....
Something i noticed though. I got the phone in October or so, and the battery life started off pretty bad. I didnt do anything special, i figured it would be bad with such a massive screen. Over time though the battery improved, and now im seeing wonderful battery life. I usually unplug it at about 6:30 or so in the morning when i head to work, and yesterday at 10-something is when it started *****ing it had low battery life.
Moral of the story? Be patient, itll get better as time goes by.
Click to expand...
Click to collapse
You give me some hope. I recently ordered an Anker 2050mAh battery for this, hopefully that will help in the meanwhile.
Sent from my SGH-T989 using XDA

xFrozen said:
You give me some hope. I recently ordered an Anker 2050mAh battery for this, hopefully that will help in the meanwhile.
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
2050mAh wouldn't get you to much more out of thr battery..
Only 200mAh over stock, hows this supposed to help if you have a sleep mode issue or app issue?
Bringz me back to my first statement.
Your kernel is NOT allowing deep sleep mode for whatever reason, your best bet would be make a backup
Delete data/factory reset and try it over a day.. if it works good, its an app issue, still the same. It is undoubtedly the kernel. Why pay more for maybe an hour out of your phone?
Run some actual tests to clarify the issue first..
There. I said my peace

If you tried everything else try recalibrating the battery.
I have seen this happen most often when flashing new ROMs. Especially if you did not wipe your system, data, and caches before install it seems to encourage this.
To Recalibrate Battery (must have custom recovery like cwm):
Charge phone to FULL
(I highly recommend AC charger for this)
Reboot into recovery
Look for wipe battery stats (should be I'm advanced if not main menu)
Unplug phone and restart it
Now FULLY KILL THE BATTERY
(for faster results set mp3 or video on repeat and let her rip)
Fully charge one more time and done
(again I highly suggest AC adaptor)
Keep in mind if you set your CPU to Max frequency or leave a demanding app running and CPU is set to allow full usage ondemand or performance the phone will kill battery very quickly.
Same if you leave antenna on auto 4G and it is weak around you and phone is always searching it will go fast as well.
Sent from my SGH-T989 using Xparent Green Tapatalk

xFrozen: have you downloaded cpuspy to actually see if your phone is hitting deep sleep?

Realn00b said:
If you tried everything else try recalibrating the battery.
I have seen this happen most often when flashing new ROMs. Especially if you did not wipe your system, data, and caches before install it seems to encourage this.
To Recalibrate Battery (must have custom recovery like cwm):
Charge phone to FULL
(I highly recommend AC charger for this)
Reboot into recovery
Look for wipe battery stats (should be I'm advanced if not main menu)
Unplug phone and restart it
Now FULLY KILL THE BATTERY;
(for faster results set mp3 or video on repeat and let her rip)
Fully charge one more time and done
(again I highly suggest AC adaptor)
Keep in mind if you set your CPU to Max frequency or leave a demanding app running and CPU is set to allow full usage ondemand or performance the phone will kill battery very quickly.
Same if you leave antenna on auto 4G and it is weak around you and phone is always searching it will go fast as well.
Sent from my SGH-T989 using Xparent Green Tapatalk
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You sir, are a n00b, calibrating the battery is useless to this device and actually done automaticly.
So your post is useless and rather a waste of everyones time even reading. So thanks.
@above
Its obviously not hitting deep sleep, there's no way it can be and be draining the battery this quick.
@OP
As suggested above use cpuspy to check on the cpu when idle,
Sleep mode should kick in within 30sec to a minute.
Also chek my reply a few posts up and follow steps there..
Ignore Realn00b's post
Again:
@Realn00b
Please take the time to read up on batterystats.bin and find out what its for,
You don't need cwm to delete, just root explorer.. its in:
Data/system/batterystats.bin
Also, the entire basis of this is stupidity and was takin way out of context.
Batterystats is used to cache the active information of running applications (uptime/cpu usage, etc. NOT battery percents)
And should only be deleted under very very rare occasions (effecting above)
Your battery percent, is actually the mAh
Your system collects the information from a chip on the battery, among the information read, max mAh and current mAh.
The device then calculates from these the value we know as the percent.
Meaning, no device with a lithium ion battery stores charge information for the battery, making the entire purpose of your post for this, or ANY device not only useless, but also a little pathetic considering you would actually try to post a tip on something you are obviously completely uneducated about.
Please don't provide tips unless you are 100% sure of the situation and are actually educated on the material. Thanks

doug36 said:
2050mAh wouldn't get you to much more out of thr battery..
Only 200mAh over stock, hows this supposed to help if you have a sleep mode issue or app issue?
Bringz me back to my first statement.
Your kernel is NOT allowing deep sleep mode for whatever reason, your best bet would be make a backup
Delete data/factory reset and try it over a day.. if it works good, its an app issue, still the same. It is undoubtedly the kernel. Why pay more for maybe an hour out of your phone?
Run some actual tests to clarify the issue first..
There. I said my peace
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I originally purchased it for two reasons:
1. For long trips or for when I'll be gaming a lot
2. It had no reviews, so I figured I should buy it and test it. It's cheap anyways, $11.
Also, I'm on stock kernel. Everything stock + rooted.
I just did a re-flash with ODIN, so it has all the bloatware back on. I rooted and installed most of the main apps I use (facebook, aim, xda, google apps, games, basic things).
Currently I have sync on for Google contacts, calendar, and gmail. Facebook syncs with existing google contacts. T-Mobile contact sync off. Dropbox auto uploads camera photos on wifi only (I rarely take photos).
It's charging right now, at 50%. I might not have time to leave it idle today, so I could try in the morning if I have time.

xFrozen said:
I originally purchased it for two reasons:
1. For long trips or for when I'll be gaming a lot
2. It had no reviews, so I figured I should buy it and test it. It's cheap anyways, $11.
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Yea your right that is a good price.. is it same size as stock and have NFC? can you post link?
Thanks.
And please excuse realn00b up there..
He didn't know wat he was talking about.. read my post below it if you want an explanation.
Take a look at the safe to remove apps list aswell I'll see if I can find it on google pages for you. I definitely recommend
Deleting unndeeded applications and even replace stock with third party where applicable.

doug36 said:
Yea your right that is a good price.. is it same size as stock and have NFC? can you post link?
Thanks.
And please excuse realn00b up there..
He didn't know wat he was talking about.. read my post below it if you want an explanation.
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1. http://www.amazon.com/gp/product/B0078WL4YO (i ordered this)
2. http://www.amazon.com/Anker-Batteries-Skyrocket-SGH-I727-Multi-purpose/dp/B0078WR4KW/ (even better deal!)

xFrozen said:
1. http://www.amazon.com/gp/product/B0078WL4YO (i ordered this)
2. http://www.amazon.com/Anker-Batteries-Skyrocket-SGH-I727-Multi-purpose/dp/B0078WR4KW/ (even better deal!)
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Thanks!
That is a good deal.. doesn't say if it has NFC though, got some tags comming now
So definitely want that lol xD i dont want one of those bulky ass ones though