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Hi,
I have been facing these two weird issues:
1. Sudden drop in battery percentage: I have found that this occurs only when i reboot my phone (not every time though). So when the phone restarts, the battery is down by 20-30% or sometimes even more. And its not a one time issue. I have seen it happen at least 3-4 times in the last 5 months.
2. Sometimes when I am not charging the phone, the battery % keeps increasing slowly. This has been happening lately since the time I have rooted and flashed my phone. 2-3 occurrences that i know. I don't recall seeing this when I was on stock. Just this morning I plugged my phone off the charger at 52% and I left for work. And right now at this moment when I am writing this, the phone is at 58% charge!!
Just FYI.. I calibrate the battery every time I flash a new ROM.
Thanks,
Sam
sammy.samsung said:
Hi,
I have been facing these two weird issues:
1. Sudden drop in battery percentage: I have found that this occurs only when i reboot my phone (not every time though). So when the phone restarts, the battery is down by 20-30% or sometimes even more. And its not a one time issue. I have seen it happen at least 3-4 times in the last 5 months.
2. Sometimes when I am not charging the phone, the battery % keeps increasing slowly. This has been happening lately since the time I have rooted and flashed my phone. 2-3 occurrences that i know. I don't recall seeing this when I was on stock. Just this morning I plugged my phone off the charger at 52% and I left for work. And right now at this moment when I am writing this, the phone is at 58% charge!!
Just FYI.. I calibrate the battery every time I flash a new ROM.
Thanks,
Sam
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Click to collapse
I think that Entropy can answer this better but I'll still give a try.
[Q] Why these sudden battery level drops after reboot?
[A] The sudden battery drops is a known 'issue'. It's not a bug, it's the way the fuel gauges are designed for i777.
[Q] How to avoid these sudden battery level drops?
[A] Try not to reboot while it's on battery if the battery level is <50%. In that case, if you need to, make sure that the phone is plugged in for charging and then do the reboot. That should prevent those random battery level drops.
[Q] Will using battery calibration apps help?
[A] No, the way the i777 fuel gauges are designed, there is no need of battery calibration apps. The best way to get accurate battery level readings is to allow the battery to go through full 100%->0% battery discharge cycles for atleast 2-3 times. After each full discharge remove the battery, keep it out for a minute or two and reinsert, recharge the phone.
PS: The weird battery charges that violate E=MC^2 law might have to do with your battery not having been through proper discharge cycles (and thus not having been properly calibrated) after flashing a new ROM.
@Mod These questions are asked many times, how about adding them to FAQs (not sure if that will help though )
@Entropy Please review this post.
Pretty close.
Calibration does nothing on our device - the fuel gauge is designed so that it will always converge towards truth instead of diverging. Also, the "wipe battery stats" method of "calibration" has been proven to do NOTHING on ANY device whatsoever - https://plus.google.com/105051985738280261832/posts/FV3LVtdVxPT - The "charge battery to full" and "discharge/recharge" battery are valid tactics on some devices, but NOT any Galaxy S or S II device (maybe the ****rocket and T989, but not the I9100 or I777.) - There's a slight chance this may change with ICS on the I9100/I777 but not likely.
The advantage of this is that it never needs funky calibration cycles other than "just wait"
The disadvantage is that the gauge will get thrown off in a few limited corner cases - and the "two" issues described are one widely documented one. The gauge gets confused and falseley reports low by heavily battery load immediately following a reset, and takes a few hours to converge back to normality (during which the estimate creeps upward, because it was lower than reality initially).
And yeah this should probably be in the FAQ. I'll work on submitting it this weekend.
Thanks guys..
So looks like the sudden battery drop issue can only be prevented but not fixed!
sammy.samsung said:
Thanks guys..
So looks like the sudden battery drop issue can only be prevented but not fixed!
Click to expand...
Click to collapse
It's pretty much the characteristics of putting a battery under load and using voltage to dictate battery level. when you draw a lot of current from a battery you'll usually see the voltage level drop, more so as the battery is discharged. Booting up the phone consumes quite a bit of power, substantially more than the device at idle. So upon start up the device reads the voltage level to dictate battery level. Since the device is under a relatively high power draw, it sees a lower voltage than would be at idle. It in return thinks the battery is lower than it actually is, or would read under idle load. the battery level will actually creep back up slowly because it will read a higher voltage, than it did upon start up.
The only way i could think of to get a more accurate reading would be to delay the initial voltage reading/recording upon start up, or to use the last voltage reading to help dictate the battery level. But i have no idea if that's even possible, or if it would conflict with some sort of other operation.
I just don't get it!!!!!!!
I was playing multiplayer in bombsquad today morning wid my friend .My battery was @ 86% at that time
suddenly my battery came down to 15% then in the other moment it went to0% and mt phone got shut down. I plugged my phone in charge through the power bank and rebooted it and I saw my phone was @52 % I started using my phone and it again suddenly sut down this time without even a battery low message
it's been happening regularly wid my phone since then.
What could be the reason? And what can I do to make it right?
MY PHONE INFORMATION
MODEL:SAMSUNG GALAXY CORE GT I8262
ROM:USING STOCK ROM(ROOTED) (CWM RECOVERY INSTALLED)
avijeetpandey87 said:
MODEL:SAMSUNG GALAXY CORE GT I8262
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This is the wrong forum. Even though the thread is about a problem similar to yours, we don't know anything about your phone.
If you have a removable battery, you might try purchasing a new battery, but that's just a guess.
The forums for you phone are here.
hi guys , i got some problem with the information displayed for my razr maxx. the thing is the battery usage curve won't change for the first 10% of power drain, and the awake bar and screen on bar are full. but when the battery drops to 80% and below, the curve starts to count from the 80% position, what is going on? how can i fix it ?
here is the screenshot
How many times have you already charged that battery from 0% to 100% and drained it back again to 0%?
Seems like a simple calibration issue that should have no effect in real world battery performance.
Had that too. If you want to know more about this, look up "batterystats.bin".
So, if you haven't done what I said in the first line, do it and report back.
i have tried delete the .bin file bwfore, nothing changed. i think i will try to charge it from 0to 100again see if there will be any change. btw will the battery calibration apps solve this?
http://www.xda-developers.com/andro...-battery-stats-does-not-improve-battery-life/
Read that. You don't have to do anything, just let your razr get some charge cycles and the readouts will be right. Remember: There is no need to tinker with this, as this has no effect except for cosmetic terms.
thanks for the information. one more thing, the battery indicator always shows that the screen on and awake time are the same, even after i turn off the screen and play music for an hour. is this normal? or the system keeps recognizing the status of the screen as on? how should i deal with this?
I would just wait a few days (read: charge cycles) and look again. Indeed strange, but if your battery doesn't get drained this also seems just to be another cosmetic issue.
actually it seems it has been more energy draining than before. it wouldn't drop 1% when i turned on flight mode at night and checked it in the morning. but now even i turn on flight mode it drops about 5% next morning.
roroy23 said:
actually it seems it has been more energy draining than before. it wouldn't drop 1% when i turned on flight mode at night and checked it in the morning. but now even i turn on flight mode it drops about 5% next morning.
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Don't count on the battery percentage today. Look again tomorrow/after some charge cycles.
The battery readouts need to be calibrated to display the correct battery level.
I had the same "issues" (in fact, those don't seem to be real issues) and they went away. I assume your razr will behave the same as mine
Is the phone still new? I know mine was a little wonky until the charging and the meter apparently calibrated themselves to Maxx's battery Ever since, it's been very accurate.
yes it is still new. i got it about half a month ago. just got it charged to 100% from 0%. gonna see what will happen。
Since Sunday my Aria has started heating up weirdly. When charging and while using, there is tremendous heating in the area right behind the optical touchpad.
Also the battery is not charging properly and discharging quickly.
I first thought it may be a battery problem, but wanted some genuine views regarding this.
Will changing my battery remove this issue? Has anyone faced anything similar?
There will always be heat around the touchpad whenever you are charging while using it. Happens to me all the time at least. Unless your battery exceeded 45 degrees Celsius, then that's abnormal.
You can track your battery stats for example, heat with apps in Market.
You said it discharges awfully quickly. Mind telling me, how long does it take for it to discharge from 100% to below 10%?
Really quickly.
For example, I charged the phone whole night from a wall charger, while switched off.
In the morning, I turn on the phone, it shows me 19% battery. I rebooted: 8%. Rebooted again: 2%. This all happened in about 5 minutes after taking the phone off the charger.
The phone used the 2% battery for about 15 minutes on standby, with no internet, before dying.
Now it does not even turn on. The battery is definitely gone, since it has bulged a bit. But I want to be sure before buying a new battery, if the new battery will face the same fate or not.
For now, I have given the phone to my brother who will test the battery in his phone. Let's see.
There's definitely a problem with the battery. It is advised you do not charge a faulty battery. It may damage your device or worse, explode depending on what the fault may be.
plade said:
But I want to be sure before buying a new battery, if the new battery will face the same fate or not.
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New battery should fix the problem. There's no reason to suspect that the phone is causing the problem.
Hello, I've started having some weird battery issues with my HTC One X+, wonder if anybody else has seen this before. I've attached a screenshot of the battery graph for my phone, so you can see what I've been encountering.
It all started two days ago, when my phone charged down and shut off, despite being idle and connected to my laptop for USB charging the whole time. Since then, I've been seeing all kinds of wacky behavior with the battery stats. The status has been stuck on "11M 19S ON BATTERY" for the last three days. It discharges really fast even when idle, which it wasn't doing before. Last night, the battery chart shows the phone either being awake or with the screen on, but it is wrong: the phone was turned off.
I turned it off almost all of today, turning it on maybe 2-3 times just to check the charge and then immediately turning it off, and connected it to AC charging the whole time, but the battery charge seems to go up and down during that period! At this point, my battery stats seem completely corrupted, except for the fact that the phone does shut itself off when the charge goes to zero, so the total charge may be correct.
I'm not sure if this is a software issue or hardware, as I seem to be getting strange data from the software. I looked at many of the battery threads in this forum: they say to charge the phone to green and discharge a couple times, but I cannot get it to go to green again, even with the phone turned off and AC charging! I should still be covered by the 1-year manufacturer warranty: do I need to send it in for repair or this is some known software issue that I can fix myself? I'm running stock unrooted Android 4.2.2 Sense 5 on the international unlocked HOX+.
joakim_one said:
Hello, I've started having some weird battery issues with my HTC One X+, wonder if anybody else has seen this before. I've attached a screenshot of the battery graph for my phone, so you can see what I've been encountering.
It all started two days ago, when my phone charged down and shut off, despite being idle and connected to my laptop for USB charging the whole time. Since then, I've been seeing all kinds of wacky behavior with the battery stats. The status has been stuck on "11M 19S ON BATTERY" for the last three days. It discharges really fast even when idle, which it wasn't doing before. Last night, the battery chart shows the phone either being awake or with the screen on, but it is wrong: the phone was turned off.
I turned it off almost all of today, turning it on maybe 2-3 times just to check the charge and then immediately turning it off, and connected it to AC charging the whole time, but the battery charge seems to go up and down during that period! At this point, my battery stats seem completely corrupted, except for the fact that the phone does shut itself off when the charge goes to zero, so the total charge may be correct.
I'm not sure if this is a software issue or hardware, as I seem to be getting strange data from the software. I looked at many of the battery threads in this forum: they say to charge the phone to green and discharge a couple times, but I cannot get it to go to green again, even with the phone turned off and AC charging! I should still be covered by the 1-year manufacturer warranty: do I need to send it in for repair or this is some known software issue that I can fix myself? I'm running stock unrooted Android 4.2.2 Sense 5 on the international unlocked HOX+.
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I thought I'd update with the latest. After a couple days of freaky battery behavior, I was finally able to get the HOX+ fully charged again, after which the problems went away, still no idea what caused it in the first place. I wanted to make sure it really went away before posting: it hasn't recurred in the weeks since.
I fell asleep last night with a podcast playing on my HOX+ at the lowest volume setting and held next to my ear, woke up this morning with only 50% battery used after 12 hours of almost continuous mp3 playback. I've always been impressed with how little battery this device uses while playing mp3s, still going strong. :victory:
Sigh, spoke too soon, it's constantly discharging again, no rhyme or reason why, and the charger can't keep up. The weirdest part as always is that it can't even recharge while turned off, implying there's a short circuit or something else wrong with the hardware. I'll see if I can get it to charge eventually, may have to turn it over to HTC this time.
Hi all,
I've been having a wierd problem with my gs2 battery recently. It keeps on saying that it's charging however the battery is never increasing, it actually starts to decrease even though it says it is charging. It occasionally likes to turn on and off automatically. Recently, it has only charged when the battery is on 0%, I usually leave my phone charging overnight and when I can get the charger to work, I wake up and it says 100% but really, when I turn it on it says 85% or significantly lower. Sometimes, like now, it decides to work whilst it's on but this is not always the case, that is why I am not sure if it's a port problem. I have tried different chargers and some decide to charge the phone but continously turn on and off (on the off screen, battery charging picture appears and then reloads etc.), others don't work at all. I am not using a stock battery however my stock battery charges okay but is very weak (only last like 2-3hrs even when I'm not using it) and the current one lasts a long time once I nanage to get it to 100%. I have tried different online solutions such as taking the battery out for 10 secs, put phone on charge then put battey back in etc . and it hasn't worked. There have been times where the battery has crashed from 70%+ to 8% whilst it's off which seems wierd. I have attached some battery status images. Has anyone had this issue before? I would really appreciate any help or solutions you know that may work.
Replace battery first, if problem persists replace USB board/port (replacing battery should fix it though) - KeithRoss39 has a guide in General (search for 'Replace USB charger board') which will enable you to do it yourself quickly/easily/cheaply if replacing battery doesn't fix it.