Hi.
Having my Note 2 for some time now I can understand that the phone is failing in some manner. Maybe someone can answer some questions I have. I had some problems with a failing battery that eventually became bloated and chucked it out. Bought a newer third party battery but It did not work right. After that I bought a original battery and it looks as original as I can see.
When my first original battery was failing I was getting wrong percentages and sudden voltage drops as expected with a damage battery that could not hold its charge anymore. With the third party battery I still could not get it right or just did not gave it enough time to settle in.
With my newest battery still get a sudden voltage drop but then it climbs up again when I read it with a software monitor. It charged as normal to 4.3mV (100%) and then a sudden drop to 3.7mV (70%) in those fifty minutes then it climbed up again to 4.2mV but the percentage gets stuck on 69% until the mV reaches the actual percentage.. I still get several days usage out of the phone until it needs a recharge so that is not a problem. I just like things to work as they should if it is possible. Googled around but the results I read mostly went into resetting the phone, back to factory setting or wiping several things. Already tried those things.
I was just wondering the following...
- Could this be a hardware malfunction..
- Should this eventually stabilize after several charges.
- Does the voltage drop indicate a bad cell.
- Has the battery lost its full capacity since it old stock.
Maybe someone has some insight or it is just as it is and I will just accept it.
Thanks.
Related
Man, I hate starting new threads! I did a simple search and couldn't find this problem anywhere else, so here goes:
Earlier in 2009 I bought an extended 2400mAh battery for my Kaiser (8925). Everything is working just fine, except that I noticed that the phone doesn't seem to notice that the battery life is much better for this new battery.
What I mean is: after a few hours of usage, the battery level drops at a normal rate.
Once the phone tells me the battery is almost dead (and sometimes the phone will shut off if I ignore this), I can shut down the phone, remove the battery, wait a few seconds and then replace it and boot back up the phone.
At this point, the phone will usually tell me that the battery is at 33% to 36% charged. Notice that I did not charge the battery, I just removed it and put it back in.
When I first got the battery, I cycled it completely three times in the phone, removing it twice and replacing it to ensure that the battery was completely drained before charging it to 100%. (Yes, I know that is only recommended for metal-hydrates, but I feel better doing that anyway).
On the top-end, it usually takes about two hours to charge the phone from 30% to 99% via a standard USB2.0 connector.
However, the phone will report that the battery is not fully charged for nearly an hour after reaching 99%.
I know what you are probably thinking; Why is this guy complaining about his battery performing better than his phone reports?
Well, it IS kind of annoying. I would like the phone to properly report the remaining percentage for my own benefit. I really hate having to guess at how much time I have left before I need to drop it off at a computer or wall outlet while I find something else to play with for three or four hours.
So... Does anyone know how I can convince my phone that the battery is pretty awesome and to start reporting the actual battery life?
ok my battery has good days and bad days. I have now tried something different and it seems to have worked for me. When I wake up in the middle of the night and the light is green i unplug my phone from charger. Then when i wake up four to five hours later it is usually around 95%. In the past I let it charge till I woke up then I would send a text or two a quick call or check email and it would drop to 88% or 90% in minutes. But now that I leave it unplugged for about five hours I get up and do what I usually do and battery doesn't seem to drain as quick. My question is why does this happen???? Strange that before it would go from 100 to 90ish real quick. now i start off at 95% and battery drains slower.
My battery is absolutely horrible. I unplugged it today n within minutes it was down to 93% n i didnt even use it at all. I have GPS turned off, wifi is off, 4G is off, friendstream is gone, i have everything set up to sync manually so idk wat the deal is.
If you are running a custom Rom you should do a search in the dev section for how to calibrate your battery.
it is stock rom. I have tried every battery trick. you could think of even the one someone posted from htc. none have work but for some reason this seems to be giving me better battery life. and i am just wondering why and sharing for other people to maybe try.
nothing new under the sun. a search would have revealed the following posts...
http://forum.xda-developers.com/showthread.php?t=701567
http://forum.xda-developers.com/showthread.php?t=712990
it sounds like voodoo, but based on the battery graphs before and after...it worked for me. the upgrade to 1.47 and 2.5 baseband seemed to help quite a bit too.
Strange battery design
OK it seems odd that the EE's who designed the phone specified a 4.2 volt charging cut off to the battery, and a 3.5V battery. It was probably to limit the heat production by components regulating internal voltage.
SO we can either up the charging cut off by rewiring a charger to use the feed but not the sensor ( 4 tabs on a battery), or get a battery rated a a slightly higher voltage ( which would only be partially charged due to the HTC charging algorthym). It may be that the recycling on /off specified by HTC ignores the sensor reading.
So I've been dealing w/ this little issue for the past few months where I can tell that the battery meter isn't reading correctly when the battery starts getting super laggy, slow to respond to inputs, etc. I've also experienced the same issues that I've read about here on the forums where after resetting the phone, I get drastic changes in before and after readings.
Just today I decided to search for the process to properly recalibrate the battery stats...jesus christ, there are opinions everywhere! Out of all the ones I've read, I've never understood the repeated charging and depleting cycle, THEN resetting the battery stats. Isn't the purpose of the battery stats to teach it to learn how to use the battery, so why wouldn't we be resetting the stats from either a completely dead or completely charged battery, then doing the power or draining cycles a few times?
Either way, I completely killed the battery lastnight, reset the stats and charged it w/ the phone on but in airplane mode. Unplugged for a moment, plugged it back in, LED went from red to blue within a few minutes. Did it one more time since I read random suggestions about "boosting" the battery like this. I then powered the phone off and did the same thing. During use today, the meter has been steadily dropping, maybe even a little faster than I'd expected, but I chalked it up to the phone learning.
Now the issue I'm having it that the phone froze about three times after doing the resetting and charging. Now mind you, this has happened before immediately after I flashed Syndicate w/o even touching the battery stats before or after a fresh ROM/Kernal installation, so I'm not goint to immediately assume it's because I may have done the battery stats steps incorrectly. At this point, I just want a truely accurate reading...none of the sluggishness when it says 29% then resetting takes it to 9% and the screen goes dim, the freezing the phone gets when it goes below 15%, etc.
There must be one, solid, concrete way to do this battery meter thing that doesn't involve everyone getting into a pissing contest about who is right, who is wrong, getting into a long speech about lithium battery blah blah blah. I just want a meter that reads accurately, period.
I agree. I have heard several methods to calibrate a battery but not one concrete method. I have read that its bad to run a Lithium ION battery all of the way down. Then I read that its the best way to condition the battery. Anyone with the proper method to calibrate the battery and make the reading the most accurate will get some "thanks" from me.
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While I can't say the meter was dead accurate when stock, at least it doesn't give me the issues I've been experiencing. There must be a way to find out how Sammy does it.
I find that the charge to 100 on, unplug, charge to 100 off, unplug, charge to 100 on, then turn of and clear battery stats from cwm works. I have no logical explanation why but i notice a significant battery boost and fture efficiency. Only reason it gets screwed up is flashing something new, but when I redo the process I get the same battery efficiency back. Also make sure any flashes don't activate syncing. I flashed something that turned mail syncing on and it was killing my battery.
My opinion on the whole battery deal is do nothing. These are lithium ion batteries, they have no "memory" effect. About the only way you can hurt them is to deep discharge them repeatedly or overcharge repeatedly. I don't feel there is a need to fully cycle 100%-0%-100%. Or charge off, then on, then unplug, blah blah blah... That probably just overcharges the battery anyway.
A while back I tried monkeying around with all those tips and tricks people post, didn't seem to do anything for my life. After a week or so of normal use the phone seems to learn your battery anyway. I say just let the phone do its thing, spend your time playing with cool apps or something.
No offense Insanity, but did you even read my post or know what batter stats does? I know Li batteries don't have a memory, its been stated before in nasseum. Battery stats is an application that tells or phones how to properly read the charge/discharge rate of the battery. Please don't take this thread down the "memory" blah blah blah road, because that's not the issue here. My battery is perfectly fine, I'm trying to find out an unbiased, educated, personal-opinionless and concrete way that battery stats need to be programmed, ie the way Sammy does it since I didn't have this problem until I started flashing roms.
All I'm saying is don't do anything, the phone will learn. When I stopped clearing battery stats every time I thought there was a problem I stopped having drastic drops in my battery meter after rebooting like some people have run into.
I haven't cleared battery stats in months now, my battery life is great and my phone doesn't lose mass amounts of battery randomly on reboot.
I also stated in my OP that I've been on this rom for a few months, if not even longer since I've been bouncing back and forth between Syndicate and Bonzai. Point is, months later I'm still having the issue, so clearly something isn't calibrating correctly, hence my creation of this thread.
Even if the battery stats are wrong/improperly calibrated/whatever you would call it I don't see how that would lead to lockups. Are you getting FCs at all? Maybe there's some data corruption at play? Is your filesystem journaled? When the phone locks up are you able to logcat?
The lockups I'm referring to only happen after I reset the battery stats, then it stops after a day or so or charging and discharging...it just never reads the battery correctly even after repeated usage. No FC's, phone just locks and a battery pull is the only way to stop it, journaling is on because the risk of FC's isn't work the slight speed increase and I honestly have no clue about how to check and/or post logcats.
m5james said:
I honestly have no clue about how to check and/or post logcats.
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Click to collapse
Make sure debug mode is enabled on your phone before it locks. When it locks plug your phone into your PC. Try from a DOS prompt inside a directory with the adb executable:
adb logcat > filename.txt
Let it run for a minute or so then ctrl-c to break out of it. If the phone is in fact completely locked it won't work, but its worth a shot to try to get a behind the scenes look at what's going on when your phone pukes. If you notice it lagging or something that makes you think its about to puke, try to get a logcat of that too. Use different file names when you logcat so you don't overwrite the old one.
issues with battery meter
Ive had the same exact problem. Its been fine since september when i got the phoen and even through flashing the phone. Everynow and again it will have a large drop after flashing but i typically have written that off as the power it takes to flash. Now after ec05 and this gingerbread leak, may battery stats is unreliable. It will stay at a certain percent until my battery dies. At any given moment i never know how much battery is left.
Hi All,
I am having troubled battery stat since I last flashed to a custom rom.
The battery will NOT reach the CHARGED status, and hence the battery stat did not reset and go on for days.
This morning I have decided to do a full wipe, but it appear that the same problem persist, at 68% on AC (most of the time stop at a random value) , it says NOT Charging.
I also thought that it could be the battery that was giving the problem, so i tried with a spare battery that i have, same results. Even when i Swap battery the stats stays.
Screenshot of battery stat. with AC power connected after a full wipe
Many people (myself included) have been having similar issues as of late. I too have separate batteries, neither of which is older than 6 months, and both exhibit similar behavior. I'm sure you've looked through and perhaps saw these threads, but I am trying to shed more light on the issue as it is perplexing many.
http://forum.xda-developers.com/showthread.php?t=1794231
http://forum.xda-developers.com/showthread.php?t=2080383
http://forum.xda-developers.com/showthread.php?t=2059289
http://forum.xda-developers.com/showthread.php?t=1973097
my troubles started soon after i flashed my first 4.2 rom. it started with only charging to 90%, now my one battery gets to 68% while my other only gets to 65% (30% loss in the past month). I am hoping an explanation comes up soon.
I had the same problem too, but for me the solution was switching between a few roms and calibrating my battery (wiping the battery stats). What ROM are you using?
I am on paranoid android, it was working fine until i did beta 8... and never able to do again..
what rom did you switch around to get it fixed?
Does anyone know any certain solution for this problem ?
After 4.2 upgrade , my battery gets to about 80 % and everyday It decreases
It bothering me and since in my country Google has not any agency for warranty replacement or repair,I'm gonna sell my Gnex if It problem goes on !
It's really strange. I have the same problem also, using either the official Apple 5v @ 1amps charger or a samsung charger with the same specs my phone only goes to 98% 99%, but when I use a generic charger ( I only used a 1-2 times with GNex) that's rated 5.2 volts (scares me) at 800mah it reaches 100%, as it does with the PC also.
Hi, recently I replaced that battery of my mi9se by myself (so it is possible that I screwed up in some way), afterwards the new battery started to last incredibly less than before, having a very strange behaviour concerning its charge level: let's say the phone is charged to 100%, then in the next hour or so the battery drains normally, let's say to 80%, then it starts freefalling to 60/50% then the phone dies at 40/50%. When I connect the charger, apparently the battery is at a dead 0%, it takes very little time to recharge to 100% and the cycle continues.
Obviously this situation is not sustainable in any way, yesterday evening I was on a call with my gf, my phone died at 70%, I connected it to the charger and powered it up, as soon as it booted it was at 10%, then I disconnected it for flipping the connector and it died again... Another boot and it jumped straight to 43%. I don't know what to do...
The situation wasn't so critical at first, but I also tried to order a third battery, but the results are the same.
Another thing to note is that I also changed the charger pcb, the one onto it is soldered the usb-c connector, because it was flimsy af. I thought the cause of my problems may have been the crappy one, advertised as new but probably used, that I ordered from china. But I also tried to replace it with the old original one with no apparent changes besides the fact that now the charger doesn't remain plugged as an added bonus (that was the initial reason that led me to change it in the first place).
Software notes:
I'm currently running the latest official build of lineageOS, I could try to do a software update, but idk if it could change something...
I have root access with magisk (if some low level root operations are needed I should be able to perform them)
I was running Advanced Charging Controller (https://github.com/VR-25/acc), that I uninstalled yesterday when it came to my mind that it may be messing with the battery readings, but without success.
I should also note that I run several calibration cycles as advertised on many forums: charge to 100%, let it die by battery drain and charge it again to 100% without interruption and without powering it up. No improvements.
Sadly I study offsite and I left the old battery at home, so I have to wait till next friday if some solutions involve using the old battery.
Thanks for saving me and my phone, that, beside his battery, it still works like a charm! Switching to lineage seemed to give him another 2/3 years of life and I really wanted to keep it as long as it works.
Thank you very much for your time!