Has anyone run across this? Lately when using Battery Calibration app, as soon as I unplug from charger I drop from 100 to 96...( happens frequently now) is this just a sign my battery is getting weak?
Sent from my SCH-I500 using XDA App
Nope - that's actually the correct behavior for a well-calibrated and healthy battery. When you charge your phone disconnects the current when the battery is full, and for the next half hour or so it reads 100% but the battery is slowly discharging. This protocol preserves battery longevity. After a while it will top the battery off again. Long story short, 96% charge shortly after unplugging is perfectly normal.
Sent from my SCH-I500 using XDA App
elupus said:
Nope - that's actually the correct behavior for a well-calibrated and healthy battery. When you charge your phone disconnects the current when the battery is full, and for the next half hour or so it reads 100% but the battery is slowly discharging. This protocol preserves battery longevity. After a while it will top the battery off again. Long story short, 96% charge shortly after unplugging is perfectly normal.
Sent from my SCH-I500 using XDA App
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thats funny, my device stays at 100 percent after I unplug it from the charger, then discharges normally. It never drops to 96%, sounds more like a kernel issue to me.
droidstyle said:
thats funny, my device stays at 100 percent after I unplug it from the charger, then discharges normally. It never drops to 96%, sounds more like a kernel issue to me.
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Hmm, yes it happens IMMEDIATELY after unplugging. I'm running the latest KGB kernel if your wondering
Sent from my SCH-I500 using XDA App
Switched to lean kernel ....
Sent from my SCH-I500 using XDA App
When still running Froyo my Fascinate always displayed 96%-100% upon disconnection after full charge, even if left overnight. After update to GB, the longer it remains on charger after reaching 100%, the lower it drops after disconnecting. Sometimes it's dropped from 100% to 76% as soon as charger is unplugged, if left on charger for too long.
I was informed on another forum that there's trouble with the trickle charge function on GB and it's likely not to be corrected.
Just thought I'd pass that on, for what it's worth.
the battery does that on purpose so it doesn't overcharge and decrease battery life.
in other news, google android people have said more than once that battery calibration does nothing, wiping battery stats will not help anything at all.
Sent from my ICS SCH-i500
I normally Charge it while Battery Calibration is running, then when it hits 100%, I power off the phone and let it finish charging with the power off then onces its "Truly" fully charged I turn the phone back on get into Battery Calibration then press the calibrate button
What's the general consensus on this i.e. Google engineer basically debunking the necessity or benefits of calibrating one's battery?
http://tweakmydevice.com/2012/01/no-need-to-calibrate-android-battery/
Related
After my phone charges to 100% it gets stuck at 100% and wont drain until I take it off the charger. I use spareparts to see voltage levels and it says its fully charged at 4.2 volts. After I take it off charge, battery drains rapidly to what I assume is the correct battery %. I was under the impression that battery levels go down to 96% then recharge back to 100% while pluggd in. I noticed these affects after several voltage lockups. I have tried wiping battery stats and multiple calibrationa but no cigar. Why is it that spareparts and other third party battery apps report full voltage and charge when it actually isnt while it is plugged into the wall. anyone deal with these issues?
Sent from my SCH-I500 using XDA Premium App
tk1o48 said:
After my phone charges to 100% it gets stuck at 100% and wont drain until I take it off the charger. I use spareparts to see voltage levels and it says its fully charged at 4.2 volts. After I take it off charge, battery drains rapidly to what I assume is the correct battery %. I was under the impression that battery levels go down to 96% then recharge back to 100% while pluggd in. I noticed these affects after several voltage lockups. I have tried wiping battery stats and multiple calibrationa but no cigar. Why is it that spareparts and other third party battery apps report full voltage and charge when it actually isnt while it is plugged into the wall. anyone deal with these issues?
Sent from my SCH-I500 using XDA Premium App
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mine stays at 100 for a while too.. But if you leave it for a long time it will say full.. Or at least it does on evil fascination.. Its probably bad battery stats.. Charge till full.. Power down.. Charge till full in power down state.. Unplug , plug back in.. Wait till full again.. then wipe battery stats in cwm.. Then use till it dies and recharge...
Sent from my frozen yogurt filled fascinate
When I charge my phone it only charges to 99%. I'll leave it in for a while, come back and it's only at 99%. Either charging in the wall, or on the computer. It used to make it to 100% then all of a sudden it just stays at 99% regardless how long it charges. So the charging light always stays on and never lets me know when it's fully charged.
Any idea why?
Thanks.
Mine does that too once in a while, randomly.
But the Sensation would do that to randomly.
Dunno why.
Battery is strange...
I get that too. But eventually it will get to 100%. There has been times where it was charged to 100% then suddenly drop to 99% even though it still plugged in.
Did you get your phone recently? I'm thinking its because the battery needs to be conditioned.
Mines always does that, as soon as I unplug it it jumps to 98%. Im hoping ARHD fixes this
I've installed Battery Widget (from Market) and it reports 100%. I plug in every night and in the morning it reads 100%.
zellroot said:
Mines always does that, as soon as I unplug it it jumps to 98%. Im hoping ARHD fixes this
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ARHD, what is that?
nguyendqh said:
ARHD, what is that?
Click to expand...
Click to collapse
New Amaze Android Revolution HD ROM by mike1986?
This happens with many devices. I have not seen this yet on my Amaze but I am sure at some point it will happen. Try turning the phone off and charging it to 100% then power it on also try running the battery all the way down and letting it charge to full UNINTERRUPTED over night. If those dont help you can always try another rom with better battery management or go into a t-mobile store and get a battery replacement if your battery is still under warranty. Hope this helps
HTC does this on a lot of phones. It is a safety default to keep the battery healthy and safe. I had this issue with the Evo. The only way to fully charge a battery is to have other a wall charger or a SBC kernel.
its the best sense rom known to man in my opinion.
daswahnsinn said:
HTC does this on a lot of phones. It is a safety default to keep the battery healthy and safe. I had this issue with the Evo. The only way to fully charge and battery is to have other a wall charger or a SBC kernel.
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My stock battery is 3.8v, and it only goes to 100% if I charge it in the phone. If I use my wall charger, it shows up at 99% when I put it back in my phone. I have two aftermarket batteries that show about 98% when charged from the wall. I am thinking that the phone charging circuit is set for 3.8v, and might possibly overheat the aftermarket batteries (3.7v). I saw one review that said these batteries melted the top of his SIM card. I'm not planning on trying that; I use the stock, charging every night, and swap the spares in if I run out of charge during the day.
I just remember hearing the same stories when I had my evo. You could charge for hours and unplug it and it would almost immediately drop to 99 or 98. So my previous statement may or may not help.
I charged mine over nite and woke up to it being 99%, left it for another hour or two and it hit 100%. I would say to leave it a little longer to get that last 1%.
Sent from my HTC_Amaze_4G using XDA App
For anyone who is running quicksense, if you want better battery life, charge your phone completely and go into recovery > Advanced> wipe battery stats. And done!
Sent from my HTC Amaze 4G using XDA App
RZJZA80 said:
I charged mine over nite and woke up to it being 99%, left it for another hour or two and it hit 100%. I would say to leave it a little longer to get that last 1%.
Sent from my HTC_Amaze_4G using XDA App
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I find that if my phone its powered off while charging, it shows 100. If powered on, it shoes 99.
Sent from my Dell Streak 7 using xda premium
this is normal for lithium ion batteries...it also depends how the manufacturer perceives the battery...some manufeacturers say that your phone is 100 percent but it might only be around 95-98...overcharging lithium ions are bad...also some manufacturers say you have 10 percent left while you might actually have 15 or maybe to percent left...this is a fail safe method to shut off the phone and keep the battery from draining completely WHICH IS REALLY REALLY BAD FOR LITHIUM IONS...OVER CHARGING THE BATTERY IS BAD TOO...perhaps htc's thresh holds are a little different and actual to the real battery life.
also not a good idea to use your phone or any lithium ion device while its charging
powering off your phone to charge it overnight is the best idea to give you lithium ion a long life but this is not practical. this is why it says 100 percent when you turn off the phone and 99 when you're phone is off....it confuses the phone: " A portable device must be turned off during charge. This allows the battery to reach the set threshold voltage unhindered, and enables terminating charge on low current. A parasitic load (which means using phone or turning screen on while its charging) confuses the charger by depressing the battery voltage and preventing the current in the saturation stage to drop low. A battery may be fully charged, but the prevailing conditions prompt a continued charge. This causes undue battery stress and compromises safety."
http://batteryuniversity.com/learn/a..._ion_batteries
http://forum.xda-developers.com/showpost.php?p=19651965&postcount=7
Is anybody having problems fully charging the battery to100 percent? I noticed the battery life has gotten worse since I owned the phone. it would always charge 100 percent. Now it only charges to about 98 percent. I made sure all active apps are turned off and running apps as well turned off. I will turn my phone off at least once a week and fully charge it overnight. I notice after doing this the battery life Is always worse.
Sent from my SAMSUNG-SGH-I717 using xda premium
Don't believe your battery bar...
Check the number of volts your battery has... its a much better indicator
Sent from my MB508 using Tapatalk
The phones charges to 100% and then it stops charging if left on the charger. So you will lose 2% or 3% of battery power before it start charging again. This is designed to help keep the battery healthy as its usually not a good idea to leave the phone charging for long periods of time.
I charge mine until the thing on the status bars pops up indicating "full" and then remove from charger. The "full" indicator pops up about a half hour after the phone shows 100% which I find odd however... That also might be a battery health thing as they probably don't want you to charge it to absolute max, so maybe by saying 100% whens its more like 97% that it helps with battery health...
omniphil said:
The phones charges to 100% and then it stops charging if left on the charger. So you will lose 2% or 3% of battery power before it start charging again. This is designed to help keep the battery healthy as its usually not a good idea to leave the phone charging for long periods of time.
I charge mine until the thing on the status bars pops up indicating "full" and then remove from charger. The "full" indicator pops up about a half hour after the phone shows 100% which I find odd however... That also might be a battery health thing as they probably don't want you to charge it to absolute max, so maybe by saying 100% whens its more like 97% that it helps with battery health...
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+1
It trickle charges for a while after hitting 100%, then shuts off giving you the "unplug me" notification, drains a few %, then back to trickle charging.
In the morning if you unplug it and then plug it back in it will be fully charged in less than 30 minutes. To the full 100%.
When I first got my phone I was playing with it so much (and testing out the true battery capacity) I was often plugging it in at night with a nearly dead battery - which takes longer to fully charge overnight. So by morning it had only stopped charging an hour or two earlier so it still showed 100% for a while. Lately its been at 60-70% so by morning it has been done for 4-5 hours. So after booting it often shows 98%. No difference in battery capacity, just a longer time post-charge where it has drained a percent or two.
techntrek said:
+1
It trickle charges for a while after hitting 100%, then shuts off giving you the "unplug me" notification, drains a few %, then back to trickle charging.
In the morning if you unplug it and then plug it back in it will be fully charged in less than 30 minutes. To the full 100%.
When I first got my phone I was playing with it so much (and testing out the true battery capacity) I was often plugging it in at night with a nearly dead battery - which takes longer to fully charge overnight. So by morning it had only stopped charging an hour or two earlier so it still showed 100% for a while. Lately its been at 60-70% so by morning it has been done for 4-5 hours. So after booting it often shows 98%. No difference in battery capacity, just a longer time post-charge where it has drained a percent or two.
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Thanks for all the replies. I guess it makes sense. it just seems to run down a lot faster everytime I turn the phone off and back on the next day. It must just be me
Sent from my SAMSUNG-SGH-I717 using xda premium
Try the unplug-then-replug routine one morning to restart the charging process. See if it is better that day. If it is, you are probably running into the same problem I talked about in my last paragraph.
,this is how i calibrate my battery,before i have 45min of standby it will decrease from 100% to 99% but now it is 2hours & 34min before it go from 100% to 99%,i felt the drain after 2 weeks of overusing my phone (1week playing paladog and 1 week flashing different roms,kernels and theming my phone with different launchers),
- Charge your phone to 100% while it’s on.
- Unplug it from the charger, power off, then charge for 15 minutes with it in a powered off state.
- Unplug charger from phone. Power it on, and then charge 15 minutes while the phone is on.
- Calibrate battery using battery calibration by NéMa then unplug charger reboot.
- Power on, charge for 15 minutes then unplug.
- Finished.
note: deleting battery stats(calibrating) don't increase your batterylife said by others and it is just a placeboo and i believe in them,but it fix my battery drain so why don't we give it a try,there is nothing to lose,battery drain is so annoying.
,thanks to NéMa for the awesome apps,
,thanks to jgezau for his thread as my reference,
,please hit thanks if this helps,
check this out...
1% fall in within an hour of stanby???
i unplugged the charger after full charge and didn't touched the phone for 5hrs...
kiran2cy said:
1% fall in within an hour of stanby???
i unplugged the charger after full charge and didn't touched the phone for 5hrs...
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Click to collapse
1% decrease in 2hours and 38 mins,as you can see i didnt fully left it in standby,i use it for text sometime,and also my phone signal is not that strong,but that's a best battery life 5+hours still 100%,^^,thumbs up to lewa i use it too,the m4 and m6,m7 is uploading now,^^
Great thanks man !
kiraXce said:
1% fall in within an hour of stanby???
i unplugged the charger after full charge and didn't touched the phone for 5hrs...
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Wich rom are you using?
Sent from my LG-P500 using xda app-developers app
I'd love to try this but powered off charging is not present on the rom i'm using.
Thanks
Sent from my LG-P500 running Ginger Snap
lipe082 said:
Wich rom are you using?
Sent from my LG-P500 using xda app-developers app
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Click to collapse
That was from LEWA OS, one of the best rom at that time...:good:
First and foremost, a Google engineer debunked the idea that batterystats.bin has anything to do with how the phone charges. By deleting it, you're actually inconveniencing yourself, as there will be a short period in which you won't have accurate stats.
Secondly, the O1 has a lithium ion battery. Lithium ion and lithium polymer batteries don't need to be calibrated, as they have no "memory" effect (you can read more on that here).
Moreover, these batteries have built in charge circuits that protect and regulate the battery. Ever wonder how the phone knows the battery temperature? It's pulling it off the charge circuit. That same circuit also prevents the battery from ever being overcharged or discharged fully, which is why that convoluted guide about calibrating your battery by draining it to "empty" and then recharging it to full doesn't work. Worse yet, intentionally draining your battery is actually counter-intuitive, as lithium-based cells wear more as their percentage of discharge increases (you'd be hurting the battery in your effort to calibrate it).
Your instructions aren't detrimental, so if it works for you, go for it. However, based on my understanding of these batteries, it seems to me that this procedure is inconsequential.
Besides, a new battery for the O1 is only $6 USD on Amazon or Ebay.
Any idea why the Xperia S only charges to 95% if you charge it whilst off but is happy to charge 100% when left on to charge.
It charges up to 100% then decharge down to 90% and so up again to 100% and it continues like this, to keep the battery as good as possible over a long time.
Sent from my LT26i using xda premium
I have the same problem. I turned off the phone at 23:00, put to charge, woke up at 07:00, removed from charge and turned on, it was %95. Actually it changes, sometimes %97 sometimes %98. But if i charge it when phone is on it charges to %100 and keep it like that..
On or not the battery will be jumping from ~95% to 100% when left on charge. If you use a battery monitoring app you can see that, even whilst on and charging at 100%, the voltage changes from about 4.2 to 4.1 volts and continually up and down again. This is to increase the battery life because lithium batterys do not like to be kept at 4.2 volts for exessive periods of time.
Sent from my LT26i
Battery monitor clearly shows the phone charging to 95% or 100% dependent of its off or on state, there is none of this charging discharging you are on about.
MrBelter said:
Battery monitor clearly shows the phone charging to 95% or 100% dependent of its off or on state, there is none of this charging discharging you are on about.
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When the phone is on, some battery power is used to maintain the screen backlight and the SoC. Therefore the overall battery consumption is higher, thus the system will charge the battery more, but it will actually stay at the same voltage.
Sent from my LT26i using XDA
The phone should charge to 100% when switched off and it clearly doesn't, you can give me all the charging mumbo jumbo you like but the handset should be at 100% when turned on but it never even achieves anything past 95%. Once the handset reaches 100% it should revert to a trickle charge not fanny about dipping 5% as is being suggested.
MrBelter said:
The phone should charge to 100% when switched off and it clearly doesn't, you can give me all the charging mumbo jumbo you like but the handset should be at 100% when turned on but it never even achieves anything past 95%. Once the handset reaches 100% it should revert to a trickle charge not fanny about dipping 5% as is being suggested.
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Click to collapse
It works this way, whether you like it or not. If you don't, go modify it and enjoy killing your battery.
Sent from my LT26i using XDA
MrBelter said:
The phone should charge to 100% when switched off and it clearly doesn't, you can give me all the charging mumbo jumbo you like but the handset should be at 100% when turned on but it never even achieves anything past 95%. Once the handset reaches 100% it should revert to a trickle charge not fanny about dipping 5% as is being suggested.
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Click to collapse
Yes, but things use to work in an optimized way, not in the way you would like to... Sony prefers to optimize the phone and the battery life than to make people happy by keeping 100% while decreasing drastically battery life...
K900 said:
It works this way, whether you like it or not. If you don't, go modify it and enjoy killing your battery.
Sent from my LT26i using XDA
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But the point is it doesn't!
Jorgitosms said:
Yes, but things use to work in an optimized way, not in the way you would like to... Sony prefers to optimize the phone and the battery life than to make people happy by keeping 100% while decreasing drastically battery life...
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Right I'll try one more time.
Turned off the phone charges to 95%, no higher and no lower and battery monitor widget can confirm this.
Turned on the phone charges to 100% and remains at 100% without variation until unplugged from the charger and battery monitor can confirm this.
You can see variations in both voltage and current as the charge cycle maintains either the off state 95% charge or the on state 100% charge but in either case the actual level of charge is without fluctuation.
Just picked my phone up from the changer. 99% battery.
I put the phone to charge overnight without turning it off and everyday I wake up at 100%
Sent from my LT26i using Tapatalk 2
Not showing 100% even while left ON and charging
Tops out at 95% or 98%, but keeps varying from time to time ..... I have had the phone (XPS) for three days and not seen a 100% charge till now . Also one thing I have noticed is that the Notification light turns from Orange to Green. That's when I normally take the phone off charge.
Mine charges to 100% and stays at 100%.
mine SXS takes 20 minutes from 99 to 100%.
MrBelter said:
Any idea why the Xperia S only charges to 95% if you charge it whilst off but is happy to charge 100% when left on to charge.
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Click to collapse
Under UK generic .75 the phone charges all the way to 100% while off now
iamthad said:
Tops out at 95% or 98%, but keeps varying from time to time ..... I have had the phone (XPS) for three days and not seen a 100% charge till now . Also one thing I have noticed is that the Notification light turns from Orange to Green. That's when I normally take the phone off charge.
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The led turns green at 90%. That's when it slows down charging to protect the battery..
Sent from my LT26i using Tapatalk 2