I just got the rezound and purchased the laza zcell 3240 with it.... Put 4.2.2 ROM on it and drained the battery down.... It won't calibrate. Is there some unknown way to calibrate it
Casey Walt said:
I just got the rezound and purchased the laza zcell 3240 with it.... Put 4.2.2 ROM on it and drained the battery down.... It won't calibrate. Is there some unknown way to calibrate it
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What do you mean "calibrate it"... all you can do with "calibration" is delete/wipe the battery stats file and let the OS rebuild it, it doesn't have anything to do with actually draining the battery, just how it is displayed to you and how run-times are calculated. We have known for some time this really does nothing. http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
If something is draining the battery, you have a rouge app that is holding the wakelock or a defective battery or device... install GSAM, BetterBatteryStats, or Wakelock Detector and figure out what it is.
acejavelin said:
What do you mean "calibrate it"... all you can do with "calibration" is delete/wipe the battery stats file and let the OS rebuild it, it doesn't have anything to do with actually draining the battery, just how it is displayed to you and how run-times are calculated. We have known for some time this really does nothing. http://www.androidcentral.com/wiping-battery-stats-doesnt-improve-battery-life-says-google-engineer
If something is draining the battery, you have a rouge app that is holding the wakelock or a defective battery or device... install GSAM, BetterBatteryStats, or Wakelock Detector and figure out what it is.
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Thanks for the response... i just realized after a few charges that it would drain from 100 to about 20% then things would go haywire it would drain so fast after that. I always monitor voltages with the solo battery widget. it would so how a steady drain down to about 3600mv then it would drop to 3400mv very rapidly... I had a droid bionic that would say it was dead at 3900mv then stay charged for many hours after the opposite is happening with this phone.
Related
Is it necessary to calibrate after flashing a new kernel?
Not really. I found my battery life is better after I flashed the new voodoo kernel by jt. If you do have some bad battery life, it would be suggested you do calibrate your battery.
how do you calibrate your battery also i notice after i charge my battery all nite the next morning i start off with either 99 or 98 percent any reason why???
Calibration of the battery isn't really required if you flash at 100% each time.
mrtonee said:
how do you calibrate your battery also i notice after i charge my battery all nite the next morning i start off with either 99 or 98 percent any reason why???
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This is expected behavior designed to protect the life of your battery. basically what happens is your phone will charge to 100%. It's not good for a li-on battery to stay at that stress level so the phone will then allow the battery to discharge to 95%. Once it hits 95% you will start charging back up to 100% and the process will repeat. If the phone didn't do this the battery would degrade much more rapidly.
Sent from my SCH-I500 using XDA Premium App
thank you some days its good and some days its bad........
So, some of us say that battery calibration is a must after flashing a ROM, while some never calibrate their batter, and few like to calibrate it once every 3-4 months. So it is my request to share your experience and recommendations.
This should be all you need:
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
sweetnsour said:
This should be all you need:
https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT
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Moreover, I've said it before and I'll say it again:
LITHIUM ION BATTERIES DO NOT NEED TO BE CALIBRATED. They have no "memory" effect. There's a charge circuit built into them that constantly monitors the voltage of the battery.
Attempting to calibrate a lithium ion battery will actually cause more wear in a shorter period of time than had you simply left it alone.
Sometimes when you flash ROM to ROM, old batterystats get left behind and mess up the battery. I had a glitch where it said the battery was full but the percentage was only at 92%. I'm not sure if this is a calibration glitch or just a kernel glitch, but calibrating it fixed it.
vj_dustin said:
i prefer wiping battery stats every flash instead of calibrating..
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This is actually one way to calibrate battery.
And calibration means the accurate way to read batt level by ROM, which by any means, cannot harm battery itself.
Not calibrating i had the surprise to wake up with more batt than i went to sleep with. Or, as said here, you can find out that the ROM is indicating you have less batt than you actually do. I goess that is the only thing that can go wrong. Anyways, i only calibrate when flashing new ROM or restorin a backup. And i use BatteryCalibration from market.
I don't know about you guys but everytime I flash a new rom I charge to 100%,reboot in recovery and wipe everything +battery stats.From time to time I prefer to do a calibration process.It's something that i found on lg-p500.ru and works for me.If anyone is interested how I calibrate my battery,look here .
PS*offline charging is required.
theanykey said:
Moreover, I've said it before and I'll say it again:
LITHIUM ION BATTERIES DO NOT NEED TO BE CALIBRATED. They have no "memory" effect. There's a charge circuit built into them that constantly monitors the voltage of the battery.
Attempting to calibrate a lithium ion battery will actually cause more wear in a shorter period of time than had you simply left it alone.
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+1, just search Google, there a lot of explanations on how Li-ion works, found out myself in 2009.
Just read this for crying out-loud How to Prolong Lithium-based Batteries
Edit: just in case you don't get the +1.. ''LITHIUM ION BATTERIES DO NOT NEED TO BE CALIBRATED''
It is recommended that you DONT let your battery fully discharge, ever (it shortens its life) that is one of the reasons android notifies you have a low battery on 20%.
,i think we dont need to calibrate battery,fully discharging may affect battery,thats what ive read in the internet,ahm,by the way i have battery drain now,im using lewa OS m6 + roq XII,my betterbatterystats is ok,it is sleeping,hmm do i have battery drain?,i dont want to calibrate my battery,
For some odd reason my battery icon shows 71%, but if I go to batt status it shows 62%. I flashed a diff batt mod and it changed to the new one, but it's still on 71%. Any ideas how I can make it show the correct status?
EVOme said:
For some odd reason my battery icon shows 71%, but if I go to batt status it shows 62%. I flashed a diff batt mod and it changed to the new one, but it's still on 71%. Any ideas how I can make it show the correct status?
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let the phone run till it dies and then charge it. that should reset the battery gauge.
Legacystar said:
let the phone run till it dies and then charge it. that should reset the battery gauge.
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Will try that....thanks!!!
Never let the battery drain to zero, it's bad for you battery. These aren't the old Ni-Cad batteries from the 80's but Lithium ion batteries If you want to reset the battery stats just download Battery Calibration from the play store. Charge phone to full and then hit Calibrate and it will reset your stats. Unless something is different with the GS4 or their TW OS any newly installed rom should have this done after installation
Here is info on what you should know about today's batteries.
http://batteryuniversity.com/
Eric214 said:
Never let the battery drain to zero, it's bad for you battery. These aren't the old Ni-Cad batteries from the 80's but Lithium ion batteries If you want to reset the battery stats just download Battery Calibration from the play store. Charge phone to full and then hit Calibrate and it will reset your stats. Unless something is different with the GS4 or their TW OS any newly installed rom should have this done after installation
Here is info on what you should know about today's batteries.
http://batteryuniversity.com/
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doing it constantly is bad, once will not effect it.
Eric214 said:
Never let the battery drain to zero, it's bad for you battery. These aren't the old Ni-Cad batteries from the 80's but Lithium ion batteries If you want to reset the battery stats just download Battery Calibration from the play store. Charge phone to full and then hit Calibrate and it will reset your stats. Unless something is different with the GS4 or their TW OS any newly installed rom should have this done after installation
Here is info on what you should know about today's batteries.
http://batteryuniversity.com/
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Click to collapse
The statement about li-ion not being akin to ni-cad is correct. The rest is not.
No app is capable of battery calibration. The myth of wiping battery stats to calibrate the battery was clearly and concisely debunked a year and a half ago. Apps such as Battery Calibration ate pure snake oil, as they do not affect battery indication in any way, shape, or form. Additionally, there is absolutely no benefit to wiping battery stats after flashing a rom.
The fact of the matter, as verified by Battery University, is that a complete discharge/charge cycle is the only method of "calibration" available to an end user. By performing a single cycle, the charge and discharge flags are reset. Only a single cycle is needed and this is something that need be performed more than a few times a year, as it wail shorten the battery's serviceable lifespan.
Sent from my Nexus 7 using Tapatalk HD
Ummm I said if you want to reset you stats not actually calibrate your battery. That app to clear stats is called Battery Calibrator. Never did i say calibrate battery
Eric214 said:
Ummm I said if you want to reset you stats not actually calibrate your battery. That app to clear stats is called Battery Calibrator. Never did i say calibrate battery
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There is a far easier way to clear battery stats. Charge to phone to full or near full, and then unplug it. Voila! Regardless, wiping battery stats is not going to do anything for the op.
Sent from my SCH-I545 using Tapatalk 4 Beta
Well a friend of mine had the same issue with "stuck battery %" and that did the trick soooo just helping out with what worked for another is all. whatever
That actually didn't do the trick, as nothing relevant to reported charge is contained in the file that is wiped. While it may seem logical to ascribe the fix to a proximal act, it is actually a case of post hoc ergo propter hoc.
Sent from my SCH-I545 using Tapatalk 4 Beta
najaboy said:
There is a far easier way to clear battery stats. Charge to phone to full or near full, and then unplug it. Voila! Regardless, wiping battery stats is not going to do anything for the op.
Sent from my SCH-I545 using Tapatalk 4 Beta
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Neither did this. The battery calibrator app did nothing either. My phone is still showing a percent up top that is not what shows in settings/more/battery. More news, my phone showed this morning, after I unplugged it from all night charge, that it had been running on battery for 8 hours 2 minutes. The whole battery status is fubar somehow.
Just let the phone die, it works , and its easy
Legacystar said:
Just let the phone die, it works , and its easy
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That's the only thing I haven't tried. Will do that today. Will report.
Didn't work. Gonna have to dirty flash the ROM.
My S4 (2 months old) dies with the battery at 20%. After reboot (plugged in) it still says 20%. Why does that happen? It should say 0%!
Update
It seems that the battery gives an incorrect fake voltage sometimes. To correct that I turned the camer flash on, using a flashlight utility, and after a few seconds I clicked the quick start button in the battery calibration utility you can access dialing *#0228#.
Now it show 11% that should almost be correct, and it's now charging. I am charging it in slow mode at 500mA just to give it a proper charge.
I'll update you as soon as I have results.
Second Update
Nothing. I think the battery is broken.
It dies at about 20%-30% and when the phone restarts, plugged in, it says it's 20%.
I recently had my Thunderbolt replaced with a refurb from Verizon. When I got the new phone I removed my old battery, which was working fine, from my old phone and placed it in my new phone. Now in the new phone I fully charge the battery and I get about 45 minutes to an hour of battery life before my phone is down to 2% battery life. However, the phone then has the same battery life as it did in my old phone, it just still says there is only 2% battery life left.
I'd tried completely killing the battery then recharging fully for about a week. The battery stats never reset.
I then rooted my phone, charged it completely and purged the battery stats. The issue persists.
Sounds like an aftermarket, non-oem battery...is it?
If it isn't a stock oem battery and especially if running ICS, it will not read correctly.
It may charge and discharge properly, but may never read accurately.
If it is an oem battery, then you got me.
Well i did this thing on my cousin's Htc Amaze a long time ago
i used die hard battrey calibirator to calibrate the battery. the phone was showing 2 percent supposed to be 170 percent so i pressed calibrate button and it worked for about a week until the battery had the same error
try doing that it might do something... or nothing at all but worth a try
santod040 said:
Sounds like an aftermarket, non-oem battery...is it?
If it isn't a stock oem battery and especially if running ICS, it will not read correctly.
It may charge and discharge properly, but may never read accurately.
If it is an oem battery, then you got me.
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Nope, it's the original battery I received with the phone. I'd understand if it were just time for a replacement but the fact that it stays awake at 2% for so long leads me to believe it's not actually an issue with the battery.
If you calibrate the battery incorrectly it can make the phone display the wrong amount. I did this before using die hard battery calibrator. To manually recalibrate. Discharge the phone totally and then charge it until the green light comes on. Boot into recovery and then wipe battery stats in recovery. That might help you out but I somehow doubt itm
Sent from my ADR6400L using Tapatalk 2
I tried using a battery calibration app and haven't seen any change.
I also looked for my batterystats.bin file in /data/system to manually delete using a file explorer but I didn't see it there. Does anyone know why that may be or if that could contribute to the issue?
I also looked for my batterystats.bin file in /data/system to manually delete using a file explorer but I didn't see it there. Does anyone know why that may be or if that could contribute to the issue?
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Disregard that, turns out I didn't have ES File Explorer with root permission.
Li-on batteries don't actually perform the way many people think they do. They do not discharge in a linear fashion. That's what makes metering them on the phone so complicated. As the battery ages it's non-linear output changes as well, and that's what the statistics are designed to correct for when displaying a charge level.
Here's how you know your battery is a dud.
Pay attention to the voltage. As a Li-on battery discharges it discharges in a very flat way. The battery is fully charged when the voltage curve of the battery begins to ramp up sharply. The battery is technically dead when the voltage begins to drop off sharply. What ultimately renders a Li-on battery garbage is when that fat flat spot in it's voltage/charge curve drops below a threshold that will power the device. If the battery is displaying adequate voltage for a reasonable length of time and the phone still reads inaccurate, then it's the fault of the phone.
My phone often switches off at 20-25% and when I put it on charge, it starts charding from the percentage that it went off at. When I restart at 100%, the battery indicator shows 65-70% and I have to put it on charge again.
What seems to be issue here? Is it just the stat which needs caliberation or is it something to do with battery itself?
mayank6002 said:
My phone often switches off at 20-25% and when I put it on charge, it starts charding from the percentage that it went off at. When I restart at 100%, the battery indicator shows 65-70% and I have to put it on charge again.
What seems to be issue here? Is it just the stat which needs caliberation or is it something to do with battery itself?
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You sir, have a worn out battery. It needs replacing if battery life is piss poor.
41LY45 said:
You sir, have a worn out battery. It needs replacing if battery life is piss poor.
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But tell me, wouldn't a piss poor battery go down to the level of 0% before its demise? Why would a phone switch off at 20-25%? And this behavious is also erratic. Sometimes it shows the battery level of 1% before dying and sometimes it just dies at 20-25%.
If you ever flashed a custom software, battery stats issue should be normal. But if you didn't, it could be either bad stats or worn out battery. Find accubattery on play store, use it for few days and check battery capacity there. If it differs much than manufacturer capacity, it is time for change...
In the meantime, check this post by Motorola:
https://motorola-global-en-uk.custh...a/moto-g4-g4-plus/topic/battery/battery-reset
(It is for g4 but I don't see why it shouldn't work for Moto Z)
mayank6002 said:
But tell me, wouldn't a piss poor battery go down to the level of 0% before its demise? Why would a phone switch off at 20-25%? And this behavious is also erratic. Sometimes it shows the battery level of 1% before dying and sometimes it just dies at 20-25%.
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Well it thinks it's at 20-25%, but it can't deliver enough current due to wear.
Remember the iPhone slowdown brouhahah? What Apple did was downclock the processor so it doesn't draw too high from the battery.