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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.
Sent from my SPH-D700 using XDA Premium App
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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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.
I've brought my Desire Z back for reparation (Mainboard died and replaced by an official repair center).
I've bringed it with my stock Battery fully loaded (I took it from the charger and 30 minutes later it died). When i picked it up, the battery was totally empty. Nothing in it. The Phone didn't even turned on!
It taked a while on the charger, but finally it turned on and was charged to 100% in normal time.
Since that, I experience a huge battery drain. When I release my phone from the charger on 7.30AM, it is dead on 4.30PM with no use! No SMS, phonecall, nothing. Only Gmail sync.
I've tried different ROM's (With- and without sense) and did restore my phone to stock. It doesn't solve my problem, the drain still stays huge, even with no apps installed!!!
I've tried another battery > same problem!
What can this be? Normally, my Desire Z last about 1,5 days oder 2 days when nothing happens. Why it's draining so fast, even if it's not used?
What can I do to resolve this ??
JassyNL said:
I've brought my Desire Z back for reparation (Mainboard died and replaced by an official repair center).
I've bringed it with my stock Battery fully loaded (I took it from the charger and 30 minutes later it died). When i picked it up, the battery was totally empty. Nothing in it. The Phone didn't even turned on!
It taked a while on the charger, but finally it turned on and was charged to 100% in normal time.
Since that, I experience a huge battery drain. When I release my phone from the charger on 7.30AM, it is dead on 4.30PM with no use! No SMS, phonecall, nothing. Only Gmail sync.
I've tried different ROM's (With- and without sense) and did restore my phone to stock. It doesn't solve my problem, the drain still stays huge, even with no apps installed!!!
I've tried another battery > same problem!
What can this be? Normally, my Desire Z last about 1,5 days oder 2 days when nothing happens. Why it's draining so fast, even if it's not used?
What can I do to resolve this ??
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try a new battery? Reset battery stats and give it a few days to actually get accurate readings? 8 hours isn't unheard of especially if your battery is giving up the ghost. give those thigns a try and maybe turn off sync and/or data to see if that makes a differance.
killj0y said:
try a new battery? Reset battery stats and give it a few days to actually get accurate readings? 8 hours isn't unheard of especially if your battery is giving up the ghost. give those thigns a try and maybe turn off sync and/or data to see if that makes a differance.
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Thanks! I've already tried a new battery, but that makes no sense.
I'm now draining it to zero, i.e. when it's fully dead, and then charge it to 100% for 8 hours. When it's charged, i'll wipe battery stats. Let's see.
When anybody has more tips, i'm pleased to hear them!
Here's a tip: don't drain your battery to zero. This is a great way to shorten the life of the battery, or completely ruin it.
For purposes of battery meter calibration, draining to 10-20% is plenty sufficient.
There should be no problem draining a battery to zero as shown by software. There is a myth/misunderstanding that this is a bad thing because people confuse it with the fact that Lithium Ion batteries can be permanently damaged if they are drained too low.
BUT any device using such batteries will have its circuitry setup to have 0% set to a point above this damaging threshold.
So the "too low" point in hardware is likely to be below the zero point that the phone's firmware and software will let you go to.
Sent from my Desire Z running CM7.
redpoint73 said:
Here's a tip: don't drain your battery to zero. This is a great way to shorten the life of the battery, or completely ruin it.
For purposes of battery meter calibration, draining to 10-20% is plenty sufficient.
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x2 I concur with this. No need to fully discharge the battery, one it probably doesn't even fully discharge because I'm pretty sure the software is saving you from yourself, plus when the battery stats are uncalibrated I'm fairly certain it reads as discharged but in fact is only partially thus the calibration is off. Lastly I'm if the opinion that throwing different charge levels works better because it more closely resembles real life charging situations. Also letting it charge for that long does nothing because the phone charges only a trickle when full in order to not ruin the battery, similar to a laptop. Overcharge protection....
Thanks again!
Now I did charge it to full and wiped Battery stats.
After 1hour 30 minutes, it lost 10%. Did only send 2 short mails with Gmail.
Here is the usage chart:
- Screen 54% (Time active 4m 51s), Brightness ~20%
- Mobile Stand-By 20% (Time active 1u 26m 13s)
- Phone inactive 18% (Time Active 1u 21m 21s)
- Gmail 5% (CPU Total 31s, CPU Foreground 25s, enabled 51s)
- Android OS 3% (CPU Total 21s)
CPU is on idle ~10%, as always. I don't see any apps that are burning my battery.
s there something abnormal here?
just compared it with my statistics (running virtuous affinity)...
Mobile Stand-By seems to be very high... i have 4% (time active 2 h 30 m)
maybe radio related?
hoffmas said:
just compared it with my statistics (running virtuous affinity)...
Mobile Stand-By seems to be very high... i have 4% (time active 2 h 30 m)
maybe radio related?
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This stats come from Virtuous Affinity also. I'd had never had any problems with such a drain with my 'old phone'. As soon as I got it back from the repair center, the battery drain is huge.
I've reflashed the latest radio for my phone, made a Superwipe and made a fresh install of Viruous Affinity. Let's see.
I think that 'Cell Standby' is killing my battery. It is at the top of the usage list with 38% and it's all time active. My phone was left it's charger at 7.15AM, now at 9.00AM it lost 20% of it's battery on idle use only. On 9.00AM, I've turned my phone on airplane mode. Let's see if that works.
I will recover the phone to stock tonight. If this isn't working, I'll return the phone to the store.
Even with the phone on airplane mode the battery is heavily draining. My last escape is to remove the SD Card. If the draining continues, then I will bring my phone back.
Does the battery came hot? Like more than normal?
With temp+cpu app you can monitor your temperature.
Because if on idle the temperature's around 25-28 C, you should be alright.
And then you can consider what steviewevie said; lithium battery can be damaged if you go on a too low voltage. Even if the phone as his ''protection'' to not get the battery to a critical level, the battery can loose power even if its not used.
Lithium ion, its cool but not perfect.
Try a OEM brand new battery.
steviewevie said:
There should be no problem draining a battery to zero as shown by software. There is a myth/misunderstanding that this is a bad thing because people confuse it with the fact that Lithium Ion batteries can be permanently damaged if they are drained too low.
BUT any device using such batteries will have its circuitry setup to have 0% set to a point above this damaging threshold.
So the "too low" point in hardware is likely to be below the zero point that the phone's firmware and software will let you go to.
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Click to collapse
I've seen plenty of people on XDA with this phone and others that have rendered their battery unable to charge by letting it discharge to zero. Yes, there are failsafes meant to prevent over-discharge, but they apparently do not always work. The damage is not "permanent" in that its just the protection circuit of the battery kicking in. But the only way to bring the battery back from "sleeping" is with a special battery meter with boost function, which most people do not have access to. So for all practical purposes, its cheaper to just buy a new battery.
http://batteryuniversity.com/learn/article/low_voltage_cut_off
Yes, over-discharge will not LIKELY kill your battery in this way. But there is no point in taking the risk. The battery meter is far from accurate in the best of conditions. So there is zero benefit to letting the battery drain to zero, as opposed to 10 or 20 %, just for the benefit of calibrating the battery meter.
Also, even if over-discharge does not instantly "kill" the battery, running full cycles at the least will shorten the overall life of the battery. Its best to avoid full cycles and charge often.
http://batteryuniversity.com/learn/article/do_and_dont_battery_table
Now this is just my experience from reading the experiences of others on XDA. I know there are hardware techs that can give much more first hand experience with batteries and may disagree. But as I figure, better safe than sorry. Especially when you consider there is no real benefit to letting it drain to zero on purpose.
oVeRdOsE. said:
Does the battery came hot? Like more than normal?
With temp+cpu app you can monitor your temperature.
Because if on idle the temperature's around 25-28 C, you should be alright.
And then you can consider what steviewevie said; lithium battery can be damaged if you go on a too low voltage. Even if the phone as his ''protection'' to not get the battery to a critical level, the battery can loose power even if its not used.
Lithium ion, its cool but not perfect.
Try a OEM brand new battery.
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Click to collapse
The temp of the battery don't exceed 28 degrees, I test this with Battery Indicator Pro. When discharged, the Voltage is around 3,6 (Which is normal behaviour). When charged, it,s 4,2V which is normal also.
I have already tried a new battery, and it doesn't make sense. Same behaviour.
I'm really clueless, because it drains the battery always. Airplane mode an removal of the SD card makes no difference.
I will return to stock tonight, charge again, and see if it behaves the same. When yes, then I will return the phone as I don't accept such behaviour (Normally, my Battery last 30+ Hours on idle).
Thanks for your tips and help for so far! I will report.
Hello,
I've read the threads about battery in the desire, BATT FIX with new kernels etc but can't really find a definite answer for my problem.
I bought my phone 18 months old and from the beginning it has shut down at about 20%. Tried the battery thing with charging, on/off, charing again etc, wiping battery stats etc but it doesn't seem to matter. So, I thought I'd just buy a new battery and be done with it.
The new battery arrived yesterday (actually, it's a used battery from customer returns but seller tells me it's been tested to be in mint condition). So this battery shows 3% when I first start up with it, "good, this seems to work" I think. But when at 75% the charger indicator (LED light) all of a sudden turns green and battery % jumps straight to 100%. I do the battery calibration trick with on/off charge and wipe battery stats. Stuck at 100% for some time as reported by others trying this "trick", have been using it all day and it shuts down at 25% even worse than the other battery...
The best voltages I've seen on this supposedly new battery is 4,144 and somewhere above 3.5 (nowhere near 3.2 and 4.2). What strikes me as odd is that I get very close to the same values with my old battery so I'm starting to think that maybee both battery are good but the phone reports way wrong values...is this possible?
Battery life with phone and data connection on, 1 gmail account but disabled backup feature (no GPS, BT etc) gives me -5% after 10 hours standby and I can use the phone for browising, light gaming for about 3 hours and 40 minutes before it dies (more or less constant usage at very low autobrightness levels and Turbo 3G enabled).
If someone has some insight into this it would be really helpful before I contact the eBay seller for this particular battery.
Regards, Olle
Same thing
My phone shuts down at 35% now... Is that a problem with the chipset or what? Only with Alex-V's calibrated kernels my phone shuts down at 0%, and sometimes it decalibrates too, but after calibration is Okay. I wonder if i need a new battery or my chipset has issues.
Hello,I have a problem with my HOX, the battery percent is not updating correctly,for example I let the screen on for like 30 minutes and I have NO BATTERY DRAIN, then it suddenly decreases by lets say 10%. This happens all the time on different kernels and roms and I have no idea why. Is my battery damaged? Is there any way to fix this? I calibrated the battery a few with no apparent result. Any oppinons or advices are greatly appreciated.
clau22bv said:
Hello,I have a problem with my HOX, the battery percent is not updating correctly,for example I let the screen on for like 30 minutes and I have NO BATTERY DRAIN, then it suddenly decreases by lets say 10%. This happens all the time on different kernels and roms and I have no idea why. Is my battery damaged? Is there any way to fix this? I calibrated the battery a few with no apparent result. Any oppinons or advices are greatly appreciated.
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+1
i have the same issue , anyone found out the solution to this ? is it a software problem or a hardware problem ?
im thinking we have to change our batteries really , it could be the only solution
clau22bv said:
Hello,I have a problem with my HOX, the battery percent is not updating correctly,for example I let the screen on for like 30 minutes and I have NO BATTERY DRAIN, then it suddenly decreases by lets say 10%. This happens all the time on different kernels and roms and I have no idea why. Is my battery damaged? Is there any way to fix this? I calibrated the battery a few with no apparent result. Any oppinons or advices are greatly appreciated.
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Ye you have to put in a new battery. I got recently a new smartphone with a 2600mAh battery and its so awesome ! It drains like 1% in 8hours every night and screen on time of 7-8 hours.
My old HOX battery was crap compared to this, I could literally watch it drain when using mobile network (1% every 3mins on mobile internet) even when it was completely new.
HOX drained on airplane mode up to 10% every night lol.
Hi guys. Im new here. I just wanna share about my Z1 compact latest battery problem kinda frustrated me lately.
I bought the phone 2-3 months ago, already with Android Lollipop 5.0.2. Since the purchase, I didnt really face a problem with the battery life as it lasted about 12 hours per charge due to my heavy usage of the phone.
But a few days lately, my phone being worrying me as the battery doesnt being as normal as always. For example, it can drain the battery drastically from 88% to 67% in a few seconds when the screen is off (in standby mode). Sometimes, in the middle of the usagefrom 39%, the phone suddenly shows the battery low warning with a 1% battery remaining, and without having enough time to reach the charger, it shuts down by itself.
In rare cases, I caught my phone drained the battery drastically when the screen is still on from 15% to 1% less in a minute.
The phone wasnt rooted and I didnt anything else besides my daily normal usage. The latest apps I downloaded before the problem occurred is Waze.
I tried everything to save the battery like using the Stamina Mode, force stops some apps, slides away all of the running apps in the background but failed. I even factory reset my phone and installed all the apps the way it used to be but still didnt solved the problem.
I still have about 8 monts of Sony warranty but I need you guys help first because I need to use my phone for work right now. Please help and reply.
Thank you. *Sorry if my English isnt that good*
When the battery jumps from 39% to 1%... Does it stay a long time at 39%? Or from 39 to 1 in few minutes?
Just curious...
Sounds like a warranty issue to me. You could try to find out what is causing heavy drain like with BetterBatteryStats. But no app ever should cause such drains.
Sound more like your battery is not okay.
welcome to the battery drop bug
http://forum.xda-developers.com/son...ttery-reporting-phone-dying-suddenly-t3095120
https://talk.sonymobile.com/t5/Xperia-Z1-Compact/Sony-Z1-Compact-battery-drop/td-p/990701/page/4
The exactly same problem with me .I have 100% battery and indicator stays 100% for a half hour than drastically drains to 1% and shuts down.
Change your battery! I had the same Problem. I changed my battery with anotherone original from Sony, but a few weeks later the same Problem: quickly battery drain.
So I ordered me a battery from e-bay but NOT one from Sony! Now a few weeks later still NO Problems. Everything runs Ok now. NO battery drain at all.