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very bad battery drain issue :(

my o2 xda is running tnt wm6 for a long time now with no problems but recently my battery has started draining super fast like right infront of my eyes it drops percent numbers. i run battery status but that has never bugged the battery before. i also tried switching batteries with two of my friends and their phones run fine but mine drains fast. i have charged it with both the computer and the charger. it charges super slow and upon charging when i restart it the battery drops something like 20 percent or more instantly. could this be a virus? i factory resetted my phone and formatted my memory card but im still getting this issue. please any help would be much appreciated!

d3aded said:
my o2 xda is running tnt wm6 for a long time now with no problems but recently my battery has started draining super fast like right infront of my eyes it drops percent numbers. i run battery status but that has never bugged the battery before. i also tried switching batteries with two of my friends and their phones run fine but mine drains fast. i have charged it with both the computer and the charger. it charges super slow and upon charging when i restart it the battery drops something like 20 percent or more instantly. could this be a virus? i factory resetted my phone and formatted my memory card but im still getting this issue. please any help would be much appreciated!
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try other ROMs.

the fact of the matter is that ive been using this rom for so long without problems and this battery charger thingy just started a few days ago. could this be hardware problem?

Time for a new battery. Try nothing else until you have replaced it, with a new one, not one from another phone.

new battery really? u mean a battery from another phone doesnt do? and yes my battery dies very fast even my friends battery in my phone. cudnt this be a problem in my phone then? cause its his battery

Its definately a battery issue.
Check out this thread and I think you will relate: http://forum.xda-developers.com/showthread.php?t=353780
Then go to eBay and buy an new OEM replacement for like $10 shipped. I think I paid $8 for mine.

I personally think it is a bug.
On three separate occasions using various roms, my battery would drain from 100% to 0% in an hour. I would reset everything, recharge and it would run normal without problems.
I do not know what causes this but it does appear to be a software glitch, at least in my case.

try to hard reset your device and then test (after backup your data).
this can give you the clear reason (in case of the rom was running well with you).
good luck

try another radio!

i had the same issue, but it stop draining after i ordered the new battery

I suspect that it is not the battery or the unit.
its right said:
try to hard reset your device and then test (after backup your data).
this can give you the clear reason (in case of the rom was running well with you).
good luck
Click to expand...
Click to collapse
Actually I am suddenly having the same problem with a brand new battery on a brand new Wizard.
I just loaded the newest Mfrazz Rom which seems to be fantastic in its applications, speed etc. however immediately on loading the ROM, my battery does get hot in normal use and drains to 30% in a normal day. I have even loaded the IRDA disable cab to no particular effect.
Is there some specific procedure to which you are referring for hard resetting the Wizard? I assume you don't just take out the battery?

Dead battery
Lithium batteries can be killed rather easily. I know from rc helis. Most mobile phones use lithium-ion batteries. Helis use lithum-polymer batteries but they have pretty much the same charactoristics. li-poly is a little more volitile, they can and will explode if you charge or discharge too much or too quickly. If you over charge, you kill it. If you over drain, you kill it.
If you are in a place where you get little or no signal turn off the radio. It will discharge quickly if it's searching for a signal. Also if you are not using the bluetooth or wifi turn them off, same thing. That's why they provided the Comm Manager. Try not to let your charge get below 20%. Definately don't let it run completely out or stay that way long.
A dead lithium battery will not hold a charge at all. Just like you see, the numbers dropping off quickly. It will charge fast too.

(Snot the battery)
licensedtoquill said:
Actually I am suddenly having the same problem with a brand new battery on a brand new Wizard.
Is there some specific procedure to which you are referring for hard resetting the Wizard? I assume you don't just take out the battery?
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Click to collapse
Looking at it afresh, it isn't the battery which is heating up on installation of this ROM, it is the unit itself. The battery seems to be remaining at a comparatively normal temperature though the heat generation does drain it very quickly as I said.
Not sure that this problem has ever been addressed before on these boards? It may be something to do with not flashing to a manufacturer's ROM before flashing to Mfrazz's new one?
Has anyone ever seen these symptoms before?

In addition to some of the other posts ,you could check this :
WM6 may need to "learn" the battery levels again.
Try FULLY discharging & recharging your battery 3-4 times.
If this doesn't make things better, maybe you should check if you are running anything strange in the background...

jtrash said:
In addition to some of the other posts ,you could check this :
WM6 may need to "learn" the battery levels again.
Try FULLY discharging & recharging your battery 3-4 times.
If this doesn't make things better, maybe you should check if you are running anything strange in the background...
Click to expand...
Click to collapse
Lithium batteries don't recover like ni-cad. Spend the $10 and solve the problem. DONT EVER FULLY DISCHARGE A LITHIUM-ION BATTERY. That is the quickest way to kill it.

mr.incredible said:
Lithium batteries don't recover like ni-cad. Spend the $10 and solve the problem. DONT EVER FULLY DISCHARGE A LITHIUM-ION BATTERY. That is the quickest way to kill it.
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Click to collapse
As far as I am aware it is difficult to FULLY discharge one of those batteries in the Wizard? The unit starts giving error messages when it gets to the 15% level and some time thereafter shuts most of its functions down to prevent this. Whenever I have had problems with these units getting hot and even discharging and shutting down, the battery level never seems to be at 0% when I plug it in again. I have never thereafter found any permanent damage to the battery.
I think we should address the problem which seems to be in issue here which is that somehting in the OS is causing the battery to discharge as opposed to replacing the battery and watching the problem continue. At least, that was MY problem.
I am obviously not saying batteries don't die. All I am saying is that for a lot of users, the problem may lie elsewhere. Meanwhile I have flashed back to T-Mobile and re-flashed the newest Mfrazz which SEEMS to be quite VoIP friendly and overnight the unit doesnt seem to have heated up.

since i cant order a battery from where i live i tried reflashing my phone and memory card and i think that fixed it. maybe in my case its an os bug. and yes i definitely have been treating my battery badly on discharging and over charging. thanks for the info

They are not that delicate if you know what kills em it's pretty easy to avoid. They don't develop a memory like the older ni-cads. if you are going to store one charge it first. They don't power drain by them selves unless they are in a device. Just don't leave a battery drained. Also they wont over charge in the phone. The phone will stop charging when the battery is full, and 0% is not actually 0volts. There are built in safeguards for the average user.

[Q] Don't shut down when out of battery?

Hi, I been looking around but can't find an answer for this so here goes:
I'd like my phone to NEVER shut down on low battery. I'm not talking about the miss calculated battery stats, but the (I assume) built-in shutdown when I am down to 2-3 % left.
When this happens (I tend to forget to charge my Charge), I usually turn it on and call people back which gives me around 10-30 seconds of talk at least 4-5 times before the phone is finally dead (And showing 0%).
What bugs me is that each time I waste battery on the phone starting up again, checking the SD card, firing up display etc etc. I'd rather spend that juice on talking.
So... anyone know of any tricks to tell the phone to just keep ticking till it cant no more...?
Thanks,

I don't know of a way, and even if I did, that's an extraordinarily bad idea. It shuts down in low battery situations for a reason. This isn't a simple feature phone. Android is a full-fledged Linux operating system, and just losing power can cause major data corruption if it happens at the wrong time.

Data doesn't matter
shrike1978 said:
I don't know of a way, and even if I did, that's an extraordinarily bad idea. It shuts down in low battery situations for a reason. This isn't a simple feature phone. Android is a full-fledged Linux operating system, and just losing power can cause major data corruption if it happens at the wrong time.
Click to expand...
Click to collapse
I know this. However, corruption would not be in the firmware, merely in the user storage and I factory reset my phone all the time in the blink of second. Everything I have on the phone is constantly unloaded and easily restored; the phone is in itself just a hub for everything cloud (to use a overused buzzword).
So question is still there

My phone doesn't shut off until it is at critical level, <1% battery. I've even had my phone on before when it was displaying 0% battery, and it didn't turn itself off until it had to. I haven't had my phone shut down on its own until it was essentially dead, both with my Charge and Fascinate.

So...? Recalibrate?
So, it may sound like I need to re-calibrate my battery (again) ?
Is it possible that the phone will need more than one round of charge/drain/charge to show/use the correct battery charge?

It shouldn't if you do it properly. You need to let it cycle from 100% to 0% without restarting, flashing, wiping data, or anything similar. Just charge the phone to 100%, unplug it as soon as you can after it is fully charged, and then allow it to drain until it turns off, and recharge it again fully and you should be good to go.

Also, I thought that I read somewhere that if you ran the battery down to absolute 0, you kill the battery totally

piizzadude said:
Also, I thought that I read somewhere that if you ran the battery down to absolute 0, you kill the battery totally
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Click to collapse
You'll never have to worry about that on a cell phone. When the phone shows 0%, you'll still have a bit over 3V in the battery. Cell phones have a very narrow range that they work over (about 4.2-3V). Outside of that, there's not enough voltage to power the phone, so it will never be able to fully discharge the battery.

It is still a really bad idea to drain the battery all the way down to zero. Buy another battery and carry it with you, if you must. Lithium-Ion does not like to be discharged drastically and charged drastically repeatedly. It likes to cycle at a higher range.
It sounds like you are draining the battery as far as you can as often as possible. This is no good in my experience.
I bought the charging dock that charges a spare battery and comes with a spare (OEM) battery also. When ever I go to leave the house and I realize I forgot to charge my phone, I just swap the battery and I have 100% instantly. If this was a problem for me while I was out, or if I go on a long trip, I'd just carry the spare battery with me one way or another.

I'm no technical expert, but it seems like this article may be somewhat relevant to the conversation.

Innacurate battery stats?

If i charge my phone to 100%, use it for about 2-3 hours i have ~ 60%.
But if i want to restart my phone for example when it has 60%, after the restart it shows 82% or smth like that. So my question is, why the battery information isnt the same after a restart ? Is something
Another wierd battery stuff : If i charge it to 100% when using it decreseases by 2% once.
100 , 98 , 96 , then it start showing the numbers properly without skipping them.
Example. Today my battery drained and turned off like always, so the battery stat should be "0%". But when i pluged it in and after powering my phone reads the battery is 28%
What should i do? I already wiped the battery stats.

The battery percentage indicator is always just an approximation. Basically your device just gets the voltage and tries to guess the percentage with some knowledge about the behavior of the battery drain.
It's totally normal that you get different results after a reboot. I experienced this with different devices, so it's nothing specific to the Sensation.
I don't know what exactly the wiping of the battery stats does, but I would guess that you then need a few charging/discharging cycles in order to get it working properly.
Furthermore you should try to keep your battery charged all the time. Never discharge it completely, as this is one of the worst things you can do (at least with Li-Ion and/or Li-Po batteries).
Just another question: Do you have the original battery? Maybe you have some cheap battery with some cheap controller, which behaviors as such .

Its the battery from the original phone box.
Can u also please tell me how to calibrate step by step, and if u can recomment me a Sense-rom-like TaskManager for the CM7?

As said above I've no idea what "wipe battery stats" exactly does. Normally the manuals say something like "please fully charge and discharge your battery for 4 to 5 times". But maybe the "wipe battery stats" option invokes something else.
Personally I don't use any Task Manager. The general conclusion seems to be that Android (especially with the amount of RAM the Sensation got) can handle this for itself quite well. Android got some decent algorithms in order to decide whether an application is still needed and will close it (while saving most of the states within the application). When you open it the next time, Android will try to restore the state and you usually don't even realize what happened in the background. Any task manager will interfere here and shorten the battery life. So under normal circumstances you shouldn't need a task manager.
You just need to get used to the idea that the operating system decides what is best for you (or at least best for your battery life) and try to abstract a little from the "open/close" mindset we are used from our desktops for decades.

That fixed a lot of broken links in my mind.
Thanks.

If you still want to calibrate your battery (e.g. by wiping battery stats after charging it correctly and all that), just follow the general directions in these threads:
http://forum.xda-developers.com/showthread.php?t=937080
http://forum.xda-developers.com/showthread.php?p=16808932
Just be aware of the fact that Current Widget seems to be wrong values for the sensation and that you need an app to find out what apps are causing battery drain (because that function is not available in Gingerbread anymore). Please refer to my post on another thread in order to work around these limitations:
http://forum.xda-developers.com/showpost.php?p=18193397&postcount=6
Good luck!

Battery life reduced by a huge amount after calibrating on Galaxy S9+

I have a 3 year old galaxy s9+. In the most recent battery test I did on it, i got a solid 8-9 hour SOT on a video loop test.
Sometime after that, my battery started dying quickly at 30%. I searched online and battery calibration seemed to be the way to correct it. I did it and now my phone retains less than 67% of its actual charge. Meaning, it dies every 3-4 hours now. It charges insanely quickly too. Obviously the battery hasn't degraded by a while 20% since the video test since that was done only 2 months back. Please help!

The Android OS has a feature called Battery Stats, which keeps track of battery capacity, charge level, etc.pp. Most times the problem lies with how the Android OS reads and displays the current charge level of the battery, not the battery itself. The Android OS file that houses these informations may be corrupt or even missing.
Calibrating your "Android" battery simply means getting the Android OS to correct this collected information so it is reflective of your actual battery charge level once again. Your device's Android must be rooted to successfully calibrate the "Android" battery by means of of a "Battery Calibrator" app like this one:
Download Battery Calibration latest 3.3 Android APK
Battery Calibration Android latest 3.3 APK Download and Install. Battery Calibration is the #1 battery calibrating app in the Google Play Store.
apkpure.com
Take not that simply running a battery calibrator app isn't all what you have to do,
read complete XDA article here:
[GUIDE] How to Callibrate Battery On Your Device [ROOT/NON-ROOT]
Battery problems are among the biggest concerns for smartphone users, which is why XDA offers so many useful tips for solving battery drain issues. If you notice that your battery performance and duration has decreased, it could be time to...
forum.xda-developers.com

TY for the detailed reply. I definitely don't regret asking on xda! I will follow these procedures and update on the progress. TY
EDIT: The battery calibrating app you had linked doesn't seem to be working. It doesn't go past the log in screen. I've gone through the calibrating wiki you linked. I'll try that.

Battery health at 92,7% after 6 weeks - is it normal?

I have a POCO F3 that I've purchased about a month and half ago. I've dialed the code *#*#6485#*#* to check my battery health by diving the current battery capacity for the factory battery capacity and then by multiplying that result by 100 and it was at 92.7%. Is it normal after about 6 weeks of use with the phone?

crazy_penguin said:
I have a POCO F3 that I've purchased about a month and half ago. I've dialed the code *#*#6485#*#* to check my battery health by diving the current battery capacity for the factory battery capacity and then by multiplying that result by 100 and it was at 92.7%. Is it normal after about 6 weeks of use with the phone?
Click to expand...
Click to collapse
Check what cpuz reports. To me that doesn't look normal, something is with the battery sensors. Have you installed any custom kernel or anything that might play with "Advanced Charge Control Interface" ?

LAST_krypton said:
Check what cpuz reports. To me that doesn't look normal, something is with the battery sensors. Have you installed any custom kernel or anything that might play with "Advanced Charge Control Interface" ?
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What is cpuz? I haven't installed anything

LAST_krypton said:
Check what cpuz reports. To me that doesn't look normal, something is with the battery sensors. Have you installed any custom kernel or anything that might play with "Advanced Charge Control Interface" ?
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Oh ok. It's an app. I've installed and this is what appears about my battery's info

@crazy_penguin
IMO you can't compute Battery health at your own - at least not the way you did it. And Android OS also can't.
Battery health - also called battery lifespan - simply tells you amount of time your battery can last until it needs to be replaced / fully recharged.
Battery health always is expressed as estimated time - in hours and minutes, not as percent of whatever.
More info here:
Battery Life Calculator: How Long Does A Battery Last? (Ah, V, Hours)
In our article discussing Ah (ampere-hours) and Wh (watt-hours), we got a ton of questions about the longevity of batteries. The question “How long does a battery last?” was a predominant one. To help everybody trying to calculate how long will a battery last, we have created a Battery Life...
learnmetrics.com

crazy_penguin said:
I have a POCO F3 that I've purchased about a month and half ago. I've dialed the code *#*#6485#*#* to check my battery health by diving the current battery capacity for the factory battery capacity and then by multiplying that result by 100 and it was at 92.7%. Is it normal after about 6 weeks of use with the phone?
Click to expand...
Click to collapse
It's not normal, in that period, it shouldn't decrease a full 2%. Sometimes, a malfunctioning OS may report false calculations.
On my old device, I used two different systems, they showed different calculations of battery health.
One OS showed ~68-67%, the other showed 76.4%. I don't trust calculations anyway.

Mohamedkam000 said:
It's not normal, in that period, it shouldn't decrease a full 2%. Sometimes, a malfunctioning OS may report false calculations.
On my old device, I used two different systems, they showed different calculations of battery health.
One OS showed ~68-67%, the other showed 76.4%. I don't trust calculations anyway.
Click to expand...
Click to collapse
Wipe cahce partiton or even do a factroy reset. If you have TWRP check what battery % it shows there.

jwoegerbauer said:
IMO you can't compute Battery health at your own. And Android OS also can't.
Battery health - also called battery lifespan - simply tells you amount of time your battery can last until it needs to be replaced.
Click to expand...
Click to collapse
Meh, stop worrying.
An Li useful life is about 200 full charge cycles (0-100%).
Partial midrange charging cycles (40-62%) can yield hundreds even thousands more full charge cycles to the battery's lifespan.
Estimate battery health by SOT and by drain reported overnight.
When your SOT dips much below 80% of it's new capacity, the Li is degraded and at the end of its usable lifespan.
Replace before it fails and damages the phone.
Any battery swelling in a failure.
Cell phone Li's hate high cell voltage, temperatures and high discharge rates.
Keep charge cycles between 40-72% to extend life.
Li's love frequent midrange power cycling.
Avoid discharging below 20% or constantly charging to 100%.
Minimum start charge temp is 72F, 82-92F is best. Low temp charging can cause Li plating.
Never attempt to charge a Li below 40F!!!
If battery temp is exceeding 100F use cooling.
Apps like Accubattery's history logging are useful is seeing actual battery discharge and charging times. Useful is spotting excessive battery drain.
Eventually the battery will need replacement. On a heavily used phone that's 1-2 years.
No big deal... just do it!
Always use a new OEM seal if the phone is watertight.

LAST_krypton said:
Wipe cahce partiton or even do a factroy reset. If you have TWRP check what battery % it shows there.
Click to expand...
Click to collapse
Oh don't worry, I never considered this a problem, phone was just fine in everything except at the health calculation.
I'm just showing the OP that maybe it has something to do with the OS.

LAST_krypton said:
Wipe cahce partiton or even do a factroy reset. If you have TWRP check what battery % it shows there.
Click to expand...
Click to collapse
how do I wipe cache?

Try discharging until it dies then charge to 100%
Repeat 2 more times to recalibrate the battery % indicator.
Not worth the trouble though...

blackhawk said:
Try discharging until it dies then charge to 100%
Repeat 2 more times to recalibrate the battery % indicator.
Not worth the trouble though...
Click to expand...
Click to collapse
so it's not worth doing it? I shouldn't worry about those 93%?

crazy_penguin said:
so it's not worth doing it? I shouldn't worry about those 93%?
Click to expand...
Click to collapse
As long it shutdown at 5% and charges to 100% there's nothing that should to be done.
A sudden capacity drop, erratic fast charging indicate a battery failure.
A swollen battery is a failure.
You have none of these symptoms.

it's fine, I agree

I don't think it's typical, what you use it for is dependent? Maybe if intensive video processing and tweaking, playing and watching live?
May Anyone ask how something functions, too? What could I get to learn about the quality and capability of your real battery?