... I just have some things I'd like a little assistance with if possible.
1. Because the battery has over double the capacity of the stock battery, I wasn't expecting even close to sensible battery reports from Android. However, I wasn't expecting it to last for a long time, drain at a rational rate, and then halt at 1% for 6 or so hours. I have no way of predicting how much time I have left when I reach that 1% mark, and it literally just shuts off the phone without warning, as if I just unplugged the battery. Is there any way to adjust anything so that It properly reports the battery charge value from 100-1%?
2. I have no idea how long to charge this phone. Obviously the stats of the stock battery are hardcoded into the OS; after the phone shuts off, I'll put it on to charge, it will enter the charge-only-mode (which is weird to me in itself, thought the custom bootstrap overwrote this?), and it will only take a couple hours to reach 100%. This is about how long it took for me to charge the stock battery. Anyway to have the phone properly display the current charge while in its charge only state? I'm afraid of not properly cycling the battery if I don't charge it long enough, or even worse, damaging the battery by charging too long. After it hits 100%, assuming I am correct in that it still needs to charge after reaching that mark, will the phone even accept more power from the charger? As silly as it might sound, that sorta made sense to me. If the phone is incorrectly measuring the battery at that point, shouldn't it cease to charge after reaching what it thinks/I] is a proper 100%?
3. If there is no way to fix the issue in #1, I read somewhere you can measure the voltage of a battery and know when the phone is fully charged or about to die based on that voltage? At least I think it was voltage.
I've calibrated, don't bother asking. That has never worked, even on stock; I'm convinced its a myth, but that's a discussion for another thread.
By the way, Eclipse ROM's battery life sucks. Anyone stating otherwise is misinformed. The best battery life I ever experienced was on stock 2.2, followed very closely by Liberty 3 ROM. I have no idea why Eclipse has such terrible battery drain, though I would be interested if anyone knows. I've gone through two phones, their respective batteries, and now my third battery, the monstrosity that is the 3200mah, so please don't bother trying to convince me that Eclipse has better battery than some alternatives. It sucks. I'll be downgrading back to 2.3.4 and flashing Liberty right after I finish writing this.
Thanks to anyone who can help!
Also, I've been following the Droid X2 bootloader status for like 6 months. Realistically, how close are we to being able to flash a new kernel? An I'm pretty sure we can't crack to bootloader anyways. I remember calculating the possible combinations of keys Motorola could have used; it was a massive number. In that case, how would hijacking the boot process allow us to use Cyanogen? If we can't crack the bootloader and then flash the CM kernel, wouldn't it just be a glorified version of Eclipse? I don't even like Eclipse. Lawl.
I'm done typing. My sexy computer comes tomorrow; crossfire 6990's here I come! Need to get to sleep so I can all-night-hardcore-no-life play BF3 with Shibby tomorrow. I hope someone on these forums knows who that is.
You need to boot into clockwork recovery. Go to advanced and hit clear battery stats. after that fully charge and discharge your battery 4 times and that should fix you up.
Sent from my SGH-T959V using XDA App
Oh sorry. Didn't realize cw hasn't been released for your phone yet. Have you tried deleting the batterystats.bin file manually. I believe there is also an app for this on the market.
Sent from my SGH-T959V using XDA App
I have the same battery that you do with this phone, although I don't use the phone anymore.
You can NOT make Android read the battery correctly. You are in the dark.
Calibrating will NOT, as you've already found out, fix battery reporting.
I used to gauge when it was going to die by looking at mV left. Around 3500mV is when it would die. Get Battery Indicator from market to find out mV.
Oh, and: 4.2V = 4200mV etc
hampsterblade said:
Oh sorry. Didn't realize cw hasn't been released for your phone yet. Have you tried deleting the batterystats.bin file manually. I believe there is also an app for this on the market.
Sent from my SGH-T959V using XDA App
Click to expand...
Click to collapse
I appreciate the understanding you have of my situatition, for, clearly, you have thoroughly read what I wrote.
donlad said:
I have the same battery that you do with this phone, although I don't use the phone anymore.
You can NOT make Android read the battery correctly. You are in the dark.
Calibrating will NOT, as you've already found out, fix battery reporting.
I used to gauge when it was going to die by looking at mV left. Around 3500mV is when it would die. Get Battery Indicator from market to find out mV.
Oh, and: 4.2V = 4200mV etc
Click to expand...
Click to collapse
I figured as much. For a multi-billion dollar investment, you would think Google and its partners wouldn't overlook something so silly, not to mention locking our ****ing bootloader.
Anywho, I'll try out that app. Is 4.2V a full charge for the 3200?
Thanks!
This is a known issue with the droids. Some have had success with the batteryleft widget which can learn the full capacity of the battery.
Also not googles fault. This one is only Motorola's issue.
Sent from my SGH-T959V using XDA App
Related
I got an replacement due to my phone beyond repair.
I'm running original stock firmware, of-course rooted. Since the replacement I'm trying to get my phone to full charge but it doesn't and also I notice that the charging is quite slow.
I installed "Battery Monitor Widget" to see how much power it is drawing and found that AC power draws only about 350+mA and sometimes it is as low as 8mA. (Some times it draws about 750+mA). I notice that the temperature also reaches somewhere about 45 to 48 degree.
Once it reaches about 90% or so, it starts to drain battery instead of charing it.
I find it quite abnormal. Anyone with this kind of problem and found an solution?
Thanks in advance for the replies and suggestions.
What I'd sudjest is updating your phone through seus or PC companion or if your an American at & t user update to a newer firmware through the flash tool (you can find I link to it through my signiture) or if you can't update try and use the repair option through seus or PC compainion.
Sent from my X10 using XDA Premium App
The Gingerbread Man said:
What I'd sudjest is updating your phone through seus or PC companion or if your an American at & t user update to a newer firmware through the flash tool (you can find I link to it through my signiture) or if you can't update try and use the repair option through seus or PC compainion.
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
Thanks for your reply.
I did that yesterday. I repaired the firmware and reloaded all the application one by one from scratch. The only thing I restored is contacts so that I could eliminate all the other factors which can cause this issue.
My other suggestion would be to install xrecovery and wipe your battery stats I guess. You can find a link to xrecovery through the link in my sig
Sent from my X10 using XDA Premium App
The Gingerbread Man said:
My other suggestion would be to install xrecovery and wipe your battery stats I guess. You can find a link to xrecovery through the link in my sig
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
Thanks once again for the reply.
I tired that too every time I try to charge the phone. Still it refuses to complete the charging.
Any other suggestions are welcome.
What about off line charging ie; turning the phone off and doing that way?
Sent from my X10 using XDA Premium App
The Gingerbread Man said:
My other suggestion would be to install xrecovery and wipe your battery stats I guess. You can find a link to xrecovery through the link in my sig
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
+1 it helped me off this problem
Sent from my X10i using XDA App
The Gingerbread Man said:
What about off line charging ie; turning the phone off and doing that way?
Sent from my X10 using XDA Premium App
Click to expand...
Click to collapse
Good idea. I will try that as well as try to do a clean wipe and just try to charge with nothing loaded in. That will give a better idea where the problem is.
Thanks for the great tip, I will update you tomorrow.
Had that happen before, I had to remove sim card and let it drain out slowly for a week, then charge. Problem solved
I think I had similar problem, except that my processor went on full load when its almost fully charged causing it to drain the battery instead. Still lookin for answer to that, will wiping battery stats help?
I reset my phone to factory and did a re-flashing again using SEUS and I tried it charging immediately without loading any application (only loaded Battery Monitor Widget from Market to see the battery temperature and mA units drawn) and wow, it charged like a normal X10. So I guess it has something to do with whatever I loaded or modded it with.
I'm trying to find it out. Later tonight I will try to load all the application one-by-one and try again to charge to see whether I can isolate it.
During this process, I did takeout my SIM card for a period of 1 hour or so, so not sure whether that did the trick (If that's the case, thanks to gogogu)
In the meantime, I have a strong feeling it would be due to the flashtool and new recovery, but again there isn't any proof. I suspect this because this is the new thing I did compared to my old phone.
Any thoughts are welcome.
Monitor the CPU usage as well
zymphonyx said:
Monitor the CPU usage as well
Click to expand...
Click to collapse
I don't have issues with processor. It works at full throttle when it supposed to work and then goes back to normal.
Hrmmm alright, but if you ever had the draining issue while charging and the battery temp rises up again. Check the CPU usage just incase
After yesterday's event, seems like stable (I did face the same issue once). Not sure which cured it and currently monitoring...
EDIT: Back to square one. The issue started again and the battery refues to fully charge! I'm going mad
Finally given up, sent for service and came back after 5 days of repair.
Repair Notes: No problem found !!!
But today morning I tried to charge and it's the same issue . Makes me go mad. Really, I don't know what to do!
Please help me friends .......
I too have exactly the same problem with my x10i.....
tried everything like rooting, using stock & custom ROMs, etc... still problem persist ...
while charging , power goes from 900mA to 200mA or lower, & doesn't reach 100% full...
i use current widget from market to read the power values ....
please help me friends .... to resolve my problem ...
Thanks a lot...
Makzer.
nobody replying
hello mates...
please reply to my problem dear friends ..
looking forward ...
LiveSquare said:
I got an replacement due to my phone beyond repair.
I'm running original stock firmware, of-course rooted. Since the replacement I'm trying to get my phone to full charge but it doesn't and also I notice that the charging is quite slow.
I installed "Battery Monitor Widget" to see how much power it is drawing and found that AC power draws only about 350+mA and sometimes it is as low as 8mA. (Some times it draws about 750+mA). I notice that the temperature also reaches somewhere about 45 to 48 degree.
Once it reaches about 90% or so, it starts to drain battery instead of charing it.
I find it quite abnormal. Anyone with this kind of problem and found an solution?
Thanks in advance for the replies and suggestions.
Click to expand...
Click to collapse
What program do you use to check your battery temperature. I rememeber there was one that wass bettery draining. The same is also possible with battery level monitor
Sent from X10
Use this tool forum.xda-developers.com/showthread.php?t=1415600
Please read this. There is a lot of batt info on xda just search
http://forum.xda-developers.com/showthread.php?t=871051
I realize that much of this is common knowledge on XDA. Still, every day I see people post about how their phone "loses" 10% as soon as it comes off the charger. I also have friends who can't understand why their battery drains so quickly. Trying to explain this to people without hard numbers is often met with doubt, so I figured that I'd actually plot it out with real data.
So it's not a piece that is optimized for this audience, but I hope that you find it interesting.
--------------------------------------------------
Your Smartphone is Lying to You
(and it's not such a bad thing)
Climbing out of bed, about to start your day, you unplug your new smartphone from its wall charger and quickly check your email. You've left it plugged in overnight, and the battery gauge shows 100%. After a quick shower, you remember that you forgot to send your client a file last night. You pick up your phone again, but the battery gauge now reads 90%. A 10% drop in 10 minutes? The phone must be defective, right?
A common complaint about today's smartphones is their short battery life compared to older cell phones. Years ago, if you accidentally left your charger at home, your phone could still make it through a weeklong vacation with life to spare (I did it more than once). With the newest phones on the market, you might be lucky enough to make it through a weekend.
And why should we expect anything else? Phones used to have a very short list of features: make and receive phone calls. Today we use them for email, web surfing, GPS navigation, photos, video, games, and a host of other tasks. They used to sport tiny displays, while we now have giant touch screens with bright and vibrant colors. All of these features come at a cost: large energy requirements.
Interestingly enough, improvements in battery management technology have compounded the average user's perception of this problem. Older phones were rather inelegant in their charging behavior; usually filling the battery to capacity and then switching to a trickle current to maintain the highest charge possible. This offered the highest usage time in the short-term, but was damaging the battery over the course of ownership. As explained at Battery University, "The time at which the battery stays at [maximum charge] should be as short as possible. Prolonged high voltage promotes corrosion, especially at elevated temperatures."[1]
This is why many new phones will "lose" up to 10% within a few minutes of coming off the charger. The reality is that the battery was only at 100% capacity for a brief moment, after which the battery management system allowed it to slowly dip down to around 90%. Leaving the phone plugged in overnight does not make a difference: the phone only uses the wall current to maintain a partial charge state.
To monitor this, I installed CurrentWidget on my HTC ADR6300 (Droid Incredible), an app that can log how much electric current is being drawn from the battery or received from the charger. Setting it to record log entries every 10 seconds, I have collected a few days worth of data. While many variables are involved (phone hardware, ROM, kernel, etc) and no two devices will perform exactly the same, the trends that I will describe are becoming more common in new phones. This is not just isolated to a single platform or a single manufacturer.
Chart 1 shows system reported battery levels over the course of one night, with the phone plugged in to a charger. Notice that as the battery level approaches 100%, the charging current gradually decreases. After a full charge is reached, wall current is cut completely, with the phone switching back to the battery for all of its power. It isn't until about two hours later that you can see the phone starts receiving wall current again, and even then it is only in brief bursts.
The steep drop in reported battery seen past the 6.5 hour mark shows the phone being unplugged. While the current draw does increase at this point (since the phone is being used), it still cannot account for the reported 6% depletion in 3 minutes. It should also be obvious that maintaining a 100% charge state is impossible given the long spans in which the phone is only operating on battery power.
Using the data from CurrentWidget, however, it is quite easy to project the actual battery state. Starting with the assumption that the first battery percentage reading is accurate, each subsequent point is calculated based on mA draw and time. Chart 2 includes this projection.
Now we can see that the 6% drop after unplugging is simply the battery gauge catching up with reality.
The phone manufacturers essentially have three choices:
1. Use older charging styles which actually maintain a full battery, thereby decreasing its eventual life
2. Use new charging methods and have an accurate battery gauge
3. Use new charging methods and have the inaccurate battery gauge
Option one has clearly fallen out of favor as it prematurely wears devices. Option two, while being honest, would most likely be met with many complaints. After all, how many people want to see their phone draining down to 90% while it is still plugged in? Option three therefore offers an odd compromise. Maybe phone companies think that users will be less likely to worry about a quick drop off the charger than they will worry about a "defective" charger that doesn't keep their phone at 100% while plugged in.
Bump It. Or Should You?
One technique that has gained popularity in the user community is "bump charging." To bump charge a device, turn it off completely, and plug it into a charger. Wait until the indicator light shows a full charge (on the ADR6300, for example, the charging LED changes from amber to green) but do not yet turn the device back on. Instead, disconnect and immediately reconnect the power cord. The device will now accept more charge before saying it is full. This disconnect/reconnect process can be repeated multiple times, each time squeezing just a little bit more into the battery. Does it work?
The following chart plots battery depletion after the device has received a hefty bump charge (6 cycles) and then turned on to use battery power. Note that the system does not show the battery dropping from 100% until well over an hour of unplugged use, at which point it starts to steadily decline. Again, however, it should be obvious that the battery gauge is not syncing up with reality. How could the rate of depletion be increasing over the first 5 hours while the rate of current draw is relatively steady? And why does the projected battery line separate from the reported levels, but then exactly mirror the later rises and falls?
The answer, of course, is that bump charging definitely works. Rather than anchoring our projected values to the first data point of 100%, what happens if we anchor against a later point in the plot?
Aligning the data suggests that a heavy bump charge increases initial capacity by approximately 15%. Note that the only other time that the lines separate in this graph was once again when the phone was put on the charger and topped up to 100%. Just as with the first set of graphs, the phone kept reporting 100% until it was unplugged, dropped rapidly, and again caught up with our projections.
So what does it all mean?
If you absolutely need the highest capacity on a device like this, you will need to bump charge. There are currently people experimenting with "fixes" for this, but I have yet to see one that works. Be warned, however, that repeated bump charging will wear your battery faster and begin to reduce its capacity. If you are a "power user" who will buy a new battery a few months from now anyway, this presumably isn't a concern. If you are an average consumer who uses a device for a few years, I would recommend that you stay away from bump charging. The bottom line is that you don't really "need" to do it unless you are actually depleting your battery to 0% on a regular basis.
If you are someone who can top off your phone on a regular basis, do it. Plug it in when you're at home. Plug it in when you're at your desk. As explained by Battery University, "Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory."[2]
Beyond that, the best advice I can offer is to stop paying such close attention to your battery gauge and to just use your phone. Charge it whenever you can, and then stop obsessing over the exact numbers. If you really need more usage time, buy an extended-capacity battery and use it normally.
From my XPERIA X10S v8.2 on JaBKerneL @ 1.15ghz
Regardless of any calibration method i try, i can never get an accurate battery reading. (Before i continue, ill point out that every app ive used to check my battery health has said "good")
Ive tried calibrating with/without the calibration app. Ive tried just deleting the batterystats via rootexplorer. ive tried calibrating before/after cycling. nothing seems to work.
the reason i know its not working, is because i will calibrate/cycle. lets say ill start a day with 100%. ill unplug my phone, leave for work, and use my phone moderately to feel out the battery drain. then at some point, ill plug it into my charger at work......just now, for example, after three hours of use my phone went from 100%-71%....i went to charge it, and once i plugged it in my percentage display changed from 71% to 63%!!! my percentage will constantly jump up and down throughout the day when i plug/unplug my phone.
anyone else experience this?
PS - its not ROM or kernel, its been happening to me for the last 2-3 months...ive flashed several roms/kernels in that timespan, and have ODINed at least once.
PPS - Ill also add that when i unplug my phone to start my day (after its been charging all night), it will stay at 100% for about 30-45min, at which point it will then start draining on an average of 1%/10min. i feel this may have something to do with it.....does it have something to do with me calibrating at too high of a voltage??
Well as for your inaccurate battery readings, i would suggest that you to odin back to stock and. Leave the phone to charge for 4hours(the time my phone takes to charge from 0-100%)then use the battery calibration app or wipe battery stats via cwm. And as for the draining it might be corrected after you calibrate it.
I know this coz I have experienced this in the past and i'd lose around 1% every 20-25mins now.
Sent from my SGH-T959 using XDA App
stanton93 said:
Well as for your inaccurate battery readings, i would suggest that you to odin back to stock and then use the battery calibration app or wipe battery stats via cwm. And as for the draining it might be corrected after you calibrate it.
I know this coz I have experienced this in the past and i'd lose around 1% every 20-25mins now.
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
please read OP
UPDATE: i just rebooted my phone at 56%....it booted up and it displayed 24%......wtf is this
You said you've ODIN'd like once.... dude, if you aren't going to be cool with suggestions, esp the most obvious ones, not sure what it is you expect from us.
Should I hit thanks? JK
Call T-Mo and tell them and get a new battery.... they WILL give you one.
the best way to calibrate ur phone and its worked perfect for me. Charge it to 100% and then unplug it and as soon as unplug it go to sgs tools and run apply script and inside apply script there is delete battery stats. Click on that and it will take less then 10 sec and ur battery will be running great. Now this works great on my phone i hope it works on urs nicely.
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
s15274n said:
You said you've ODIN'd like once.... dude, if you aren't going to be cool with suggestions, esp the most obvious ones, not sure what it is you expect from us.
Should I hit thanks? JK
Call T-Mo and tell them and get a new battery.... they WILL give you one.
Click to expand...
Click to collapse
So if i clearly state in the OP that it was happening to me before and after ive ODINed, and someone says you should ODIN...thats not a lazy suggestion?
or if someone says to try calibrating, when I stated several times in the OP that ive tried multiple calibration methods...thats not a lazy suggestion?
What i expect is if ive pointed out that ive already taken troubleshooting steps, then dont suggest those troubleshooting steps. no one is forcing a response, so if you dont know, simply dont answer. dont just read the title, skim the post, and give programmed suggestions.
theres absolutely nothing wrong with trying to seek out answers other than the conventional ones. ODIN and reflash are the laziest responses......granted, they will often fix problems, but there may be other ways to solve certain issues.
The goal of my OP was to see if anyone else had experienced it, and if someone responded affirmatively, i would ask them about their calibration methods and we could brainstorm. I would much rather seek out problem-solving knowledge before resorting to ODIN/reflash/new battery/new device...which teach nothing.
movieaddict said:
the best way to calibrate ur phone and its worked perfect for me. Charge it to 100% and then unplug it and as soon as unplug it go to sgs tools and run apply script and inside apply script there is delete battery stats. Click on that and it will take less then 10 sec and ur battery will be running great. Now this works great on my phone i hope it works on urs nicely.
Click to expand...
Click to collapse
This is typically the method i use. i usually let it charge for an hour or so beyond when it reaches 100%, just to ensure i have a full charge. this has not worked for me. i also take it a step further and let my phone discharge all the way until it dies, let it charge overnight when powered off, then ill wipe the battery stats first thing when i wake up.
}{Alienz}{ said:
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
Click to expand...
Click to collapse
i will definitely read this...this is something ive always been very curious about
}{Alienz}{ said:
At your PPS: This is completely normal and expected battery behaviour. It SHOULD happen. Here is why
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
Please read this article fully to understand why it happens and why it SHOULD happen. As for your plug/unplug deviations...I have seen those but it has rarely been more than 2-3% difference which is around the normal range. It sounds like a bad calibration issue to me but then again I can't be sure, especially if you said you have done a calibration correctly. You can try a new battery like the poster above me suggests.
Click to expand...
Click to collapse
this was an extremely informative read. it doesnt shed light on all of my problems...but it definitely explains the longer battery life upon unplugging in the morning. my only question is how am i getting that extra juice when im not actually "bump charging"...i just plug it in when i go to bed, and unplug it when i wake up.....maybe my phone doesnt stop sucking in a charge the moment it hits 100%?
i agree with what he says about not paying too much attention to your battery.....but when its bouncing up and down by 20% increments, thats cause for concern haha. im going to calibrate one more time tonight, and i i get similar results i will swap batteries with another vibrant user.
do you guys suggest deep cycling, before or after wiping battery stats? (or should i just wipe stats at a full charge, and not deep cycle at all) >>> there seems to be different opinions on deep cycling throughout XDA
I have had a similar issue. After flashing Roms, plyugging and unplugging it was jumping by a good 10-15%. This turned out to be a simple bad calibration. Normal jumping should be up to 2%, more than that usually indicates bad calibration. Granted, normally nowdays, mine does not jump at all.
I recommend cycling it fully empty. That means, go ahead and drain to 0. Then let it shut off. Then turn it on again. Keep turning it on till it STOPs being able to turn on. Then charge it completely. Don't charge overnight as that will charge to 90-95% as the article suggested. Charge it while you're awake so you see when it hits 100%. It's even preffered if you charged it while the phone is off. After it hits 100%, give it another hour on the charger. You can even bump charge to ensure it hits full charge. To bump charge, after it's full, disconnect and reconnect the charger every 20 minutes for that last hour you're charging. Then unplug it, boot into recovery using the 3 buttons. Wipe the battery stats from there. Boot normally into your ROM. See if it is still jumping by 20%. Worst case scenario should be a 5% jump. Let us know what happens.
^ See, there is my confusion... there is a great example of how to calibrate, but the OP seems to get in a tiffy for offering up a suggestion he has done (calibrating). I'd also be cautious about the bump charging as that will really hurt the battery. I'm not one to try and get something for free, but why not just get a new battery?
s15274n said:
^ See, there is my confusion... there is a great example of how to calibrate, but the OP seems to get in a tiffy for offering up a suggestion he has done (calibrating). I'd also be cautious about the bump charging as that will really hurt the battery. I'm not one to try and get something for free, but why not just get a new battery?
Click to expand...
Click to collapse
I support the new battery notion too. It's FREE.
Drain your phone til its dead.... charge it up full.... run a battery calibration app on the market and let it die fully again then charge to 100 percent one last time... good to go!
You might even try using a differnet battery
TopShelf10 said:
Regardless of any calibration method i try, i can never get an accurate battery reading. (Before i continue, ill point out that every app ive used to check my battery health has said "good")
Ive tried calibrating with/without the calibration app. Ive tried just deleting the batterystats via rootexplorer. ive tried calibrating before/after cycling. nothing seems to work.
the reason i know its not working, is because i will calibrate/cycle. lets say ill start a day with 100%. ill unplug my phone, leave for work, and use my phone moderately to feel out the battery drain. then at some point, ill plug it into my charger at work......just now, for example, after three hours of use my phone went from 100%-71%....i went to charge it, and once i plugged it in my percentage display changed from 71% to 63%!!! my percentage will constantly jump up and down throughout the day when i plug/unplug my phone.
anyone else experience this?
Topshelf, I have run into these problems, There are a couple of things that cause the battery to be wonky.
1st Samsung has the battery set not to 100% but actually less (95-98%) so when it is charged and reads 100% as soon as you unplug you get a immediate reading of 95-98% (nice huh?)
The dev/mods, and others have tried to rectify this. No one has found an exact fix for this. On thing I have found that does help is to charge to 100% then unplug and then plug into the computer and recharge back to 100% (the lower milliamp off the computer seems to allow you to get to a higher percentage). Then calibrate. Now when you do that the battery calibration/battery widget/and phone All will read more close (for me +/-3%). This is one of the issues you raised.
The other is the battery drain, with some of the custom roms the gallery seems to one of the culprits, mms sometimes stays on with others and some others that are in TSR but instead of being asleep they are taking resources.
I have used systems panel to trouble shoot and that has helped me. I think you may want to ask Explodingboy70, Roman or whitehawkx, they know more on this and maybe can help.
Hope you get it solved......... stay with it you will........... I did.........
PS the mv setting for the battery is supposed to be 4200mv mine never gets above 4196mv
Click to expand...
Click to collapse
i guess a picture is worth a 1000 words... have a look...
more pix for ur eyes ^_^
If your rooted, try battery calibration. Plenty of threads about, and varying methods.
If not, another battery, and if new, ensure charge fully, phone off, overnight, before first boot.
Sent from my GT-I9100 using xda premium
forgot to mention i'm running [Rom]Wanam v3.2 at that time, currently on v3.4, the dark extended areas is me at work where i turn airplane mode on due to serious bad reception at work... sync is on rest of the time for gmail/whatsapp/kakao other than that manual updates on twit and some news apps...
u can see the first jump in the first pic, that was due to me exchanging with 1st spare battery( got 4 + original batt= total of 5)
i dont know if its the phone and exchanging batteries thats causing such high battery losses at the end of the battery life...
plus yesterday and the day before battery goes crazy when it reaches 30-20% and when i go for a restart to freshen things up... the phone wont switch on thinking the battery is totally dead... i put in the new battery and its @ 100% ... switch back to the old battery to see where the 30-20% went... it wont start...
now im thinking... keeping 1 battery in the phone with a charge from 0-100% actually takes the phone all the way to 0% but exchanging the battery wont...
how am i supposed to use the full potential of the batteries...
UpInTheAir said:
If your rooted, try battery calibration. Plenty of threads about, and varying methods.
If not, another battery, and if new, ensure charge fully, phone off, overnight, before first boot.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
been using this app since my old sgs, it sure works and have been using it ever since...
tho in the [Rom]Wanam ... install procedure says that its backing up the battery stats and this lead me to think that a batt calibration is not needed... or am i wrong to think so?
If you change batteries, all previous data will be irrelevant, and you need to calibrate each time. You can do things manually by installing battery monitor widget, charge to 100% AND until the mA reaches zero (Voltage spills be approx 4200mV). At this point, quickly delete battery stats (menu / stats /) and immediately unplug.
https://market.android.com/details?id=ccc71.bmw
Top help with monitoring, You can config the update rate and widget content so it shows mA, %, mV. Also have alarm when stops charging (if configured).
There is also an option for calibration, but I only use this method when done above first. Never discharge to zero, 1% min.
Sent from my GT-I9100 using xda premium
UpInTheAir said:
If you change batteries, all previous data will be irrelevant, and you need to calibrate each time. You can do things manually by installing battery monitor widget, charge to 100% AND until the mA reaches zero (Voltage spills be approx 4200mV). At this point, quickly delete battery stats (menu / stats /) and immediately unplug.
https://market.android.com/details?id=ccc71.bmw
Top help with monitoring, You can config the update rate and widget content so it shows mA, %, mV. Also have alarm when stops charging (if configured).
There is also an option for calibration, but I only use this method when done above first. Never discharge to zero, 1% min.
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Thing is, what's the use of having spare batteries if this will happen on each battery swap and having to go thru calibration means having a charger nearby...
and by 0% i didnt actually mean 0 but till that 1% turned the phone off
if what u said is true, then i guess i need some kind of script to help and keep the batt data even after swapping.. based on 1 good calibrated file swapping batteries should start from a certain point even if the batteries do lose some of their charge but continue to moniter things as they were... i dunno if what i said makes sense... correct me if i'm wrong
Not really 100% sure, but sure I have not always calibrated after a battery swap in the dhd..The previous battery was calibrated and performing well, and the replacement would have been very close to 100% charge. I didn't notice any irregularities in the battery data, or battery drain.
So I suppose a good bat stats file should help the phone showing relatively "accurate" data after a battery swap, if they're both "conditioned" (gone through a number of charging cycles, not straight out of thre box)
Maybe I could be wrong, but based on past experience.
Sent from my GT-I9100 using xda premium
UpInTheAir said:
Not really 100% sure, but sure I have not always calibrated after a battery swap in the dhd..The previous battery was calibrated and performing well, and the replacement would have been very close to 100% charge. I didn't notice any irregularities in the battery data, or battery drain.
So I suppose a good bat stats file should help the phone showing relatively "accurate" data after a battery swap, if they're both "conditioned" (gone through a number of charging cycles, not straight out of thre box)
Maybe I could be wrong, but based on past experience.
Sent from my GT-I9100 using xda premium
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Click to collapse
thanks a lot for ur replies ^_^ much appreciated
anybody else wanna shed some light on this ?
This is a good app for more info on battery drainage.
http://forum.xda-developers.com/showthread.php?t=1179809
Have you tried different radios/modems for better reception? if your phone is struggling to get decent reception its going to use your battery.
You could try changing to 2G only in wireless settings. used to help me alot.
mynamesteve said:
This is a good app for more info on battery drainage.
http://forum.xda-developers.com/showthread.php?t=1179809
Have you tried different radios/modems for better reception? if your phone is struggling to get decent reception its going to use your battery.
You could try changing to 2G only in wireless settings. used to help me alot.
Click to expand...
Click to collapse
i'm already using it steve, thanx for the helpful info ^_^ , tho it has nothing to do with my strange problem... before going to work i switch to 2g coz i mainly use it for calls so after work is done, i wanna have fun with the phone so its back to 3g... i hardly have reception as i mentioned before is due to really thick walls and working underground in some rooms... its just common sense... plus im on latest modem and its actually performing better than other phones (nokia,BB,moto,iphones....) at where i work, 5 guys got convinced and got a sgs2 coz of mine lol
Interesting article on Rootzwiki:
Wiping Battery Stats is Pointless, Says Google Jan 13 2012 09:30 PM | Ashley Glenn in Articles
Over time wiping battery stats has become a regular ritual among the Android enthusiast community. Buy a new battery? Wipe your battery stats! Upgrade to a bigger battery? Wipe your battery stats! Change kernels or restore a nandroid backup? You know what to do: wipe battery stats! But this ritual may soon become a thing of the past thanks to Google engineer Dianne Hackborn, who sheds a light on the subject that puts the tightly-held practice of wiping battery stats in the same league as carrying a lucky rabbit's foot or throwing a pinch of spilled salt over your shoulder.
Recommending that users wipe their battery stats appears in so many places and as a cure for so many ills that it has become ubiquitous. Adherents to this practice will sit and wait for their phones to report a full charge, then use an app that deletes the batterystats.bin file or reboot into recovery mode and wipe it from there. This supposedly cures a number of ills such as battery scaling issues, poor battery percentage reporting, and any of a myriad other number of issues. The truth is, according to Android Framework Engineer Dianne Hackborn, that this file is a repository for information about system activity and that it actually takes care of itself without the need for user intervention. From Dianne's post:
Quote
This file is used to maintain, across reboots, low-level data about the kinds of operations the device and your apps are doing between battery changes. That is, it is solely used to compute the blame for battery usage shown in the "Battery Use" UI in settings.
That is, it has deeply significant things like "app X held a wake lock for 2 minutes" and "the screen was on at 60% brightness for 10 minutes."
It has no impact on the current battery level shown to you.
It has no impact on your battery life.
Deleting it is not going to do anything to make your more device more fantastic and wonderful... well, unless you have some deep hatred for seeing anything shown in the battery usage UI. And anyway, it is reset every time you unplug from power with a relatively full charge (thus why the battery usage UI data resets at that point), so this would be a much easier way to make it go away.
It really can't be put more straightforward than that, folks. So rest assured next time you put a new battery in or flash a new kernel or restore an old backup that all you have to do to help your phone or tablet play nice with its battery is charge it to 100% and do nothing else. It really is that simple. But don't worry, enthusiasts - you'll find plenty of other reasons to hang out in recovery anyway.
Know of a sweet app, trick, mod, or hack for your Android device? Send us a tip! [email protected]
Sent from my MB870 using xda premium
This is interesting, so Google engineering will incorporate it into new OTA's? Or does this mean I've wasted time while flashing countless Roms?
Pixelation said:
This is interesting, so Google engineering will incorporate it into new OTA's? Or does this mean I've wasted time while flashing countless Roms?
Click to expand...
Click to collapse
I'm reading this as we've been wasting time.
Sent from my MB870 using xda premium
Not wasting time flashing countless roms. Just wasting time wiping battery stats. That's the way it looks to me. Personally, I've always thought wiping battery stats was nothing but a whole lot of voodoo. Never had the need for it, don't see why anybody else would either. Let the flames begin.
I knew it couldn't possibly have an effect on actual battery life, but I thought maybe the file collected information about the length of the battery to calibrate the meter (because let's face it, with the X2 battery bug it's pretty clear that it doesn't get the value directly from the battery).
Funny thing about calibrating when it gets to 100 though...if there truly is something wrong with the meter, why would you suddenly trust it to know when it's charged? This is why I'd always charge it for a little extra and go by the voltage meter.
So basically, I've seen a couple of different readings. I've always waited past 100% and in different ROMs I've seen 4192, 4196, 4198, & 4200 mah.
I use the extended battery, sooooo readings may vary between regular battery.
Pixelation said:
So basically, I've seen a couple of different readings. I've always waited past 100% and in different ROMs I've seen 4192, 4196, 4198, & 4200 mah.
I use the extended battery, sooooo readings may vary between regular battery.
Click to expand...
Click to collapse
I have an extended battery as well. Actually, I have two extended batteries and two regular batteries. Got the first one with my droid X, then a faulty extended battery (bad batch where the meter doesn't read right), then a replacement extended battery, then the one that came with my X2. No two are the same, but they should all max out near 4200 mV.
Edit: I use one extended battery.
Ok this screen is after install of CM 7 tonight, it reads 4205 mah, so why is it different, with different Roms?
Weird isn't it?
Pixelation said:
Edit: I use one extended battery.
Ok this screen is after install of CM 7 tonight, it reads 4205 mah, so why is it different, with different Roms?
Weird isn't it?
Click to expand...
Click to collapse
The stats can easily drift if you don't flash ROMs with your phone at 100% battery, hence why sometimes the calibration is needed [be sure to wipe stats when at 100% [either via app or recovery], best thing to do is fully discharge battery until auto off occurs and then fully charge with AC Wall Adapter and charge only screen, then when it hits 100% wait a few min, restart to OS to be sure it also says 100% [if not wait until it does and wait about 20 min longer] then restart to recovery and flash away [you could also wipe battery stats as part of flash if you do as stated before flashing]. I usually set it up so I fully discharge the phone [restarting to be sure a couple to few times] and then charge with phone off and charge only screen overnight and flash my ROM first thing in the morning right before I unplug it and unplug once I reach the point I am ready to restart device and do initial boot after flashing. Further details below...
Basically charge to 100% [or as absolutely close as you can get it [AC Wall charger is best unless you REALLY are forced to do it via USB and is best to charge via the charge only screen [phone is powered off and not booted in to the OS and all you normally see is just a battery filling on screen [and is fastest way to charge battery]]. Wait an additional 20 - 30 min after it registers 100% [this is to be sure the battery is absolutely topped off essentially] and I will generally do a restart as sometimes the battery may come back to less than 100% on a restart if your phone is not judging the battery right and is in need of calibration. If it does not register after restart wait until it hits 100% and wait the additional 20 min [you can cut out the initial 20 min wait if you want to do the restart to verify just wait the 20 min once you feel sure battery is as topped off as you can get it], then after wiping restart from recovery and unplug. Now be sure to drain the battery until auto shutoff [either stream media if in a hurry or through general usage. Either way wait until auto shut off.]. I usually will power the device back on and be sure it is not going to get back to the OS [if it even gets to boot logo I wait a few seconds and power it on again to be sure all I get is the boot vibrate on my device [some don't have this, but usually it's tablets almost all phones [and definitely both Motorola and Samsung do this]. I then charge it to full [again AC wall charger recommended as above and again with charge only, but as stated if you cant live with phone off or whatever you can do it with OS running as well. You are free to go as you wish after this second full charge really though if you do a couple more [dont have to be insane] it can help ensure the statistics get a good start.
As I believe I stated above the best way to avoid calibration as long as possible is to charge phone to 100% via phone off screen [with AC Adapter and wait the extra 20 min after it registers full before you flash [I will sometimes take it a step further, leave it plugged in while flashing my install zips and then once I go to restart system for the initial boot after ROM flash I will unplug the charger from the phone.
Hope this helps
OK so to calibrate my new battery charge to full unplug then use till it dies then recharge to full and that's it? Is one cycle enough?
Thanks
Sent from my SCH-I605 using Tapatalk 2
there is no calibrating requirement for lithium ion batteries...
Not sure if it is good to let it die. I was told on the gnex that running it till it dies was not good for thag type of battery? Maybe someone with more knowledge can clarify that.
Travisdroidx2 said:
Not sure if it is good to let it die. I was told on the gnex that running it till it dies was not good for thag type of battery? Maybe someone with more knowledge can clarify that.
Click to expand...
Click to collapse
No adverse effect.
Sent from my SCH-I605 using Tapatalk 2
Actually you are not supposed to let them drain completely..
http://www.techrepublic.com/blog/five-apps/five-tips-for-extending-lithium-ion-battery-life/289
I know this is slightly a different question. My issue is after you flash a new rom it seems the % is not entirely accurate. It will act fine for a while and then when u get to like less then 10% it drops dramatically like it wasnt reading it correctly or just like today I turned the phone off and did a reboot at 96% and when it powered on it was at 92% which is quite a bit of time on the note 2.
How do you get your battery reading accurate again after you have flashed a new rom? This has happened with my Bionic in the past as well. Thanks.
Sent from my SCH-I605 using xda app-developers app
nunyazz said:
Actually you are not supposed to let them drain completely..
http://www.techrepublic.com/blog/five-apps/five-tips-for-extending-lithium-ion-battery-life/289
Click to expand...
Click to collapse
Correct, it is bad to deep discharge Lithium Ion batteries.
INCREMENTAL said:
I know this is slightly a different question. My issue is after you flash a new rom it seems the % is not entirely accurate. It will act fine for a while and then when u get to like less then 10% it drops dramatically like it wasnt reading it correctly or just like today I turned the phone off and did a reboot at 96% and when it powered on it was at 92% which is quite a bit of time on the note 2.
How do you get your battery reading accurate again after you have flashed a new rom? This has happened with my Bionic in the past as well. Thanks.
Click to expand...
Click to collapse
100-90% can vary depending on when you take it off of the charger. Basically, once the battery hits 100% on the charger, it will start slowly discharging itself to avoid damage. Once it get below a certain threshold, it will charge back up to capacity again.
Regarding rebooting, that process is fairly system intensive and it is natural to lose some battery life. In addition, prior to the reboot the OS is calculating a rough estimate of the percentage left partially based on previous use. So for example, if your phone was in deep sleep for hours, then you reboot where the CPU ramps up significantly, the percentage will alter to more accurately reflect the charge left in the battery.
In short, there is never a need to "calibrate" a battery, the OS will sort it out itself even after flashing different ROMs and it can take a couple days for kernels to settle.