Database Users

Battery Power Drops from 100% to 90% in about 3 mins?

Has anyone else seen this? From 100 to 90% the power just drops almost instantaneously but after 90% its normal.

Already been brought up, a lot.
Apparently when your phone charges up it stops once it reaches ~100% and begins discharging, even though it is still on the charger. People will turn their phone off after a full charge and charge for an additional 20min to an hour before they get another green LED. People have reported much longer battery life when doing this, but it is a pain in the ass.

Studmf said:
Already been brought up, a lot.
Apparently when your phone charges up it stops once it reaches ~100% and begins discharging, even though it is still on the charger. People will turn their phone off after a full charge and charge for an additional 20min to an hour before they get another green LED. People have reported much longer battery life when doing this, but it is a pain in the ass.
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Ahh interesting. I thought I was running into an old winmo rom flashing issue where if you flashed under 50% battery life you could never charge the device above that point.

Yea it sucks but it works... I just ordered an external battery charger since I have 2 batteries now so I don't have to do this anymore
Sent from my ADR6300 using XDA App

two_cents said:
Yea it sucks but it works... I just ordered an external battery charger since I have 2 batteries now so I don't have to do this anymore
Sent from my ADR6300 using XDA App
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Hmm i tried and it acted the same way.

Apparently the HTC models act like older phones did back in the day. What HTC needs to do is put something on the phone face itself when new that says "CHARGE FOR 4 HOURS BEFORE INITIAL POWER ON FOR MAXIMUM BATTERY LIFE."
Once you do this once you dont have to keep doing it. I also powered on my phone the minute I got it and activated it without charging it first and I was seeing this issue until I did a power off charge. The phone runs from 6am to 11pm without an additional charge cycle in the day and that is a huge improvement for me. I was charging the phone twice to three times daily.

X10 only charges to 98%?

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.

[BUG] Full Charge Oddity, Charge to 100%, Unplug to 97%

[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%?
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This is normal, search some threads

slowz3r said:
This is normal, search some threads
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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%?
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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.
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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/
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<- 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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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

wow, crazy battery

Ok, I never did this before, but my phone was at 100% charge and I decided to turn it off and charge...... Well it took about 1 1/2 hours and the light finally turned green. So I took it off the charger and plugged it back in and now its been charging for over 2 hours and the light is still red!!
I wonder if this is why my phone was dying so fast. I cant believe that even though my phone said it was at 100% its been charging for over three hours OFF and its still going.
This is just crazy.

I found on the evo forum, can't remember the link, that our batteries have different cells. Charge your phone for up about 6 to 8 hours, while on, turn it off when fully charged, then unplug charger and plug charger back in when led goes off and charge until led turns green again. Repeat that process of unplugging charger until led goes off and plugging back in until green a total of 10 times. From what I read, it's supposed to help improve battery life. I haven't tried it myself so I can't verify it works.
Sent from my PC36100 using XDA App

jbroyles_23 said:
I found on the evo forum, can't remember the link, that our batteries have different cells. Charge your phone for up about 6 to 8 hours, while on, turn it off when fully charged, then unplug charger and plug charger back in when led goes off and charge until led turns green again. Repeat that process of unplugging charger until led goes off and plugging back in until green a total of 10 times. From what I read, it's supposed to help improve battery life. I haven't tried it myself so I can't verify it works.
Sent from my PC36100 using XDA App
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Thats exactly why Im doing it. I had an evo before and did this, but it never charged for more than 15 min when it was off!

jbroyles_23 said:
I found on the evo forum, can't remember the link, that our batteries have different cells. Charge your phone for up about 6 to 8 hours, while on, turn it off when fully charged, then unplug charger and plug charger back in when led goes off and charge until led turns green again. Repeat that process of unplugging charger until led goes off and plugging back in until green a total of 10 times. From what I read, it's supposed to help improve battery life. I haven't tried it myself so I can't verify it works.
Sent from my PC36100 using XDA App
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I've also read bump charging like that can be seriously detrimental to battery health over time...besides this phone doesn't need it...just recalibrate the battery by letting it die until it won't turn on, then I like to pull the battery for 30 seconds to make sure it really resets but not sure its actually necessary....then charge it while off til the light turns green...I usually unplug before I turn it back on....I've gotten pretty stellar battery life with moderate use since doing that and rooting and removing bloat helps even more....like 25-35 hours (will be less if you use it heavily, tons of videos and games will kill it quicker, but even with reasonable amounts of games and vids you can hit 25 hrs for sure)....I've read doing this about once a month is good but letting it die too often is bad too

StAlphonso said:
I've also read bump charging like that can be seriously detrimental to battery health over time...besides this phone doesn't need it...just recalibrate the battery by letting it die until it won't turn on, then I like to pull the battery for 30 seconds to make sure it really resets but not sure its actually necessary....then charge it while off til the light turns green...I usually unplug before I turn it back on....I've gotten pretty stellar battery life with moderate use since doing that and rooting and removing bloat helps even more....like 25-35 hours (will be less if you use it heavily, tons of videos and games will kill it quicker, but even with reasonable amounts of games and vids you can hit 25 hrs for sure)....I've read doing this about once a month is good but letting it die too often is bad too
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I tried that and for some reason while I was at school it would lose about 15% battery life while I was in class for about 1 1/2 hours with no use at all.

I use the tunein app while at work and I can start at %100 and after about 2 hrs it's down to %20

Ok, so its been like 10 hours the light turned green once I unplugged and plugged back in and the light stayed red for another two hours. I gave up and turned it on while it was red..... Battery was at 96%..... Wtf
Sent from my PG06100 using XDA App

when i charge my batt, i never charge it above 95%, and it actually last 2-3 hrs longer than a full charge.
Also if you notice, when u unplug it from a full charge, within the first 10-15min it goes down to 95-90%...
what im assuming is the phone over estimates its charge, and ends up over charging. then it has to let off the excess?? psh idk im only guessing based on observing

This article helped me a lot:
http://phandroid.com/2010/12/25/you...is-lying-to-you-and-its-not-such-a-bad-thing/
^ Shift Faced

They design phone batteries these days so that you do not need to do these crazy tricks. In the past it was useful, but not anymore
Sent from my PG06100 using XDA App

EricSS619 said:
I tried that and for some reason while I was at school it would lose about 15% battery life while I was in class for about 1 1/2 hours with no use at all.
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Mine would do that too. Take a close look at your time without signal. I notice that I have horrible signal or that I am roaming when I'm in huge lecture halls. You use more battery life when your phone is contantly looking for signal.
Sent from my PG06100 using XDA App

[Q] Major Battery Problems with Nexus 4 - Help Please

Backstory: I've had my Nexus 4 since December 2012. I lived in San Francisco using T-Mobile through August 2013, and I've just moved to Sydney. I got a new sim through Vodafone here, and everything went well. Though my battery did drain a bit faster than usual, I employed Greenify and pretty much solved my problems. Fast forward to this weekend, I used my phone heavily all day and turned it off once it hit 2%. After getting back home for the night, I used it heavily while charging and everything battery/power wise and otherwise was behaving as expected. I went to bed with my phone draining and at roughly ~40% (making a guess) and not on the charger. I woke up at ~3AM, put the phone on the charger, and when i woke up at 6AM, it had only charged to 67%. This was my first sign something was wrong as I usually get a full charge in less than 3hrs. Over the course of the day, I monitored my phone and notice that whether on or off it charges extremely slowly as in 6+ hours still doesn't get to 100%. Additionally, using the phone while it's on the charger is net negative on the battery's charge as in it decreases albeit very slowly while using it on the charger.
I had my phone plugged in last night, and took it off the charger at 2AM at 100%. When I woke up at 6:15AM, I took the following screenshots (attached).
You can see that over 4h 15m off the charger and with no use the phone drained 44% with 37% coming from phone idle, 23% from cell standby, and 15% from wi-fi. This seems ridiculous to me. Can anyone help? What kind of troubleshooting can I do? It feels to me like this is hardware related as I get the problems whether the phone is on or off, but I'm not sure. I'm currently rooted and using AOKP Milestone 2. Here's a screenshot from about phone (attached).
Thanks for any help in advance! I'm really hoping to be able to fix this with software changes as I'd hate to have to buy a new phone with the Nexus 5 right around the corner.

88nexus88 said:
Backstory: I've had my Nexus 4 since December 2012. I lived in San Francisco using T-Mobile through August 2013, and I've just moved to Sydney. I got a new sim through Vodafone here, and everything went well. Though my battery did drain a bit faster than usual, I employed greenify and pretty much solved my problems. Fast forward to this weekend, I used my phone heavily all day and turned it off once it hit 2%. After getting back home for the night, I used it heavily while charging and everything battery/power wise and otherwise was behaving as expected. I went to be with my phone draining and at roughly ~40% (making a guess) and not on the charger. I woke up at ~3AM, put the phone on the charger, and when i woke up at 6AM, it had only charged to 67%. This was my first sign something was wrong as I usually get a full charge in less than 3hrs. Over the course of the day, I monitored my phone and notice that whether on or off it charges extremely slowly as in 6+ hours still doesn't get to 100%. Additionally, using the phone while it's on the charger is net negative on the battery's charge as in it decreases albeit very slowly while using it on the charger.
I had my phone plugged in last night, and took it off the charger at 2AM at 100%. When I woke up at 6:15AM, I took the following screenshots (attached).
You can see that over 4h 15m off the charger and with no use the phone drained 44% with 37% coming from phone idel, 23% from cell standy, and 15% from wi-fi. This seems ridiculous to me. Can anyone help? What kind of troubleshooting can I do? It feels to me like this is hardware related as I get the problems whether the phone is on or off, but I'm not sure. I'm currently rooted and using AOKP Milestone 2. Here's a screenshot from about phone (attached).
Thanks for any help in advance! I'm really hoping to be able to fix this with software changes as I'd hate to have to buy a new phone with the Nexus 5 right around the corner.
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Is anything wrong with your battery? If it is in very bad shape, you should probably get a new battery.

I don't know that even excessive wake-locks would cause a phone to charge that slowly, especially a Nexus 4.
Was it on the dedicated wall charger? Have you tried multiple chargers? Multiple wall sockets?
tykate said:
Is anything wrong with your battery? If it is in very bad shape, you should probably get a new battery.
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What's the battery replacement like for the N4? Can't be an easy job that's for sure.

Try factory reset if not battery might be taking a dump
Sent from my Nexus 4 using xda app-developers app

I've used multiple chargers, usb cords, from computer, dedicated wall charger, etc. and it behaves no differently. How can I test to see if my battery is in bad shape or not? Also, how would you suggest replacing the battery?

88nexus88 said:
Also, how would you suggest replacing the battery?
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http://www.youtube.com/watch?v=5FlLncBp6jI

Even though the battery stats isn;t showing the phone as awake, I wonder if there is an errant app causing a wakelock. I would definitely check with better battery stats to see if anything is preventing your phone form sleeping when not in use.

mattb3 said:
Even though the battery stats isn;t showing the phone as awake, I wonder if there is an errant app causing a wakelock. I would definitely check with better battery stats to see if anything is preventing your phone form sleeping when not in use.
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The problem is that it's not only discharging quickly while on but charging slowly while off.

advocat3 said:
The problem is that it's not only discharging quickly while on but charging slowly while off.
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Agree, that doesn't sound normal. Still I would check before buying a new battery.

Do a *#*#4636#*#*
Look at Battery information
See if there is anything telling.

illru said:
Do a *#*#4636#*#*
Look at Battery information
See if there is anything telling.
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Attached is what I see. Everything looks normal to me? Not sure what I should be expecting though.

When in doubt, frag out.. I mean BBS out..
Use betterbattery stats and it gives a lot more info and may help you pinpoint the issue..
Sent from my Nexus 4 using xda app-developers app

88nexus88 said:
Attached is what I see. Everything looks normal to me? Not sure what I should be expecting though.
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94.64 degree fahrenheit for the battery. Is that high?
edit: Mine says 95 degrees

It seemed that google play services was sucking most of the juice, but this isn't always the case. I decided I was just going to go with flashing a new ROM, but even with USB debugging on and Connect as Media Device checked off in USB Computer Connection, I can't get my computer to recognize my phone via USB. I've tried this with two different cords, multiple ports on my computer, and even with a friend's computer. I'm starting to think my phone has just completely **** itself. Any advice?

advocat3 said:
94.64 degree fahrenheit for the battery. Is that high?
edit: Mine says 95 degrees
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your body temperature averages 98.6F. keeping your phone off and in a tight pocket on a warm day could raise the temperature to 95F. so, is 95F high?

Got exactly the same problem, already replaced the battery, but that wasn't the problem. Can t RMA because I'm not on the country Where it has been bought, so I'm really with my hands tied in here.
I already thought it could be the Qualcomm Power manager (IIRC) that is damaged, but that chip is soldered onto the mainboard..
Sent from my Nexus 4 using Tapatalk 4

Edit/Update: Phone completely **** out today, won't turn on, and only displays a solid red LED light for ~60 seconds after plugging into a wall charger. Good thing it's in warranty I guess.

88nexus88 said:
Edit/Update: Phone completely **** out today, won't turn on, and only displays a solid red LED light for ~60 seconds after plugging into a wall charger. Good thing it's in warranty I guess.
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ohhhh holy crap...
Dont worry. just charge your mobile for atleast 8 hrs and then switch it on.