Related
I read a lot of thread about battery calibration so I want to know if someone try this on XT720 and if it's really usefull and not dangerous for the phone.
Thank you
It is useful and not dangerous at all. Your battery has, if stock that came with phone, a full charge of 4.2v.
So let's say that you have been conservatively using you phone most of the day and are at 70%. You decide to flash the Hellmonger edition or CM6 but you make a nandroid backup first. You flash them and it goes horribly wrong and your phone power dwindles down to 30% and you freakout and charge it back up.
When it is charging, you decide to hold off on flashing for a bit and want to go back to your "home" ROM, whatever that may be. You let your phone charge up to 100% and re-flash your back up. Once it reboots and settles down, you happen to notice that just 5 mins ago you were at 100%, but now after flashing your backup, your battery shows 70%.
30% drop in 5 mins is rediculous. Yes it is, bit it didn't really drop 30% in 5 mins because when you backed up your original ROM, you also backed up your data/system/batterystats.bin that was calibrated to 70%.
If you use Battery Calibrator and charge it up fully, run app, hit it and then unplug, it deletes the data/system/batterystats.bin and in a few seconds (5 ithink) it creates a new one with you proper charge and voltz.
So if you flash a lot, this is good for you. Or you can delete the batterystats.bin manually if you want, but there's an app for that.
Woodrube said:
It is useful and not dangerous at all. Your battery has, if stock that came with phone, a full charge of 4.2v.
So let's say that you have been conservatively using you phone most of the day and are at 70%. You decide to flash the Hellmonger edition or CM6 but you make a nandroid backup first. You flash them and it goes horribly wrong and your phone power dwindles down to 30% and you freakout and charge it back up.
When it is charging, you decide to hold off on flashing for a bit and want to go back to your "home" ROM, whatever that may be. You let your phone charge up to 100% and re-flash your back up. Once it reboots and settles down, you happen to notice that just 5 mins ago you were at 100%, but now after flashing your backup, your battery shows 70%.
30% drop in 5 mins is rediculous. Yes it is, bit it didn't really drop 30% in 5 mins because when you backed up your original ROM, you also backed up your data/system/batterystats.bin that was calibrated to 70%.
If you use Battery Calibrator and charge it up fully, run app, hit it and then unplug, it deletes the data/system/batterystats.bin and in a few seconds (5 ithink) it creates a new one with you proper charge and voltz.
So if you flash a lot, this is good for you. Or you can delete the batterystats.bin manually if you want, but there's an app for that.
Click to expand...
Click to collapse
So, if I understand, it's not so usefull because after I lose my 30%, if I charge and I have 100% it's really 100% not 70% right ?
I would say that it is always best to start from a clean slate. It deletes that batstat file and starts anew. Can't hurt, but if you are flashing ROMs every 3rd day like most of us, it does come in handy.
For the moral of the stroy, it will not damage your phone. Just a one click app that you can do manually with Root Explorer if you wanted to.
Woodrube said:
I would say that it is always best to start from a clean slate. It deletes that batstat file and starts anew. Can't hurt, but if you are flashing ROMs every 3rd day like most of us, it does come in handy.
For the moral of the stroy, it will not damage your phone. Just a one click app that you can do manually with Root Explorer if you wanted to.
Click to expand...
Click to collapse
Ok, thank you, I will use it when I will flash a new ROM.
Do you actually have to drain the battery fully after calibration?
Sent from my MilestoneXT720 using XDA App
eejin2 said:
Do you actually have to drain the battery fully after calibration?
Sent from my MilestoneXT720 using XDA App
Click to expand...
Click to collapse
Its recommended that the battery drain fully, and then be recharged without interruption. I guess thats to give android a full scale from full to empty, to help better report battery stats and consumption.
However for me full drain means 10-15%, its hurts the battery to be drained till the phone powers off.
sohrab.naushad said:
Its recommended that the battery drain fully, and then be recharged without interruption. I guess thats to give android a full scale from full to empty, to help better report battery stats and consumption.
However for me full drain means 10-15%, its hurts the battery to be drained till the phone powers off.
Click to expand...
Click to collapse
Haha battery calibration definatly helps the battery a lot but u suggest not draining battery fully??
androidlover123 said:
Haha battery calibration definatly helps the battery a lot but u suggest not draining battery fully??
Click to expand...
Click to collapse
I used to drain it fully till my phone turned off before calibration but I read a very detailed article about how draining the battery completely can hurt it. So I choose to drain it till 5-10% which is good enough
How come sometimes when the battery is full it shows 4200mah like it should but sometimes it shows less like around 4165mah in the battery calibration app? At 4165, I still left it there to charge to see if it would increase or not but it didn't...
Sent from my MilestoneXT720 using XDA App
I know that the last little bit of charge just trickles in and takes a long time. If mine is at somewhere between 4150 and 4200, i call it good and go from there. If it was showing at say 4095 and 100%, then there might be something wrong with either the data or the battery. If you are sitting at 4165, then it is charged for the most part.
The app and what it does is more for when you are flashing a ROM and have around 60% and then once booted up fully, you charge it up to 100%. Decided you don't like your ROM and go back to your original ROM via backup, it will show 60% instead of the 100 or 90% you had before you went back to back up b/c you backed up the batstat bin when you nandroided your original ROM.
How about this:
ROM: Epicsteelblue 70% (and you made a backup) Then went to CM6, charged and hit calibrate battery at 100%. Used CM6 for a few hours and decided it wasn't your bag. Your batter is at 50%. You flash back to your Epicbluesteel ROM and you know for a fact you had 50% before you flashed back, but now once totally booted, you are showing 70%. This is why you use the battery calibrator after you flash a ROM. Gotta create a new batstat bin for you "fresh" ROM (even though it is a backup).
Hope this helps explain better.
eejin2 said:
How come sometimes when the battery is full it shows 4200mah like it should but sometimes it shows less like around 4165mah in the battery calibration app? At 4165, I still left it there to charge to see if it would increase or not but it didn't...
Sent from my MilestoneXT720 using XDA App
Click to expand...
Click to collapse
That happens sometimes to me aswell. The battery calibration app shows the battery full at 4165 or somewhere in that range. What I do with that is bump charge it. So if battery calibration shows 4165, i just calibrate it and turn the phone off while it is connected to the charger. When it turns off the charging screen appears and shows 100%, i leave it there for an hour or two. Then remove and turn the phone on. If you go into the battery information itll show the charge to be 4200 or close to that. Hope that was helpful you can try it next time.
EDIT: The reason I turn the phone off and let is charge is that when it reboots after fully charging to 4200 it can create a fresh battery stats. Remember battery stats are only rebuilt upon boot. If you calibrate your battery and then dont reboot its useless. To test calibrate it, and then use it for awhile and then try to recalibrate it the app will indicate that there are no battery stats avaible to delete. This is because the ROM has not made any new battery stats and will only make them on boot.
hey guys has anyone tried this method (http://forum.xda-developers.com/showpost.php?p=11803458&postcount=10) of calibrating battery? it seems the dev says that if u use his method, you can calibrate without downtime!!
wow this is damn cool. but its kinda complicated. the old way feels better for me i think...
Battery Updates
The battery updates every 10%, is there any way to make it update more precisely, like every 5%?
I've never been able to get anything better that 10% battery increments
Okay thanks maybe in a future rom this would be nice.
Hi
Is their a way to change from 10% to 1% increameants.
Sent from my XT720 using xda premium
eejin2 said:
How come sometimes when the battery is full it shows 4200mah like it should but sometimes it shows less like around 4165mah in the battery calibration app? At 4165, I still left it there to charge to see if it would increase or not but it didn't...
Sent from my MilestoneXT720 using XDA App
Click to expand...
Click to collapse
It is the property of all rechargetable battery, 4.2V can only see at the moment charging progress just finished. when the power management IC pull of charge current, battery's voltage will drop a litte in a very short time, like you said, 4.165V for example. And, because of your charger is connected, battery will not drain, It won't be another charging progress witch you are expecting.
I know I'm digging up an old thread here, so sorry for that. I've recently tried a few other ROMs, but since have come back to CM6.3.7. I always do the battery calibration thing when I flash ROMs and each time I've tried it lately, it gives me odd information in the Battery Usage screen. I charged my phone to 100% yesterday before leaving work and when I got to work today, it showed 70%, which seemed normal, but the Battery Usage screen showed "1h 24m since last unplugged" and I know I hadn't plugged it into the wall or USB for about 12 hours. I did restart once....could that be the reason why the time since last unplugged is incorrect?
so the last couple of days ive noticed that when i charge my battery and check the history. it seems to go from 76% to 100% right after it passes 76% ive calibrated the battery and used the "Battery monitor widget pro" to set the values. is there anything else i can do?
ive also ordered extra batteries and they seem to do the same around 80% and go up to 100% in a matter of seconds
thanks
Charge your phone to full while phone is on. Turn off fast boot and shut phone off leaving it plugged in. Let it continue to charge until the led turns green.
Once green go into recovery and wipe battery stats. It's in the advanced menu. This will reset any previous settings but its VERY important to make sure its been charged full, first while on and second while off, before doing this.
Sent from my Inspire 4G using XDA App.
Gizmoe said:
Charge your phone to full while phone is on. Turn off fast boot and shut phone off leaving it plugged in. Let it continue to charge until the led turns green.
Once green go into recovery and wipe battery stats. It's in the advanced menu. This will reset any previous settings but its VERY important to make sure its been charged full, first while on and second while off, before doing this.
Sent from my Inspire 4G using XDA App.
Click to expand...
Click to collapse
ive done that. its fully charged now but it went from 76 to 100 within a minute. i did the wipe stats last night but it took like 30 mins while playing a movie for it to go completely dead from 1% to off
Well i'd say let it drain and recharge for a few cycles and it should recalibrate itself. If you go through about five cycles of draining it to about 20 and then fully recharging without interruption and its still messed up, then it could be the Rom giving you trouble. Re install Rom with a full battery. If its still messed up after that then the battery is probably damaged.
Edit: try other roms too before deciding that it is definitely the battery. Sometime roms have minor bugs like this.
Sent from my Inspire 4G using XDA App.
Gizmoe said:
Well i'd say let it drain and recharge for a few cycles and it should recalibrate itself. If you go through about five cycles of draining it to about 20 and then fully recharging without interruption and its still messed up, then it could be the Rom giving you trouble. Re install Rom with a full battery. If its still messed up after that then the battery is probably damaged.
Edit: try other roms too before deciding that it is definitely the battery. Sometime roms have minor bugs like this.
Sent from my Inspire 4G using XDA App.
Click to expand...
Click to collapse
Also, any add on mods to the notification bar could be causing the bug.
Sent from my Inspire 4G using the power of the dark side
I can't seem to figure out whats wrong with my phone. I have a draining issue with my battery and i don't know if my battery indicator is not accurate. I used odin and went back to stock on a full indicated battery. Then I flashed VB and adrenaline shots 1.4-1 and camera tweak and scrolling mod and booted the phone and let set for 10 minutes before I reloaded all my apps. My battery was indicating it was at 100% ok so i unplugged the battery and wham it dropped to 79% plugged it back in and it started charged from where it left off at 79%. After a few min and the phone goes to sleep mode and indicates 100% i unplug the phone and it charged from where it left off at 79%. So i kept unplugging it and plugging it back in every few minutes till i got to 100%. So sounds ok now but i had to reboot my system and wham again down to 79% and even with the uv settings my battery drains fast. I tried calibrating the battery and also charged it with the phone being off and no results. All I want is a full charge as I work long shifts lol. thanks and i hope this is understandable the way i tried to describe it.
Also Thanks to the devs on here who dedicate their time to making this device do what it was meant to do..
Try letting the phone die completely. After about ten minutes power it back on then let it die completely again. Leave it off for an hour then plug into wall charger. Let it charge to 100% while off. After it hits 100% unplug it and leave it sit for an hour while off. Then turn it on and use normally.
hechoen said:
Try letting the phone die completely.
Click to expand...
Click to collapse
Not to contradict hechoen - but take note that Samsung recommends against completely discharging your battery in the manual for the phone.
+1 (edit: on previous calibration routing)
also you may try to "jump start" MAX17042 (fuel gauge) chip... when your phone at 100% on a charger (verify this by looking at battery voltage - OS Monitor / Misc tab. or other similar apps) - voltage should be around 4.15 - 4.2V. When you disconnect charger - what would be the voltage then? If around 4.0V then may be your battery is going south.
To "jump start" FG - turn off the phone, pull battery out and wait for 5 - 10 min. - just to be sure internal circuits got completely discharged.
When you install battery, FG chip will use "average" model for new lipo... see if it makes difference.
Yeah I've heard that this kind of batteries last longer if charged continuously (short and often charges) instead of full charges after letting it die. Something about battery cycles or some.
I'd recommend fully charging and battery calibration from market. Also, reflash rom but not tweaks yet, and see how it behaves. Then install tweaks/mods and see if the battery continues to decrease rapidly. If it does, get an app for battery info, check its health.. Your battery might be dying for good.
Sent from my SGH-T959V using XDA App
mikeflash said:
battery calibration from market.
Click to expand...
Click to collapse
Google has also debunked the battery calibration myth. There is a thread about it in the General Section with a link to the article.
To add to the recommendations...
Check how often your phone is set to sync. Big battery drainer. Auto starting apps. And display brightness.
if all fails you could try to reflash and see if that fixes it
Sent from my SGH-T959V using XDA App
lumin30 said:
Google has also debunked the battery calibration myth. There is a thread about it in the General Section with a link to the article.
Click to expand...
Click to collapse
+1 on that too... glad to see that finally common sense based on knowledge prevails "Battery Calibration by wiping batterystats file" apps myths.
lumin30 said:
Google has also debunked the battery calibration myth. There is a thread about it in the General Section with a link to the article.
Click to expand...
Click to collapse
Wait, I didn't say battery calibration is going to make your battery last longer. It doesn't do that.
But it's a fact that after installing a rom a battery calibration is needed. Normally, developers code their install scripts to perform a battery calibration when installing the rom, so this is not needed afterwards, I still do it anyways when charging the first time to 100%.
I for one had the issue for the first time when installing a rom (don't remember which one) and after rebooting or shutting down the phone, the battery would go from >90% to <20% for no reason at all. Someone here at XDA suggested battery calibration app (or, manually at CWM/advanced, clear battery stats) and the issue was gone. Maybe the rom is misreading battery data and that could cause this kind of issues... which a battery calibration would fix it.
Just saying.. if there's an option for it in CWM, then chances are it is needed for some reason!
Vlad_z said:
+1 on that too... glad to see that finally common sense based on knowledge prevails "Battery Calibration by wiping batterystats file" apps myths.
Click to expand...
Click to collapse
Indeed. It's on our wiki, too, under the batterystats.bin Buzz Word entry.
So i think I needed to do a factory reset. I re flashed vahnilla black and then did a factory reset in the rom. Before I re flashed the rom I
had 60% as soon I restarted the phone on the freshly flashed rom it dropped to 1% then I did a factory restart within the rom and when I rebooted the battery indicated 20% and I am in 16% charge now, only went down 4% within the last 6 hours. So I will run it till it dies tonight and charge it with the phone off to see the results tomorrow.
Thanks Raver for the help in this matter. Will keep everyone posted on the end results.
Sent from my SGH-T959V using xda premium
lumin30 said:
Not to contradict hechoen - but take note that Samsung recommends against completely discharging your battery in the manual for the phone.
Click to expand...
Click to collapse
No contradiction at all. You shouldn't fully discharge all the time. But once in a while it's actually good for the battery. Especially lithium ion. Take a look at this. For those of you who don't like to read that much just skip to the bottom.
http://batteryuniversity.com/learn/article/inner_workings_of_a_smart_battery
hechoen said:
No contradiction at all. You shouldn't fully discharge all the time. But once in a while it's actually good for the battery. Especially lithium ion. Take a look at this. For those of you who don't like to read that much just skip to the bottom.
Click to expand...
Click to collapse
Forgot link?
thomas.raines said:
Forgot link?
Click to expand...
Click to collapse
Sure did. Sorry about that.
vwgtiturbo1 said:
So I will run it till it dies tonight and charge it with the phone off to see the results tomorrow.
Thanks Raver for the help in this matter. Will keep everyone posted on the end results.
Sent from my SGH-T959V using xda premium
Click to expand...
Click to collapse
so you call hechoen (guy who posted calibration routing) Raver...
Vlad_z said:
so you call hechoen (guy who posted calibration routing) Raver...
Click to expand...
Click to collapse
no actually raver answered a few questions for me through pm. but hechoen thank you and i will do that when my battery is fully charged. thanks again to everyone for the info! will update tomorrow!
I fully charged my battery last night while it being off and let it sit for a hour before turning it on. Well great seemed to now indicate it's fully charged after a hour I threw on adrenaline shots 14-1 with camera and scrolling mod. Let it air for 30min went into recoveryand fix perms. When I rebooted the phone the battery dropped again from 80 to 60 and then went back up to 75. Then I rebooted again it dropped to 25% and then I rebooted again and now it indicates 59% I believe this battery is heading south. What do you guys think?
Sent from my SGH-T959V using xda premium
....................
drywolf said:
How old is the battery. If it is a quality battery it should take between 500 and 900 recharges. Do you own a volt meter?
Also calibrating your battery should be done occasionally. Not to somehow make your battery last longer, but to clear out the old data and use new data to show your batteries usage. Just like resetting the computer in your car that shows average MPG. Fresh input will give you a better idea of what your car is getting today and same goes for your battery stats.
http://batteryuniversity.com/learn/article/battery_calibration
Click to expand...
Click to collapse
I have calibrated the battery. Everything seems to of been working fine until I added adrenaline shots. Once I rebooted after installing adrenaline shots my battery started acting up again. I pulled the battery out for 10 min and popped back in and now I'm indicating 56% after 4 hours of heavy use with wifi on. :/
Sent from my SGH-T959V using xda premium
Is this a factory battery? Or a aftermarket ebay/amazon battery?
Im sure people will disagree but some of those aftermarket batteries are not the greatest quality.
Do you live in a town that had a battery store, like the interstate battery shop or something of the likes? Most of those places can do a brief diagnostic of the battery and tell you if it is bad. Or if you have a volt meter fully charge it and test it that way.
It really sounds like the battery is being stupid. There should not be any reason installing A.S. could cause a instant battery drain. If that were the case your phone would be so hot you could not hold it. Because draining that much juice in that little of time would indicate you have a short or something of that nature.
Hello. This issue has been going on for a while now. But when I take my phone off the charger when its not fully charged. The battery percentage keeps going up. For example if I unplug it at 78%, the percentage will gradually go up to like 86-88%. Can anyone give me a hint as to why its doing this? Thanks!
Sent from my SAMSUNG-SGH-I727 using XDA
MrTenseJACOB said:
Hello. This issue has been going on for a while now. But when I take my phone off the charger when its not fully charged. The battery percentage keeps going up. For example if I unplug it at 78%, the percentage will gradually go up to like 86-88%. Can anyone give me a hint as to why its doing this? Thanks!
Sent from my SAMSUNG-SGH-I727 using XDA
Click to expand...
Click to collapse
Battery stats are wonked out.
Do you have Clockwworkmod recovery installed? Or is this a pure stock unrooted?
EDIT: Mr. Jacob, what are you tense about? LOL ! Just kidding....
Try using an app called battery calibration (can be found in the app market) when the phone is fully charged. This will reset all the battery stat logs and set your 100% to a true 100%
I have clockwork installed. I'm running SkyICS rom. And I have already tried battery calibration.
PS: And nothing really xD its been my screen name since the early Xbox days
Sent from my SAMSUNG-SGH-I727 using XDA
Battery calibration does nothing. Normally I wouldn't recommend that u COMPLETELY drain the skyrocket battery as its lithium based and can cause dead cells, yours needs calibrating, and wiping battery stats or using a battery calibration app won't help (both of these are myths by the way, Google if). Use phone until its completely dead, and won't turn on at all, only vibrate with a black screen. Then charge phone for a continuous 8 hours uninterrupted, that should fix it
MrTenseJACOB said:
I have clockwork installed. I'm running SkyICS rom. And I have already tried battery calibration.
PS: And nothing really xD its been my screen name since the early Xbox days
Sent from my SAMSUNG-SGH-I727 using XDA
Click to expand...
Click to collapse
As a first try, charge to 100%. Then go into CWM recovery and wipe battery stats. It should be good to go....On ICS, thsi seems to fix it for me.
IF you then stilll have weird battery problems a proper recallibration will be in order.
I had to just wipe battery stats when charged to 100%. DON'T just wait for 100%. Alow the phone to get to fully charged.....if you have "Full Charge" notification on your ROM wait for that.
chappatti said:
As a first try, charge to 100%. Then go into CWM recovery and wipe battery stats. It should be good to go....On ICS, thsi seems to fix it for me.
IF you then stilll have weird battery problems a proper recallibration will be in order.
I had to just wipe battery stats when charged to 100%. DON'T just wait for 100%. Alow the phone to get to fully charged.....if you have "Full Charge" notification on your ROM wait for that.
Click to expand...
Click to collapse
Half of this is right chappatti
charging to 100% and letting it sit for at least an hour even after full charge notification is the best way. Wiping battery stats in cwm won't actually do anything though, thats a myth.
Actually, for lithium ion batteries, it is not recommended to let them discharge to zero. It's better to run it down to 10% or so (i usually do about 5%). and then charge it completely. Rinse and repeat over a few days, and there should be a difference.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Sent from my SAMSUNG-SGH-I727 using Tapatalk
icenight89 said:
Half of this is right chappatti
charging to 100% and letting it sit for at least an hour even after full charge notification is the best way. Wiping battery stats in cwm won't actually do anything though, thats a myth.
Click to expand...
Click to collapse
Yup, ice, ur are right. Wiping stats is not about battery charging stats....
https://plus.google.com/u/0/105051985738280261832/posts/FV3LVtdVxPT
What a revelation !! It's like realising my religion is all wrong !
BUT, BUT, BUT : reading the whole battery stats discussion, it i also clear that the business of charging for an hour after 100% is also not worthwhile, but is just a customer gimmick to make people feel thier batteries are topped off. This was started by HTC and the consensus is that is also does not help.
The simple solution is to let the battery go through 2-3 charge-discharge cycles.
Saitou33 said:
Actually, for lithium ion batteries, it is not recommended to let them discharge to zero. It's better to run it down to 10% or so (i usually do about 5%). and then charge it completely. Rinse and repeat over a few days, and there should be a difference.
http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries
Sent from my SAMSUNG-SGH-I727 using Tapatalk
Click to expand...
Click to collapse
A good read. Very useful, thanks !
I had this same issue with my Exynos G2, my problem was flashing different roms or putting a theme on. My fix came not by wiping battery stats but only doing flashes at 100% and plugged in. I never noticed it on my SR though. I'm not saying don't try what the others say, just giving you more options.
HW/SW specifics at bottom (if it helps)
Following the instructions provided this great site I added a custom ROM last year and for 6-8 months everything worked perfectly.
I was getting two days charge out of my battery which was is a 200% improvement. I'm not on my phone all the time.
Lately however, my phone has only been charging to 90%, and now 82% and the batt. drains before the day ends.
Using the same instructions here, I restored the phone using CWM with the files listed below (which are the same files I used originally) to restore my phone.
Everything seems to be working fine but I found a bunch of old files and app links to programs I had before so obviously I didn't do a full wipe which is what I was intending to do.
Can I restore my phone by going into CWM > Wipe data/factory reset or do I have to use ODIN to go back to factory firmware (I just downloaded I727RUXLF3_I727RRWCLF3_RWC.zip) to reset then go through the steps all over again.
Pardon the lack of terminology as I have only done this twice so I'm still new to this.
I just don't know what I need to do to get it back to stock and by stock I mean the ROM below.
Thank you all in advance. Hopefully I have provided enough information.
Samsung Galaxy S II Skyrocket SGH-I727R
ICS RUXLF3radio.zip
SKY ICS 4.2E R5goo.zip
Sky ICS 4.2E-17.zip
If you want to go back to like New condition I would do the odin process. You'll have to extract the .tar.md5 file out of the zip file you downloaded, the stock rom not the sky files. User 7-zip to extract. Put the extracted file in PDA in odin. Only have the auto reboot and f.reset checked in odin.
You'll then have to odin your recovery back on.
Sent from my SGH-I727R using xda app-developers app
jd1639 said:
If you want to go back to like New condition I would do the odin process. You'll have to extract the .tar.md5 file out of the zip file you downloaded, the stock rom not the sky files. User 7-zip to extract. Put the extracted file in PDA in odin. Only have the auto reboot and f.reset checked in odin.
You'll then have to odin your recovery back on.
Sent from my SGH-I727R using xda app-developers app
Click to expand...
Click to collapse
Thanks JD I'll give that a shot.
Condition your battery for it to show correctly. Drain battery completely till it won't even turn on. Then plug it in and charge completely with it off. Once done boot phone into recovery cwm. Wipe battery stats. Then reboot.
Make sure battery is not hot to ensure a good charge after draining battery.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Jnewell05 said:
Condition your battery for it to show correctly. Drain battery completely till it won't even turn on. Then plug it in and charge completely with it off. Once done boot phone into recovery cwm. Wipe battery stats. Then reboot.
Make sure battery is not hot to ensure a good charge after draining battery.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
First off its actually hard on a battery fully discharge it. Second wiping battery stats does absolutely nothing for the battery or the android system so this tells me you have no clue what you're doing.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Weird battery problem - charging
Ok, here's a weird one, you've probably seen before but it's new to me.
I wiped my phone back to factory stock using Vin's instructions. Followed them to a T and had no problems.
Kies then wanted to update my software (now at 4.1.2) which I let happen because I was just going to wipe it again anyways.
My battery still won't charge past 80%. When turned off, it shows 100% but the second I turn it on it immediately drops to 80%.
The battery life seems to be OK so that's not a problem.
Last night I swapped batteries with my wife's phone (factory stock SGH-T989D).
Here is where it gets weird (for me).
Her phone with my batt. charged to 100% and stays at 100% when turned on.
My phone with her batt. only charges to 80%. Again, when turned off it shows 100%.
So the battery is ruled out as being faulty I would think.
My phone has been factory wiped.... or has it? Did I screw up the wipe and leave some remnant behind?
Is there something I can install that will tell me exactly what is going on?
Suggestions?
I apologize if this type of question has been asked a thousand times but if the battery calibration is a 'myth' then I don't even know what to look for anymore.
Thanks
Try taking the battery out and leaving it out for 5 minutes. While it's out press and hold power for twenty or thirty seconds. That will discharge any residual juice in the phone. Pop the battery back in and power on.
Don't know what else to try
hechoen said:
Try taking the battery out and leaving it out for 5 minutes. While it's out press and hold power for twenty or thirty seconds. That will discharge any residual juice in the phone. Pop the battery back in and power on.
Click to expand...
Click to collapse
I tried that several different times over the weekend. I got it up to 84% from 80% but now it shows 100% charged within a few seconds after plugging in the phone while it is turned on. When I pull the cable, it goes back down to 84%.
I'm thinking of wiping it again but I'm not sure that is going to resolve the problem. Don't know what else to do/try.
Jnewell05 said:
Condition your battery for it to show correctly. Drain battery completely till it won't even turn on. Then plug it in and charge completely with it off. Once done boot phone into recovery cwm. Wipe battery stats. Then reboot.
Click to expand...
Click to collapse
Don't ever do this. Draining your battery below 15-20% is actually bad for it, as the heat generated by simply charging it while idle does damage. It's also been shown that the lower the depth of discharge, the more cycles your battery will have in it.
Also, Android devs who work for the big G have said that battery stats are essentially meaningless in this generation of phones. If you do calibrate your phone, don't run the battery all the way down. Get the 100% baseline, then use it as normal.
Download the battery calibration app. I believe Skyrockets max out at 4330 mV, but I could be thinking of the Note II. If the battery calibration app shows that you're in that neighborhood, who cares if the meter says 100% or not? You're getting a full charge.
IndyDakota said:
I tried that several different times over the weekend. I got it up to 84% from 80% but now it shows 100% charged within a few seconds after plugging in the phone while it is turned on. When I pull the cable, it goes back down to 84%.
I'm thinking of wiping it again but I'm not sure that is going to resolve the problem. Don't know what else to do/try.
Click to expand...
Click to collapse
Tried a different battery?
T.J. Bender said:
Don't ever do this. Draining your battery below 15-20% is actually bad for it, as the heat generated by simply charging it while idle does damage. It's also been shown that the lower the depth of discharge, the more cycles your battery will have in it.
Also, Android devs who work for the big G have said that battery stats are essentially meaningless in this generation of phones. If you do calibrate your phone, don't run the battery all the way down. Get the 100% baseline, then use it as normal.
Download the battery calibration app. I believe Skyrockets max out at 4330 mV, but I could be thinking of the Note II. If the battery calibration app shows that you're in that neighborhood, who cares if the meter says 100% or not? You're getting a full charge.
Tried a different battery?
Click to expand...
Click to collapse
Can you recommend a battery calibration app?
I did swap out the batteries as per the post above. I was thinking of charging the wife's batt. to 100% and putting it in my phone. Then do the pull the batt. for five minute trick. At this point it's all about the hail mary.
I'll keep you posted
Update: HAHA! Just gets better and better. Downloaded two battery calibration apps. Both say to charge to 100% before operating... FML.
I use Battery Calibration. It shows the mV along with the charge level. If you're charging to 4100 mV+ when it freezes at 81%, you're doing ok. If you're only charging to 3000-some mV, your battery's borked.
T.J. Bender said:
I use Battery Calibration. It shows the mV along with the charge level. If you're charging to 4100 mV+ when it freezes at 81%, you're doing ok. If you're only charging to 3000-some mV, your battery's borked.
Click to expand...
Click to collapse
Been testing a few things. I charged my battery to 83% (full) and put it in my wife's phone. It registers as 100% so it's not the battery.
Yeah, I could live with it but it bugs me as I'm sure it would bug you too!
The problem I'm running into is when I put the battery back in it goes to 83%.
I installed two battery calibration tools. Both called 'Battery Calibration' One says it can't operate until the battery is charged to 100% so I'm screwed there.
The other one says my phone needs to be rooted. I thought I had already taken care of this but I went through Vincom's steps again to root (just to be sure) and now I routinely get a "E-signature verification failed"
The CWM (ver 6) doesn't give me the option to apply from external card, nor does it have an advanced section. I think I am going to wipe the phone again and use the old CWM.
===UPDATE===
I ended up wiping my phone again, going back to CWM 5 and SKYICS 4.2. Wiped everything and voila. Battery is reading 100% again.
Thanks TJ for your assistance and patience.
IndyDakota said:
I ended up wiping my phone again, going back to CWM 5 and SKYICS 4.2. Wiped everything and voila. Battery is reading 100% again.
Thanks TJ for your assistance and patience.
Click to expand...
Click to collapse
Isn't it a great feeling when a potential hardware (e.g., $$$) issue turns out to be a simple software fix?