Database Users

Battery level drops to 99%

Anyone out there notice that on a completely full charge using the AC charger, the minute you pull out the charger, the batt indicator on the TAB will drop to 99% ? The 100% only last a couple of seconds!!! No apps running , wifi, BT, GSM is all off.
Is this normal ?

Yup. Same thing happens here. I think it's normal. Same thing happens with my mobile phone.

Thanks.. but this never happens to my mobile phones and that includes Samsung Omnia, Omnia II and Omnia Pro..

As soon as i pull my plug i am showing 98%.

Yep, I was wondering that too. It goes straight to 99%. I guess it's some bug, it doesn't really go to 99%

It's just rounding down, but think about it:
The moment you unplug it, you're consuming battery power.
If you've consumed any battery power, it can't be at 100%, now can it?

I really don't see the problem with it dropping to 99% .. really i don't !!

Croak said:
It's just rounding down, but think about it:
The moment you unplug it, you're consuming battery power.
If you've consumed any battery power, it can't be at 100%, now can it?
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Click to collapse
SMARTA$$

sorry guys stupid question. How can i check battery %?

pda_crazy said:
sorry guys stupid question. How can i check battery %?
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Click to collapse
Any number of ways, but I have been using the "Batterylife" widget from curve fish on the market.

Thanks i installed it. I noticed that my battery drains quiet quickly, my tab was in stand by mode for 30 to 45 min and i battery drains by 9%. I just bought it this afternoon could please guide.
Sent from my GT-P1000 using XDA App

cmloo said:
Anyone out there notice that on a completely full charge using the AC charger, the minute you pull out the charger, the batt indicator on the TAB will drop to 99% ? The 100% only last a couple of seconds!!! No apps running , wifi, BT, GSM is all off.
Is this normal ?
Click to expand...
Click to collapse
With a lot of android devices the battery is not calibrated with the system, there was a post on how to do this with a nexus one. i used it on my vibrant and it worked the same. it was a series of steps like plugging the phone in, powering off, powering on, unplugging again, weird stuff like that. and it actually works. sorry i dont know where the post is or the exact steps to do.

donniestarko said:
it was a series of steps like plugging the phone in, powering off, powering on, unplugging again, weird stuff like that. and it actually works. sorry i dont know where the post is or the exact steps to do.
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I did this for my captivate and works well:
1. Connect the phone to the charger with the phone powered on, and allow the phone to charge until it shows 100%
2. Disconnect the phone from the charger, and power it off.
3. Reconnect the phone to the charger with the phone powered off, and allow the phone to charge until the battery indicator shows 100% (you can use vol-up/vol-down to make the indicator come back up when the screen goes to sleep).
4. Disconnect the phone from the charger and power it on.
5. Once the phone is powered completely on, power it off again and reconnect it to the charger until the battery indicator shows 100%.
6. Disconnect the phone, power it on, and use it.

Hey, it doesn't happen to me so you must have something else going on.

The only thing that matters is how long the battery lasts between charges.
The percentage of charge shown on a battery gauge widget is meaningless unless the battery is draining abnormally in relationship to the way the tab is being used.
I find that my tab drains from 99% to 60% in about 2.5 hours with wifi on, GPS on, bluetooth off. It then takes another 4.5 hours or so to drop from 60% to about 10% under the same conditions. So... 7 hours of continous wifi on web browsing isn't much to complain about.

Croak said:
It's just rounding down, but think about it:
The moment you unplug it, you're consuming battery power.
If you've consumed any battery power, it can't be at 100%, now can it?
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Click to collapse
LMAO!!!!
He DOES have a point.

Croak said:
It's just rounding down, but think about it:
The moment you unplug it, you're consuming battery power.
If you've consumed any battery power, it can't be at 100%, now can it?
Click to expand...
Click to collapse
exactly..

Most modern electronic devices on Li-ion batteries do this. When the device reaches 100%, it will stop charging to prevent damage to the battery. The battery then drains to 90-95% and the charging circuit allows the battery to charge again. Most systems hide this by displaying the battery level at 100 or 99% for a while after the device is unplugged. Hope this helps!

My nexus 4 refuses to turn on while attached to the charger

I got my nexus 4 on Tuesday morning, plugged it in to the charger, waited until it reached 100%, then inserted my sim card, turned it on, upgraded through OTA from 4.2 to 4.2.2 and then set up my usual things. I discharged the battery from 100% to 16%, then I turned it off and plugged to the charger. I turned it on when it was at 95%, and unplugged from the charger because I had to get out of home. This morning it was roughly at 30%, then I turned it off and plugged it to the charger. Later I turned it on, it was at 93%, so I waited until 100% before unplugging. It stood ages at 99%, so I turned it off. A little bit later I tried to turn it on, and when I pushed the power button it showed that the battery was charged, then the image disappeared and the led began blinking in red until I released the power button. I unplugged it, then powered on, and it booted, everything as normal: but the battery was on 94%. I plugged it in and after one minute it was already at 99%. I turned it off, then pressed the power button, but same behaviour: image, then red led blinking. So I plugged the phone to my galaxy nexus charger, waited for a little, and then same behaviour again. So I unplugged it, turned it on, and when I was in the system I saw that the battery was on 100%.
Now the battery is normally discharging while using it, no strange values.
What should I do now? Should I let it discharge until it turns off, or should I never let it discharge until it turns off? And should I charge it with the stock charger or the galaxy nexus charger? I'll be grateful to everyone makes me know what he thinks.
Excuse me for my poor English and for how much I wrote, I would make things clear as possible.
Sent from my Nexus 4 using xda premium

I am sorry for my lazy, I only skim through your post, but I do read the question.
I read somewhere in this 4rum that the Nexus4's battery can be charged at anytime you want.
FOr me, I usually use the phone until 20-30%, then I turn my phone off and charge.
For my brother, he charge without any pattern, and he doesn't turn the phone off when charging.
For my own opinion, you shouldn't use the phone until the batter is empty.

Notice the same thing 3 times with my Nexus. Have searched for a answer to this but no one has a answer I guess or just ignore it. I just power up without it being plug in ..

R: My nexus 4 refuses to turn on while attached to the charger
Now it's at 13%, i'll plug it in the next 10 minutes, then i'll see what will happen this time. Very strange indeed.. I'm only a little bit scared about the "red led death" i read about here and there over the internet.
Sent from my Nexus 4 using xda premium

I never turn mine off. I charge it all night every night when I sleep. Stays on.
Send it back? Rma?

as above i charge my device every night, its never powered off,. is the device hot while charging not like usual warm temp, but very hot that the device detects an issue?
the battery stats are wiped each time its charged, i guess you have some internal failure, battery not being detected after you disconnect from mains or reported as flat, faulty, unreliable source
its best not to fully discharge the battery but maybe you should use it till it powers off then recharge, any charger is fine, but you dont need anything higher than 1amp
i would return it, would suck to have an issue away from home.

[Q] Nexus 7 (2012) battery issue

Hi, I bought N7 (2012) 16 GB in December 2013 and suddenly it's charging went slow. At times, it just charges 5% after plugging in for 5-6 hours. I've no idea what's happening with it. Any clue?

Same here.
E.g. last night I turned it off at appr. 30%, plugged in the charger and in den morning it was at about 50%.
I am on PACman Rom 22.1.0

there has many issues about fast battery drain after kitkat especially about N7. There is no definite fix for this but you can try not to let it decharge under %30-35 because the lower battery is the longer it charges.. good luck with pluging and unpluging the charger a few times in out in out , it helps they said.

hagizma said:
there has many issues about fast battery drain after kitkat especially about N7. There is no definite fix for this but you can try not to let it decharge under %30-35 because the lower battery is the longer it charges.. good luck with pluging and unpluging the charger a few times in out in out , it helps they said.
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No, my case is something else. Everything was working fine and this problem happened suddenly one day. At times, while charger is plugged in, if I play game, battery starts to drain even when it's charging. There has to be some problem with the battery but I ask why did this happen and that too suddenly.

Get gsam from play store and see what's eating your battery. Or post screens here.
If you're rooted, you need gsam root companion as well. Shows more details then.
Otherwise we're all just guessing.

Mine started doing that just yesterday. I updated twrp today and did a wipe of everything, went to reboot, now it will not turn on at all. Won't even charge. I got it to turn on finally but it won't go back into recovery. Just gets stuck on the part when you first turn it on.
Sent from my SM-N900P using Tapatalk

Here's something crazy! I unplugged the battery for a few hours, plugged in the power cable, tried turning it on (didn't work for obvious reasons lol), then plugged the battery pack in. Now it's charging fine and was able to boot into recovery.
Sent from my SM-N900P using Tapatalk

[Q] Is my phone dead?

I recently was on my phone texting and I set it down for about 2 hours and came back to it and it was off. So I thought, well thats strange and so I tried to turn it back on and nothing happened. So I took battery out and put it back in and it came on for 1 second then off, every time i took battery out and repeated. So I held power down for about a min w out battery, nothing...tried recovery, still turned off. Tried different battery, nothing. So Im sorta confused idk what is causing this...is it like dead? Can I fix it?

Interested to hear of anyone else has had this problem. 4 batteries and all showing over 90% in CWM, which does stay up when I bring it up. Have you got into your recovery and does it start on okay for that @Rocklee99

Teknician said:
Interested to hear of anyone else has had this problem. 4 batteries and all showing over 90% in CWM, which does stay up when I bring it up. Have you got into your recovery and does it start on okay for that @Rocklee99
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Click to collapse
I cant get into recovery or download mode, itll shut down before it reaches their screens

I ended up getting rid of my China batteries. The external charger (purchased off of eBay with 3 batteries) would show the battery fully charged, even in reality, I'm guessing it was only partially charged. After so many times of "partially" charging and then discharging in the phone, I'm betting that the battery was more like 20% but showing fully charged. Confusing but these batteries do have a memory and if the wall charger is only charging to 20% capacity and shutting down the charge circuit, thinking is at 100%, after a few times of that, that's all these batteries will charge up to. Bad batteries, because new batteries were just fine with a new wall charger.

battery recharging not working on rooted device

i was used to try for hours to get my phone back to life after it shut down due to poor battery level, but now while it was fine the battery heated a lot and the phone powered off and after one day of tries i have still not succeeded to get it back on. when I plug it to the charger the device powers on and after some time it shows only the big red battery gauge, 1%. then sometimes it reaches 2% and after some time the part of the phone above the battery gets much hotter, though not as hot as the battery did earlier, and the gauge falls to 1%. I tried to keep it plugged for one or two hours and it shows only 1%. Actually it seems that the phone is configured to power on automatically as soon as it is plugged to an external power source. Li-ion batteries normally need to be recharged at very low rate when they're at very low level, though this is a dangerous case, so if the phone keeps powering on, the charging current might not be enough to over-compensate the drain.
I'm asking here because i'm wondering whether rooting the phone has anything to do in it, and if there's a special combo that could disable the phone from keeping powering it on every time it is connected to an external power source. I'm currently searching a way to get the battery recharged with an external charger.

heavytull said:
i was used to try for hours to get my phone back to life after it shut down due to poor battery level, but now while it was fine the battery heated a lot and the phone powered off and after one day of tries i have still not succeeded to get it back on. when I plug it to the charger the device powers on and after some time it shows only the big red battery gauge, 1%. then sometimes it reaches 2% and after some time the part of the phone above the battery gets much hotter, though not as hot as the battery did earlier, and the gauge falls to 1%. I tried to keep it plugged for one or two hours and it shows only 1%. Actually it seems that the phone is configured to power on automatically as soon as it is plugged to an external power source. Li-ion batteries normally need to be recharged at very low rate when they're at very low level, though this is a dangerous case, so if the phone keeps powering on, the charging current might not be enough to over-compensate the drain.
I'm asking here because i'm wondering whether rooting the phone has anything to do in it, and if there's a special combo that could disable the phone from keeping powering it on every time it is connected to an external power source. I'm currently searching a way to get the battery recharged with an external charger.
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The battery is shot, get a replacement
Sent from my LG-H910 using XDA Labs

cnjax said:
The battery is shot, get a replacement
Sent from my LG-H910 using XDA Labs
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are you sure?