OK guys,
I let the battery on my phone purposely drain completely until the phone shut off on its own. The battery status was at 3% before I let it drain, then I would imagine it went to obviously 0%. So, I took the battery out for about five minutes to cool off, I put everything back, and plugged the phone to a USB port to charge. To my surprise the battery level displayed at 67%. I think something is not correct here. Charging the phone with a micro usb cable from 0% to 67% in a few seconds is not possible. What is that, supersonic charge?
Can someone please explain what is going on here? Could it be the ROM? Is someone having the same issues?
Thanks,
Jose
Samsung Galaxy S 3G
Rooted with Axura 2.3.1.3
The battery may not be calibrated correctly. You can download the Battery Calibration app off the market for free. Charge your phone to 100%, open the app, click the calibrate button, then unplug from the charger. After that let your battery drain completely until your phone shuts off then charge without a break back up to 100%, and you're battery should be accurate.
Sent from my ZenDroid using XDA Premium App
I'll check that. Thanks for the info.
Mine does that all the time, no matter how many times i've calibrated the battery.
Agreed. I have calibrated my battery several times and when I hook my Vibrant to charge, after a few minutes it reads 65% or something of the sort when it was at 10% earlier
Related
Hi guys,
My xperia x10 only charges up to 98% anyone know why its like that?
Thanks in Advance
Double check that you are removing it right as it finishes charging. There are a few posts already detailing what that the x10 will stop charging once it reaches 100%, and will not resume until the battery drains below 90%.
Sent from my X10a using Tapatalk
What makes you say that??
Reason I ask is because once the phone is fully charged it will stop charging and start to drain down to c.90% when it will kick in again..
Alternatively.. if you have a genuine problem, it could be that your battery needs re-calibrating... drain it completely till the phone switches off.. then fully charge it with no use.. redrain it, then recharge it again..
i know its not going to 100% because I was watching it and using juice plotter. Also I think this might be the calibration problem. Another weird thing, is that I have to "force" it to go up to 98 but it usually just stays at the highest as 94 or 95. Also how many times do I have to discharge it.
2 or three should do it.. see how it goes.. are you using the SE charger by the way?? it 's a bit sensitive to non OEM chargers..
ya im using the SE charger
Honestly with the new batteries, you should not fully discharge them. Li-ion batteries lose their capacity if you discharge them. I have learnt this lesson the hard way with 2 laptop batteries. I always keep my x10 above 10% and it is still at 100% health.
Sometimes, when you are monitoring the battery with 3rd party applications,
the indications are a bit off.
For example, I am using Battery Status widget and I've set it to update every five minutes, so that it won't drain the battery instead of just indicating it.
So, when the phone is charging, sometimes the light goes off (meaning 100% charged) but the widget shows 97% or 98%. And 5 minutes later it shows fully charged.
So, it could be a fault to the software you're using and not the phone or the battery's at all.
When the green LED goes off, go to Settings>About>Status and check what the percentage under battery level is. If it is 100%, you're just fine.
macdaddy... These aren't li-ion
. They're li-polymer.. They don't need conditioning. But they do sometimes need re-calibrating.
Sent from my x10 using XDA and swype.
I charged my phone to 100%- then as soon as I unplug my phone, the percentage drops to 95%. Is this a battery reconditioning problem? I have 2 batteries- both brand new. The phone is only one week old.
I get the same thing. I think its software related. Mine drops to 97% n then I plug it in n charge more to 100...then I unplug and charge some more. Eventually it'll stay at 100% when I unplug it. This happens even after I've reconditioned the battery.
Sent from my SGH-T959 using XDA App
same thing happens to me =[ I tried reconditioning the battery but its still the same. I'm going to try reconditioning again and see if it helps.
Yes
Sent from my SGH-T959 using XDA App
mines too!! it drops to 97%. but today i let myphone died then i plugged it in and left it all night after unplugging it it stayed at 100%.
I've experienced the same situation, but only if I unplug it immediately after it says 100%. Now, I let it charge about 30min after it says 100% and when I unplug it, it stays. Not sure if its battery condition or the software. I don't pay all that much attention to it.
When I unplug my phone it goes to 97%. I find that it I plug it back in after 10 mins and let it charge for half an hour, my phone will last almost till 11pm. If I don't do it then I struggle to make it to 6pm. Not sure what is going on here.
Sent from my SGH-T959 using XDA App
Never happens to me. Maybe because I'm using juice defender.
Sent from my SGH-T959 using XDA App
Have you guys ever cleared your battery history?
Pretty much all of the weird reading anomalies are merely software/calibration of what percentage the battery is actually at. The actual voltage is pretty much never affected.
Note: Having two batteries can also make weird stuff like this happen as the device calibrates for one battery and then you change it. Just use the gauge as a rough estimate, treat it like the gas gauge in your car.
Remember lithium batteries do not have a linear mAH remaining to Voltage correlation so the calibration is very important and if off even slightly can cause weird things with the "percentages", this is true on all phones, not just the Vibrant.
This is also happening to me, i just let it charge for 30 more minutes then it will stay for %100 but after awhile it will have a huge drop. my phone's battery is getting worse and i'm using wifi everyday.
Once your phone is fully charged, unplug the charger and plug it back in. it will take a little while to tell you that it is fully charged. unplug it and then plug it in again. do this 3 or 4 times. Then when you unplug, your battery will say 100%. I reconditioned my battery after unplugging and replugging 6 or 7 times and now i always have 100% battery after just 1 unplug in the morning.
I'm looking to calibrate my battery on my Epic (epic experience froyo.) I am not sure how to do it and I cant seem to find a thread. Any help would greatly be appreciated. Thanks
Charge your phone to 100%.
Boot into Clockwork recovery.
Advanced>Clear/Wipe Battery Stats
Boot up and start using your phone. Use it until it dies.
Charge back up to 100%, not interrupting the charging.
Your battery is calibrated.
my battery charges to 97% and the blue led comes on. is that 100% but displays 97?
odd...now it charged to 100...lol im so confused
Is there a fast way to drain it to zero?
Or does draining it faster than average use cause calibration to be off?
Sent from my SPH-P100 using XDA App
Battery calibration is covered in a few different places on multiple threads.
warlar12 said:
odd...now it charged to 100...lol im so confused
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Click to collapse
muyoso is right - I do that 2-3 times to define the trough and crest (valley and peak) of battery life.
It isn't good for the battery health to drain it past the point it first shuts off (so don't turn it back on until its powered externally). It also isn't good for battery health to overcharge (er, "bump" charge it repeatedly to full).
So when you get to 100% (or when it tells you its "full" - may appear as 97 or 98 - just follow the pop-up) its ready to be unleashed.
Of course, I didn't define the battery management software for the phone so I don't know for sure. But this seems to be the common wisdom contained in the threads here. Good luck.
I have found that some kernels charge to 100 and then let it drain to 96% or so before recharging to 100%. They repeat this over and over until you unplug it, so when you unplug it, its the luck of the draw as to what percentage you are at. Some other kernels charge to 100 and keep it there until you unplug it.
There should be an article in the wiki, or at least a guide for the begginers. Lol at least I havn't bricked my phone yet.
I've had this same problem even with Calibration. Sometimes I get 100, sometimes I dont. With the external dock charger, it never tells me less than 100 though on my extra batteries, but my phone is luck of draw like said before.. I've calibrated twice, and I dont have the patience to do it anymore.
[Q] Wifi Tether: Subject to $15 T-Mobile Charge?
Curious about this. Currently I'm connected to my laptop for the past 15 min just fine; no alert came up that said I had to get the $15 fee that T-Mobile charges for the "privilege" of tethering on my current plan. Does that mean that an unlocked phone isn't subject to T-Mobile's tampering?
If so, is this the only value for rooting right now? I don't see any other need for root with this phone except if it fools T-Mobile.
Thanks in advance for your answers.
I know there are numerous threads about battery life, but this one isn't about the life itself really.
I can charge my phone to 100%, but when I unplug it, the battery indicator shows 97% right away. I plug it back in, rinse and repeat, and get the same issue. I even tried charging with the phone off.
Ha anyone had luck with using a full 100%?
allen099 said:
I know there are numerous threads about battery life, but this one isn't about the life itself really.
I can charge my phone to 100%, but when I unplug it, the battery indicator shows 97% right away. I plug it back in, rinse and repeat, and get the same issue. I even tried charging with the phone off.
Ha anyone had luck with using a full 100%?
Click to expand...
Click to collapse
This is normal, search some threads
slowz3r said:
This is normal, search some threads
Click to expand...
Click to collapse
I see that some people don't get to 100% during the actual charge process, but haven't seen my issue yet. I'll keep looking. So many of these threads...thanks.
Just trying to figure out whether it's worth going back for another phone or battery. What would you do?
Id keep it, there was an article posted in one of the threads stating why phones do this...the N1 did a similar thing where after it charged going from 100-96 percent went really quickly
i would equate it when you buy a 16 gig SD card and it shows as 15.6 gigs
Same thing here... pretty sure it's happening to most people.
Read this: http://byrong.com/PowerTesting/
allen099 said:
I know there are numerous threads about battery life, but this one isn't about the life itself really.
I can charge my phone to 100%, but when I unplug it, the battery indicator shows 97% right away. I plug it back in, rinse and repeat, and get the same issue. I even tried charging with the phone off.
Ha anyone had luck with using a full 100%?
Click to expand...
Click to collapse
Mine did this until I calibrated the battery. Charged it to 100%, then drained it all the way. Charged it back up to 100%, and now not only does the battery last longer, but the percentage seems to go down in a more linear fashion.
Read on...
http://www.androidpolice.com/2010/1...bump-charging-and-inconsistent-battery-drain/
Sent from my GT-I9000 using XDA App
brianbrain said:
Mine did this until I calibrated the battery. Charged it to 100%, then drained it all the way. Charged it back up to 100%, and now not only does the battery last longer, but the percentage seems to go down in a more linear fashion.
Click to expand...
Click to collapse
Same here, I've done this two nights in a row, but no change.
Thank you for the links, guys. Pretty insightful actually. I've got it charging right now at 99%. As soon as it hits 100%, I'll take it off and see if it drops instantly. I'm guessing it shouldn't as it JUST hit 100%. But we shall see..
Thanks again!
Same issue here afetr the caliberation and all
I really wouldnt worry about it guys, not like magical unicorns are eating your percentages
Well...I mean, it's not something anybody is "worried" about, but it does suck because I use my phone heavily as I'm in the IT field ... so every percentage counts. After I just unplugged, it went to 99% which my N1 did as well. I'm fine with 99%, but 97% seemed a bit low.
Full charge oddity
When the phone has been switched off and charging the phone shows the fully charged icon on screen when charging appears to be done. Battery Indicator Pro displays only a 95% charge when the phone is switched on. The same happens when the phone is on and being usb charged. When 100% charge is shown and the usb cable is removed the charge is then shown as 95%. This does not happen on my other devices running 2.2. They will show 100% or 99%. A device design or 2.3 bug?
Read this whole post:
http://forum.xda-developers.com/showthread.php?t=871051
The epic 4g has this problem. I think its something with samsung. You have to unplug it, plug it back in, let it charge to full again and rinse repeat until its really at 100%
Then reset your battery stats in cwm
Sent from my SPH-D700 using XDA App
As noted in the stickied FAQ and further discussed in the link provided by nxt (Beat me to it!), this is by design folks.
unremarked said:
Q: I unplugged my phone, and my battery dropped from 100% to 95% immediately, or it won't/takes along time to charge past 99%, what gives?
This is by design. Your phone will slow down and eventually stop pulling charge at or slightly greater than ~95% regardless of what your battery indicator says. This is to extend the overall life of the battery, as constant 100% to 0% charge/discharge cycles will cause it to fail prematurely. If you're interested in really pushing it to 100%, you can use a technique that is called "bump charging" and is better detailed here: http://www.androidpolice.com/2010/12...battery-drain/
Click to expand...
Click to collapse
<- Link has more or less the same info as nxt's.
maybe we need multiple FAQ stickies in this board..
Weird battery reading
My Nexus S was at about 16% when I put it on the charger then I did a quick reboot and it said it was at 52%. I unplugged it, powered off, pulled the battery, then rebooted and it read 28%. Even that is hard to believe after less then 5 minutes of charging. Has this happened to anyone else?
Stock 2.3.1 unrooted
Sent from my Nexus S using XDA App
deyna said:
Has this happened to anyone else?
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Click to collapse
Yes, that has been reported by a number of people. It has happened to me as well when rebooting while charging. Nothing is wrong with your battery though, it just must be a battery stats bug.
Good to know. Thank you for the prompt reply
Sent from my Nexus S using XDA App
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Tony_YYZ said:
So I thought this was a fluke the first time then I was just able to reproduce the issue again. Once the battery level reaches 20%, the tablet will either shut itself down using the built in shutdown command or will just simply power off as if it doesn't have any power left at all.
I've charged it thoroughly and have even drained the battery down to 1% in the past but this keeps happening now. Any ideas?
Stock ROM/Rooted/TWRP
Click to expand...
Click to collapse
this hasn't happend on my nexus yet but something similar happened to my LG Nitro HD. I basically rooted it and tried some battery calibrating apps on the Play store. In custom recoveries there's also this option to wipe batter status which i think might fix it but i've never tried it.
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
Tony_YYZ said:
will just simply power off as if it doesn't have any power left at all.
Click to expand...
Click to collapse
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
tni.andro said:
The battery gauge can be quite inaccurate. From what I have seen, I think Asus cut some corners in calibrating it for the specific battery chemistry - which makes things even worse.
It's not as if, there is no power left. The battery gauge simply had a wrong estimate of the remaining charge and suddenly the battery voltage collapses (happens very quickly towards the end of the discharge curve) and the N7 shuts down.
Messing with the battery stats doesn't do anything useful.
If you do a full charge / discharge cycle that may help a little with battery gauge accuracy. The battery gauge does some recalibration when doing that.
After a forced shutdown, fully charge and make sure the tablet sits around fully charged for at least 1h (e.g. just plugging it in over night will do fine). Then do a full discharge cycle with the N7 not plugged in at any time (normal usage will do just fine).
Those battery calibration apps don't anything useful, beyond getting you to run a full charge / discharge cycle.
Click to expand...
Click to collapse
NovaSense said:
Never happened on my Nexus 7, which have been taken down to 14% more than 10 times in the last 2 month. If what are suggested above don't work then use this tool to restore stock then Warranty return it or return it to store if you still have time,
Click to expand...
Click to collapse
Kohawk09 said:
Wonder if this is what happened to me last night. Was watching a video and it just shut off like the battery was dead. I wasn't paying attention to the battery but was almost positive it wasn't anywhere near zero yet. Never had the low battery pop up on me either. Hopefully it was a fluke...
Click to expand...
Click to collapse
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I had tried completely discharging it and then leaving it to charge overnight a handful of times without any luck. I ended up just restoring it to factory state and getting a replacement via Google Play Warranty Support. The new unit works just fine. It's an 07/2013 build unit just like the first one if anyone was interested.
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
millicent said:
there are many battery calibration issues/posts in old N7 forums. it also happened to me once in first couple weeks. what helped, I think, was shutting down the device completely with a little bit of battery left and just keep it unplugged for a few hours. Some say to preventively repeat this exercise every now and then..
Sent from my HTC One using Tapatalk
Click to expand...
Click to collapse
I can confirm this!
Did help on many devices for me with battery calibration erros...
Last one was a Galaxy S2 last weekend - turned of immediately, showed 0% upon start.
Took battery out for 4 hours, put it back in then and voila... 92% and everythings fine again.
junkinmytrunk426 said:
by any chance do you use a qi wireless charger?
I have encountered a weird bug where if I charge my nexus 7 with a qi charger to 100% and leave it on the charger itll screw up the percentage/battery stats. with my situation, itll lock my battery % to 100% and wont go down until i go into twrp. If i just go into twrp and not recalibrate the battery stats, the percentage would be off and my nexus wont show the right %, so my nexus would shut off at random % instead of the normal 1% or 0.
Click to expand...
Click to collapse
No, I do not have a QI charger. I was always using a USB wall charger.